Introduction to power regulator:
Power is generated from fossil fuels like coal and oil and once they are used, they are gone forever, i.e., they are non-renewable sources of energy. Therefore, one should use power economically and judiciously so that there is no wastage. In order to make sure that we do not waste power and use it to its maximum and optimum way, we use an electrical device called a power regulator, which automatically maintains the level of voltage throughout the power requirement. Power regulator, also called Automatic Voltage Regulator (AVR), as it checks power related problems like, leakage, line noise, brownouts, sags, surges, voltage imbalance, over voltage and other problems, that actually costs people a lot every year. It is used to reconcile one or more AC or DC voltages. In almost all power regulators, some internal reference voltage is fixed and they operate by comparing it to the actual output voltage. The difference between the two is intensified and further used to reduce the voltage error. I like to share this Escape Velocity Formula with you all through my article.
Measures of Power Regulator Quality -
The output voltage is not held constant; therefore its regulation can be measured in the following ways:
1. Line regulation or Input regulation: It is the ratio of change in output voltage to change in input voltage. It is degree at which the output voltage changes with the supply voltage.
2. Load regulation: It is the change in output voltage with a specified change in load current.
3. Quiescent Current: When no load is connected to the power regulator circuit, the Quiescent Current is generally measured as the input current and it is current drawn internally, which is not available to the load.
4. Dropout Voltage: A low drop out power regulator is so designed that it can work efficiently even when the differencing voltage between the supply voltage and the output voltage is only one volt.
Models of Different Power Regulators
The following are the different models of Automatic Power Regulators:
1. Three-Phase Power Regulator: It is a perfect model for a broad range of power quality problems in sizes from 5 to 2,000+ KV.
2. Single-Phase Power Regulator: This one is for a broad range of power quality problems in sizes from 5 to 150+ kv or even 5 to 15+ KV
3. Three-Phase Active Power Regulator for Deep Voltage Sagging: It works for reconciliation of deep voltage sags of sizes 10 to 2,000 KV.
Understanding Definition of Electromagnet Includes is always challenging for me but thanks to all math help websites to help me out.
Thursday, January 31, 2013
Measuring Speed
Introduction to measuring speed:
We all are familiar about speed.Speed is the distance covered by time.We used to tell about the speed of car (say) by how long it traveled within the unit time.
Usually miles/hr ,km/hr ,meter/sec etc.The difference between two objects traveling at different speeds is the distance covered by them within the unit time.
So ,we can tell that speed is directly proportional to the distance and it is inversely proportional to the time.
So that s=d/t
Where s is the speed ,d the distance, and t the time.
I like to share this Formula for Specific Gravity with you all through my article.
An Example for Measuring Speed
Suppose we are driving a car from new York to Boston.
Let the distance between those two are 300 km.And one took 4 hours to reach.
Now ,we can calculate the speed of the journey
Speed v=distance covered s/time taken t
So v=300/4
V=75km/hr
So the speed is the rate of change with time
But,can we tell this was the speed of the car,all the way..?
No! it will be the speed ,if the speed was same all along the way.
But there is only rare chance for it.
So we can tell what we found was the average speed of the journey.
Understanding The Electromagnetic Spectrum Includes is always challenging for me but thanks to all math help websites to help me out.
Measuring Instantaneous Speed
Instantaneous speed:
As all of us know,the speedometer of the car shows the speed at the particular time.
We can tell this speed as the instantaneous speed of the car.
To find the instantaneous speed ,we can seek the help of calculus.
The instantaneous speed of the car is the first derivative of the distance wrt time.
For this we are taking a limit of the time ,as it tends to 0
So v=lim `Delta` t -->0 `Delta` v/`Delta` t (read as delta v/ delta t)
V=ds/dt in terms of derivative.
Another way to find instantaneous speed:
We can find the speed also by the distance –time graph
The speed is the slope of the line in distance time graph.
We all are familiar about speed.Speed is the distance covered by time.We used to tell about the speed of car (say) by how long it traveled within the unit time.
Usually miles/hr ,km/hr ,meter/sec etc.The difference between two objects traveling at different speeds is the distance covered by them within the unit time.
So ,we can tell that speed is directly proportional to the distance and it is inversely proportional to the time.
So that s=d/t
Where s is the speed ,d the distance, and t the time.
I like to share this Formula for Specific Gravity with you all through my article.
