(a)
The graph of
(a)
Answer to Problem 44PQ
Plot for the induced emf in coil
Plot for the induced emf in coil 2 is shown below.
Plot for induced emf in coil
Explanation of Solution
As it is known that a three phase generator has
Therefore, a phase a difference of
Write the expression to calculate the induced emf in the coil.
Here,
Write the expression to calculate the peak value of emf.
Here,
Write the expression for the angular frequency.
Here,
Let the coil
Substitute
Write the Equation for the emf of coil
Convert degree in to radian
Write the expression for induced emf in coil
Substitute
Convert degree in to radian
Write the expression for induced emf in coil
Substitute
Calculate the peak emf
Substitute
Conclusion:
Calculate the angular frequency.
Substitute
Calculate the equation of emf for coil
Substitute
Calculate the equation of emf for coil
Substitute
Calculate the equation of emf for coil
Substitute
Draw the table to plot the graph at different time interval.
Plot for the induced emf in coil
Plot for the induced emf in coil 2 is shown below.
Plot for induced emf in coil
(b)
The ways in which a three phase generator is better than a one phase generator.
(b)
Answer to Problem 44PQ
The three phase generator has higher efficiency and higher power factor compared to a one phase generator which is its major advantage over one phase generator.
Explanation of Solution
The advantage of three phase generator over a one phase generator are as follows.
- 1. The power output of a three phase generator is constant whereas the power generated by a one phase generator is pulsating that it is not constant and behaves in an alternating manner.
- 2. The three phase generator has higher power factor as compared to one phase generator.
- 3. The three phase generator has much higher efficiency as compared to the one phase motor.
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Chapter 32 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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