An Example for Measuring Speed
Suppose we are driving a car from new York to Boston.
Let the distance between those two are 300 km.And one took 4 hours to reach.
Now ,we can calculate the speed of the journey
Speed v=distance covered s/time taken t
So v=300/4
V=75km/hr
So the speed is the rate of change with time
But,can we tell this was the speed of the car,all the way..?
No! it will be the speed ,if the speed was same all along the way.
But there is only rare chance for it.
So we can tell what we found was the average speed of the journey.
Understanding The Electromagnetic Spectrum Includes is always challenging for me but thanks to all math help websites to help me out.
Measuring Instantaneous Speed
Instantaneous speed:
As all of us know,the speedometer of the car shows the speed at the particular time.
We can tell this speed as the instantaneous speed of the car.
To find the instantaneous speed ,we can seek the help of calculus.
The instantaneous speed of the car is the first derivative of the distance wrt time.
For this we are taking a limit of the time ,as it tends to 0
So v=lim `Delta` t -->0 `Delta` v/`Delta` t (read as delta v/ delta t)
V=ds/dt in terms of derivative.
Another way to find instantaneous speed:
We can find the speed also by the distance –time graph
The speed is the slope of the line in distance time graph.
Thursday, January 24, 2013
Running High Altitude
Introduction to running in high altitude:
At high altitudes, the percentage of the oxygen in blood is reduced because at a particular height the oxygen in the atmosphere decreases. Let us discuss the effects of running at high altitudes on our body and some other information.
Advantages and Disadvantages of Running at Places of High Altitudes
As we know that, the percentage of the oxygen becomes less as compared to planes in the atmosphere of high altitudes. To overcome this problem, our kidney secretes more and more erythropoietin (a hormone) due to which our body creates more and more red blood cells. The total life time period of a red blood cell is about 90 to 120 days. Runners give the best performance as they come from the high altitudes after a long time because they contain the extra red blood cells. The best altitude is about 7000 to 8000 feet from the sea level. The long runs are doable at the high altitudes of 7000 to 8000 feet, but the less air or the thin air makes it difficult to perform the speed work. So to increase the speed work, runners often comes down to about 4000 feet once in a week to get the speed work. Generally, training at the high altitudes starts from the moderate height for the first five or six days and then gradually increase the altitude.
The problem of dehydration occurs at high altitudes so we must drink at least three liters of the fluid per day. If you go areas of low altitudes then wait here for five, six days then again go to the high altitudes. This will rearrange the blood acidity and electrolytes in the body. At high altitudes, due to the high breathing rates, sleeping disorder might occur, so it is advised to take power naps and avoid using alcohols and caffeine.
Conclusion for the Running at Higher Altitudes
To overcome the problem of lack of oxygen at high altitudes, our heart will have to do harder work for maintaining the same pace. It becomes normal after 14 to 60 days so that more and more red blood cells are produced in our body. Be alert for the lack of oxygen in our cell, else we will suffer from varied consequences.
At high altitudes, the percentage of the oxygen in blood is reduced because at a particular height the oxygen in the atmosphere decreases. Let us discuss the effects of running at high altitudes on our body and some other information.
Advantages and Disadvantages of Running at Places of High Altitudes
As we know that, the percentage of the oxygen becomes less as compared to planes in the atmosphere of high altitudes. To overcome this problem, our kidney secretes more and more erythropoietin (a hormone) due to which our body creates more and more red blood cells. The total life time period of a red blood cell is about 90 to 120 days. Runners give the best performance as they come from the high altitudes after a long time because they contain the extra red blood cells. The best altitude is about 7000 to 8000 feet from the sea level. The long runs are doable at the high altitudes of 7000 to 8000 feet, but the less air or the thin air makes it difficult to perform the speed work. So to increase the speed work, runners often comes down to about 4000 feet once in a week to get the speed work. Generally, training at the high altitudes starts from the moderate height for the first five or six days and then gradually increase the altitude.
The problem of dehydration occurs at high altitudes so we must drink at least three liters of the fluid per day. If you go areas of low altitudes then wait here for five, six days then again go to the high altitudes. This will rearrange the blood acidity and electrolytes in the body. At high altitudes, due to the high breathing rates, sleeping disorder might occur, so it is advised to take power naps and avoid using alcohols and caffeine.
Conclusion for the Running at Higher Altitudes
To overcome the problem of lack of oxygen at high altitudes, our heart will have to do harder work for maintaining the same pace. It becomes normal after 14 to 60 days so that more and more red blood cells are produced in our body. Be alert for the lack of oxygen in our cell, else we will suffer from varied consequences.
Heat of Solution Calorimeter
Introduction to heat of solution calorimeter:
Absorption or generation of heat usually occurs when two or more substances are mixed together forming a solution. At constant pressure, the change in heat during mixing is equal to the enthalpy change. Water is generally used as the solvent for the measurement of heat of solution, which depends upon the nature of the solute and the quantity of the solute in the solution. Heat of solution is calculated using a calorimeter that measures the temperature change in the water at the time of dissolution of the solute. I like to share this Heat Formula with you all through my article.
Using a Calorimeter for the Measurement of Heat of Solution
The calorimeter used for the calculation of heat of solution is constructed in such a way that there would be no exchange of heat between the surrounding environment and the calorimeter but there are exchanges of heat between the components within the calorimeter. While using a calorimeter, heat of solution is calculated by assuming that change in the solutes’ heat is equal to the change in water’s heat using the formula:
Masswater * ΔT water * specific heat water = ΔHwater
Where change in heat of the water is denoted as ΔHwater,
Mass water = change in the heat of the solute,
T water = change in the temperature of the water and
Specific heat water = 0.004184 kJ/g oC. Please express your views of this topic Dipole Magnetic Field by commenting on blog.
Procedure for the Calculation of Heat of Solution
A basic calorimeter is prepared by using thermometer, a polystyrene cup and a beaker. Different salts when dissolved in water show different changes of the heat of the solution.
Steps involved in the measurement of heat of solution:
Take 50 ml of distilled water in a beaker and place a thermometer into the beaker such that the bulb of the thermometer is immersed in the water but does not touch the bottom.
The initial temperature of the water is noted down.
Weigh 5g of any salt and mix thoroughly in the water by swirling.
Switch the timer on and record the temperature until the temperature decrease or increase ceases.
Conclusion for the Calculation of Heat of Solution
To conclude, heat of solution, is defined as the enthalpy of the solution when a solute is dissolved in water. The heat change may be endothermic or exothermic, which is measured using a calorimeter.
Absorption or generation of heat usually occurs when two or more substances are mixed together forming a solution. At constant pressure, the change in heat during mixing is equal to the enthalpy change. Water is generally used as the solvent for the measurement of heat of solution, which depends upon the nature of the solute and the quantity of the solute in the solution. Heat of solution is calculated using a calorimeter that measures the temperature change in the water at the time of dissolution of the solute. I like to share this Heat Formula with you all through my article.
Using a Calorimeter for the Measurement of Heat of Solution
The calorimeter used for the calculation of heat of solution is constructed in such a way that there would be no exchange of heat between the surrounding environment and the calorimeter but there are exchanges of heat between the components within the calorimeter. While using a calorimeter, heat of solution is calculated by assuming that change in the solutes’ heat is equal to the change in water’s heat using the formula:
Masswater * ΔT water * specific heat water = ΔHwater
Where change in heat of the water is denoted as ΔHwater,
Mass water = change in the heat of the solute,
T water = change in the temperature of the water and
Specific heat water = 0.004184 kJ/g oC. Please express your views of this topic Dipole Magnetic Field by commenting on blog.
Procedure for the Calculation of Heat of Solution
A basic calorimeter is prepared by using thermometer, a polystyrene cup and a beaker. Different salts when dissolved in water show different changes of the heat of the solution.
Steps involved in the measurement of heat of solution:
Take 50 ml of distilled water in a beaker and place a thermometer into the beaker such that the bulb of the thermometer is immersed in the water but does not touch the bottom.
The initial temperature of the water is noted down.
Weigh 5g of any salt and mix thoroughly in the water by swirling.
Switch the timer on and record the temperature until the temperature decrease or increase ceases.
Conclusion for the Calculation of Heat of Solution
To conclude, heat of solution, is defined as the enthalpy of the solution when a solute is dissolved in water. The heat change may be endothermic or exothermic, which is measured using a calorimeter.
Electric Power Generation Coal
Introduction to Electric Power Generation Coal:
The general process by which the electricity is created from different source of energies which are the in other form rather in electric form is called the electricity generation. Basically electricity generation is a process in which a form of energy is converts into the other. One of such form of energy can be easily obtained by the coal and this generation of electricity by coal implies the electric power generation coal.
Electricity is generally generated at power stations by many techniques in which the electric power generated by the coal is a major technique used in present days. Is this topic Electric Field Formula hard for you? Watch out for my coming posts.
Now a question arises i.e. How important is the coal in generating the electricity?
Actually Electric Power Generation Coal Is:
A generator is used to create electricity. This is done by spinning a magnet. Steam in high pressure that is generated by coal is blown through a turbine. Coal is usually used for the purpose since it is abundant and therefore very cheap. It is also easy to transport and it is also hassle free to store this. Therefore using coal is more economical and also easier when compared to other sources of energy. I have recently faced lot of problem while learning parallel plate capacitors, But thank to online resources of math which helped me to learn myself easily on net.
Examples on Electric Power Generation Coal:
Fig.1 Electric power generation.
If we look at the electric power generation chart we see how we have made our electricity over the last few decades. From Fig.1 one can conclude that oil and gas are also been used to make steam and they compete with coal but as they are expensive than the coal thus the coal is one of the best source of power generation. But there are several other sources such as nuclear power which are used increasingly for power generation.
The general process by which the electricity is created from different source of energies which are the in other form rather in electric form is called the electricity generation. Basically electricity generation is a process in which a form of energy is converts into the other. One of such form of energy can be easily obtained by the coal and this generation of electricity by coal implies the electric power generation coal.
Electricity is generally generated at power stations by many techniques in which the electric power generated by the coal is a major technique used in present days. Is this topic Electric Field Formula hard for you? Watch out for my coming posts.
Now a question arises i.e. How important is the coal in generating the electricity?
Actually Electric Power Generation Coal Is:
A generator is used to create electricity. This is done by spinning a magnet. Steam in high pressure that is generated by coal is blown through a turbine. Coal is usually used for the purpose since it is abundant and therefore very cheap. It is also easy to transport and it is also hassle free to store this. Therefore using coal is more economical and also easier when compared to other sources of energy. I have recently faced lot of problem while learning parallel plate capacitors, But thank to online resources of math which helped me to learn myself easily on net.
Examples on Electric Power Generation Coal:
If we look at the electric power generation chart we see how we have made our electricity over the last few decades. From Fig.1 one can conclude that oil and gas are also been used to make steam and they compete with coal but as they are expensive than the coal thus the coal is one of the best source of power generation. But there are several other sources such as nuclear power which are used increasingly for power generation.
Thursday, January 17, 2013
Resistance in Parallel Formula
There are two major ways of connecting resistances in an electric circuit. Either they can be connected in parallel, or they can be connected in series. In this article we shall see connection of resistances in parallel circuit. Understanding Examples of Gravitational Potential Energy is always challenging for me but thanks to all math help websites to help me out.
Introduction to Resistance in Parallel Formula
When we apply a potential difference between two ends of a conductor, an electric field will be set up inside the conductor and as a result current flows through the conductor. The applied potential difference is proportional to the current flowing in the conductor. If V is the potential difference applied and I is the current then V α I Or V = RI Here R is the constant of proportionality called resistance.
Resistors in Parallel Formula: Definition of Resistance
Resistance is characteristic of the material of the conductor. Resistance is given by the equation
R = V / I
Units: Volts / ampere or ohms (Ω)
The value of resistance of a conductor depends upon (a) nature of the material, (b) its dimensions (length & cross section area), (c) temperature of the conductor. At constant temperature, the resistance (R) of a wire is directly proportional to the length (L) of the wire and inversely proportional to area (A) of cross section.
R α L
and R α (1 /A)
So R α (L / A)
Or R = ρ (L / A). Here ρ is called the constant of proportionality termed as specific resistance or resistivity. Resistivity is specific property of material of the conductor which is independent of physical parameters of the conductor. Is this topic Physics Power Equation hard for you? Watch out for my coming posts.
Formula for Resistors in Parallel
When two resistors of resistance R1 & R2 are connected in parallel to the battery then the voltage across each resistor remains the same and the total current is sum of the current flowing in each branch of the circuit The Voltage across each resistor is V and the Current in the circuit is I. This current is broken as I1 & I2 in the branch circuits respectively. The total current is the sum of currents in the branch circuits. `I = I_1 + I_2`. From Ohms law the current is
`I_1 = V/ R_1` and `I_2 = V /R_2` .
If `R_e` is the total resistance offered by the circuit due to the parallel combination then `I = V /R_e` .
Substituting the current values in the above equation
` V /R_e = V/ R_1 + V/R_2 `
`=>( V /R_e ) = V [( 1/ R_1 ) + ( 1 /R_2 )] `
`=>( 1 /R_e ) = ( 1/ R_1 ) + ( 1 /R_2 ) `
`=>R_e =` `( R_1 R_2) / (R1+ R2)` This is the required equation for resistors connected in parallel.
Introduction to Resistance in Parallel Formula
When we apply a potential difference between two ends of a conductor, an electric field will be set up inside the conductor and as a result current flows through the conductor. The applied potential difference is proportional to the current flowing in the conductor. If V is the potential difference applied and I is the current then V α I Or V = RI Here R is the constant of proportionality called resistance.
Resistors in Parallel Formula: Definition of Resistance
Resistance is characteristic of the material of the conductor. Resistance is given by the equation
R = V / I
Units: Volts / ampere or ohms (Ω)
The value of resistance of a conductor depends upon (a) nature of the material, (b) its dimensions (length & cross section area), (c) temperature of the conductor. At constant temperature, the resistance (R) of a wire is directly proportional to the length (L) of the wire and inversely proportional to area (A) of cross section.
R α L
and R α (1 /A)
So R α (L / A)
Or R = ρ (L / A). Here ρ is called the constant of proportionality termed as specific resistance or resistivity. Resistivity is specific property of material of the conductor which is independent of physical parameters of the conductor. Is this topic Physics Power Equation hard for you? Watch out for my coming posts.
Formula for Resistors in Parallel
When two resistors of resistance R1 & R2 are connected in parallel to the battery then the voltage across each resistor remains the same and the total current is sum of the current flowing in each branch of the circuit The Voltage across each resistor is V and the Current in the circuit is I. This current is broken as I1 & I2 in the branch circuits respectively. The total current is the sum of currents in the branch circuits. `I = I_1 + I_2`. From Ohms law the current is
`I_1 = V/ R_1` and `I_2 = V /R_2` .
If `R_e` is the total resistance offered by the circuit due to the parallel combination then `I = V /R_e` .
Substituting the current values in the above equation
` V /R_e = V/ R_1 + V/R_2 `
`=>( V /R_e ) = V [( 1/ R_1 ) + ( 1 /R_2 )] `
`=>( 1 /R_e ) = ( 1/ R_1 ) + ( 1 /R_2 ) `
`=>R_e =` `( R_1 R_2) / (R1+ R2)` This is the required equation for resistors connected in parallel.
Power Transmission Pole
Introduction to power transmission pole:
A tall pole like structure, which is used for the transmission of the electricity, is called the transmission pole. It is also called the transmission tower or electricity pylon. In the Australia it is known as the iron man and in Canada it is called the hydro tower. Let us discuss about the transmission pole and its structure.
Power Transmission through Pole
The steel usually makes the power transmission pole and it is used to support the overhead electrical wires which transmits the electric energy from the long distances. They are used in the high voltages AC and Dc currents. Transmission poles are also used in the railway traction. The transmission poles have different shapes and different sizes. The heights of the transmission poles lie between 15 metre to 55 metre according to the need. The maximum heights of the transmission poles are about 300 metre. Transmission poles are also made by the concrete or wood.
For the extra high voltages transmission, the tower must be designed to carry three conductors or the multiple of three conductors. These types of the transmission towers are usually made by the steel lattice and the insulators used are either porcelain discs or the glass.We can use the silicon rubber also as the insulating material in the transmission pole. In some of the countries, the transmission towers which are used for the high and extra-high voltage are generally designed as to carry two or more electric circuits. It is not compulsory that all the circuits should be installed at the same time. They can install as according to the need.
Conclusion for Power Transmission Pole
In case of the transmission of the high voltage direct current, we use the poles having one conductor on each side of the pole so that there is an equal strength of the pole. Steel tubes of good strength and concrete poles are use for the high voltage transmission of AC railway traction lines. In the railway traction line there are always two electrical circuits so they have four conductors.
A tall pole like structure, which is used for the transmission of the electricity, is called the transmission pole. It is also called the transmission tower or electricity pylon. In the Australia it is known as the iron man and in Canada it is called the hydro tower. Let us discuss about the transmission pole and its structure.
Power Transmission through Pole
The steel usually makes the power transmission pole and it is used to support the overhead electrical wires which transmits the electric energy from the long distances. They are used in the high voltages AC and Dc currents. Transmission poles are also used in the railway traction. The transmission poles have different shapes and different sizes. The heights of the transmission poles lie between 15 metre to 55 metre according to the need. The maximum heights of the transmission poles are about 300 metre. Transmission poles are also made by the concrete or wood.
For the extra high voltages transmission, the tower must be designed to carry three conductors or the multiple of three conductors. These types of the transmission towers are usually made by the steel lattice and the insulators used are either porcelain discs or the glass.We can use the silicon rubber also as the insulating material in the transmission pole. In some of the countries, the transmission towers which are used for the high and extra-high voltage are generally designed as to carry two or more electric circuits. It is not compulsory that all the circuits should be installed at the same time. They can install as according to the need.
Conclusion for Power Transmission Pole
In case of the transmission of the high voltage direct current, we use the poles having one conductor on each side of the pole so that there is an equal strength of the pole. Steel tubes of good strength and concrete poles are use for the high voltage transmission of AC railway traction lines. In the railway traction line there are always two electrical circuits so they have four conductors.
Thursday, January 10, 2013
Physic Problems
Introduction to physics:
Physics is a natural science that involves the study of matter and its motion through spacetime, as well as all applicable concepts, such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the world and universe behave. (Source: From Wikipedia).
Some of the important topics in physics are electricity, magnetic field, reflection and refraction.Now, we are going to see some of the problems physics. Having problem with Ferromagnetism Definition keep reading my upcoming posts, i will try to help you.
Pysics Problems:
Example problem 1:
How much current will an electric heater connected to a 220v line draw if its resistance is 45 ohms?
Given:
Resistance R= 45 ohms
Voltage V= 220v
Current I=?
Solution:
According to ohm’s law, I=V/R
Therefore, I=220/45=4.89A
Example problem 2:
A lamp of 100 watts glows for 2 hours daily. Calculate the energy consumed in 30 days.
Given:
P=100 watt=0.1 kilowatt
T=2 hours
W=?
Solution:
The energy spent in 1 day,
W=p*t
W=0.1kW*2hours
W== 0.2 kWh
The energy spent in 30 days,
W= 0.2*30
W=60kWh
Please express your views of this topic physics distance formula by commenting on blog.
Few more Physics Problems:
Example problem 3:
If an electrical lamp lights for 2 hours drawing current of 0.4 A, calculate the amount of charge that passed through the lamp?
Given:
Current I=0.4 A
t=2hours
t=2*60*60=7200 seconds
Q=?
Solution:
Amount of charge Q= I*t
Q=0.4*7200=2.88*10^3 C.
Example problem 4:
Calculate the net resistance of resistance 10 ohms, 5 ohms and 15 ohms connected in parallel.
Given:
R1=10 ohms
R2=5 ohms
R3= 15 ohms
Solution:
The net resistance R is given as,
(1/R) = (1/R1) + (1/R2) + (1/R3)
Putting the values, we get
(1/R) = (1/R1) + (1/R2) + (1/R3)
(1/R)= (1/10) + (1/5) + (1/15)
1/R = 0.1+0.2+0.066=0.366
Therefore, R=2.73 ohms
Example problem 5:
A lamp of resistance 20 ohm is joined with a battery of 12v. Find the value of another resistance to be connected in series with the lamp in order to get the current of 0.5 A.
Given:
Voltage V=12v
Current I=0.5A
Resistance of the lamp R1=20 ohms
Another resistance R2=?
Solution:
The total resistance of the circuit
R=R1+R2
Using ohm’s law,
V=IR
R=V / I = 12 / 0.5 24 ohms
But R=R1+R2
R2= R-R1=24-20=4 ohm.
Physics is a natural science that involves the study of matter and its motion through spacetime, as well as all applicable concepts, such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the world and universe behave. (Source: From Wikipedia).
Some of the important topics in physics are electricity, magnetic field, reflection and refraction.Now, we are going to see some of the problems physics. Having problem with Ferromagnetism Definition keep reading my upcoming posts, i will try to help you.
Pysics Problems:
Example problem 1:
How much current will an electric heater connected to a 220v line draw if its resistance is 45 ohms?
Given:
Resistance R= 45 ohms
Voltage V= 220v
Current I=?
Solution:
According to ohm’s law, I=V/R
Therefore, I=220/45=4.89A
Example problem 2:
A lamp of 100 watts glows for 2 hours daily. Calculate the energy consumed in 30 days.
Given:
P=100 watt=0.1 kilowatt
T=2 hours
W=?
Solution:
The energy spent in 1 day,
W=p*t
W=0.1kW*2hours
W== 0.2 kWh
The energy spent in 30 days,
W= 0.2*30
W=60kWh
Please express your views of this topic physics distance formula by commenting on blog.
Few more Physics Problems:
Example problem 3:
If an electrical lamp lights for 2 hours drawing current of 0.4 A, calculate the amount of charge that passed through the lamp?
Given:
Current I=0.4 A
t=2hours
t=2*60*60=7200 seconds
Q=?
Solution:
Amount of charge Q= I*t
Q=0.4*7200=2.88*10^3 C.
Example problem 4:
Calculate the net resistance of resistance 10 ohms, 5 ohms and 15 ohms connected in parallel.
Given:
R1=10 ohms
R2=5 ohms
R3= 15 ohms
Solution:
The net resistance R is given as,
(1/R) = (1/R1) + (1/R2) + (1/R3)
Putting the values, we get
(1/R) = (1/R1) + (1/R2) + (1/R3)
(1/R)= (1/10) + (1/5) + (1/15)
1/R = 0.1+0.2+0.066=0.366
Therefore, R=2.73 ohms
Example problem 5:
A lamp of resistance 20 ohm is joined with a battery of 12v. Find the value of another resistance to be connected in series with the lamp in order to get the current of 0.5 A.
Given:
Voltage V=12v
Current I=0.5A
Resistance of the lamp R1=20 ohms
Another resistance R2=?
Solution:
The total resistance of the circuit
R=R1+R2
Using ohm’s law,
V=IR
R=V / I = 12 / 0.5 24 ohms
But R=R1+R2
R2= R-R1=24-20=4 ohm.
Thursday, January 3, 2013
Magnetic Energy Generator
Introduction to magnetic energy generator:
Got shocked with your previous month’s electric bill? Would you like to free yourselves from this? Then magnetic energy generator is the perfect choice for you.
Many years back people were thinking of producing energy that is very cheap and also renewable. It was a success till some extend, but now the success is completely in your own credit. Be the producer of the energy you want. That is the magnetic energy generator.
Concept of Magnetic Energy Generator
It is a device that a person can install it in his own home or at the work place and do all sorts of jobs that he is doing with a normal power source. The real working principle was demonstrated a few years back in which the device consists of a magnet which it rotates by it selves in a magnetic field and this indefinite rotation produces a large amount of energy. The rate of energy produced depends upon the number of rotations made by the magnet in a minute. Its fact that the magnet ‘never drains’ your back up.
Benefits of Magnetic Energy Generator
It is possible to use the device at home. So the device can produce the energy required for each houses. In this type of set up it does not matter what climate it is. Actually it suits all sorts of climates. There won’t be any special training to operate the generator. Once in a magnetic field it will run indefinitely. It does not matter that its bad weather condition. The device is cent percent eco-friendly. There is no byproduct formation and also there is no fuel required to operate the generator. It just needs to be in a magnetic field.
Most of the conventional energy generators are polluting agents in one way or the other. So comparing with those, the magnetic energy generator is very much safe. Also it will be so nice to see every house is its own power station; uninterrupted power station!
Got shocked with your previous month’s electric bill? Would you like to free yourselves from this? Then magnetic energy generator is the perfect choice for you.
Many years back people were thinking of producing energy that is very cheap and also renewable. It was a success till some extend, but now the success is completely in your own credit. Be the producer of the energy you want. That is the magnetic energy generator.
Concept of Magnetic Energy Generator
It is a device that a person can install it in his own home or at the work place and do all sorts of jobs that he is doing with a normal power source. The real working principle was demonstrated a few years back in which the device consists of a magnet which it rotates by it selves in a magnetic field and this indefinite rotation produces a large amount of energy. The rate of energy produced depends upon the number of rotations made by the magnet in a minute. Its fact that the magnet ‘never drains’ your back up.
Benefits of Magnetic Energy Generator
It is possible to use the device at home. So the device can produce the energy required for each houses. In this type of set up it does not matter what climate it is. Actually it suits all sorts of climates. There won’t be any special training to operate the generator. Once in a magnetic field it will run indefinitely. It does not matter that its bad weather condition. The device is cent percent eco-friendly. There is no byproduct formation and also there is no fuel required to operate the generator. It just needs to be in a magnetic field.
Most of the conventional energy generators are polluting agents in one way or the other. So comparing with those, the magnetic energy generator is very much safe. Also it will be so nice to see every house is its own power station; uninterrupted power station!
Composition of Venus
Introduction to composition of venus:
The solar system consists of nine planets. Out of the nine planets Mercury, Venus, Earth and Mars are small planets and their orbits are close to sun. These planets are called the inner planets or the terrestrial planets. The other five planets Jupiter, Saturn, Uranus, Neptune and Pluto (no longer recognized as a planet) are called the outer planets or the Jovian planets. Having problem with Velocity Formulas keep reading my upcoming posts, i will try to help you.
The Planet Venus
This planet is closer to the planet earth and is similar to the earth in many ways. For example, both of them have nearly the same mass, size and average density. Venus is considered to be the brightest planet in the sky because its clouds reflects 77 percent of the incoming sunlight back into the space (the planets don’t have light of their known their luminosity is dependent on the sun). Venus is also called the evening star. Based on the measurements made from Soviet Venera and American Pioneer probes, the surface temperature of Venus is estimated to be 462 degree Celsius which makes it the hottest planet of the solar system. Please express your views of this topic Permanent Magnet DC Motors by commenting on blog.
Comparison with Planet Earth
Venus depicts retrograde rotation which means that it spins from east to west, unlike the earth which rotates from west to east. So on Venus, the sun rises on the west and sets in the east. A solar day on Venus equals 117 terrestrial days. The surface of Venus is full of mountains, volcanoes, high plateaus etc. Its atmosphere contains about 96 percent carbon dioxide, 3 percent nitrogen, argon, traces of water, oxygen, hydrogen etc. This depicts somewhat semblance and contrast to the Earth, which is made of 79 percent of nitrogen, 20 percent oxygen, 1 percent argon, and 0.03 percent carbon dioxide and traces of other elements. The presence of oxygen is the differentiator in the planet Earth which supports life on earth unlike the planet Venus. One more stark difference lies in Earth having its satellite the moon while Venus has no satellite.
The solar system consists of nine planets. Out of the nine planets Mercury, Venus, Earth and Mars are small planets and their orbits are close to sun. These planets are called the inner planets or the terrestrial planets. The other five planets Jupiter, Saturn, Uranus, Neptune and Pluto (no longer recognized as a planet) are called the outer planets or the Jovian planets. Having problem with Velocity Formulas keep reading my upcoming posts, i will try to help you.
The Planet Venus
This planet is closer to the planet earth and is similar to the earth in many ways. For example, both of them have nearly the same mass, size and average density. Venus is considered to be the brightest planet in the sky because its clouds reflects 77 percent of the incoming sunlight back into the space (the planets don’t have light of their known their luminosity is dependent on the sun). Venus is also called the evening star. Based on the measurements made from Soviet Venera and American Pioneer probes, the surface temperature of Venus is estimated to be 462 degree Celsius which makes it the hottest planet of the solar system. Please express your views of this topic Permanent Magnet DC Motors by commenting on blog.
Comparison with Planet Earth
Venus depicts retrograde rotation which means that it spins from east to west, unlike the earth which rotates from west to east. So on Venus, the sun rises on the west and sets in the east. A solar day on Venus equals 117 terrestrial days. The surface of Venus is full of mountains, volcanoes, high plateaus etc. Its atmosphere contains about 96 percent carbon dioxide, 3 percent nitrogen, argon, traces of water, oxygen, hydrogen etc. This depicts somewhat semblance and contrast to the Earth, which is made of 79 percent of nitrogen, 20 percent oxygen, 1 percent argon, and 0.03 percent carbon dioxide and traces of other elements. The presence of oxygen is the differentiator in the planet Earth which supports life on earth unlike the planet Venus. One more stark difference lies in Earth having its satellite the moon while Venus has no satellite.
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