6. Whether the value of synchronous impedance (Zs) is constant? State the conditions on which it depends? 7 Why tbe saturation under short circuit conditions is louv?

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6. Whether the value of synchronous impedance (Zs) is constant? State
the conditions on which it depends?
7. Why the saturation under short circuit conditions is low?
8. Draw the labeled vector diagram for lagging power factor load.
9. Why the regulation is negative in case of leading power factor load?
10. Draw the nature of voltage characteristic of an alternator for a load at
lagging, leading; and unity power factors.
11. Plot the graph between open circuit voltage and short circuit current
against field current.
12.What happen if the speed of dc motor is not constant throughout the
experiment?
13. What are the other methods for regulation calculation?
Transcribed Image Text:6. Whether the value of synchronous impedance (Zs) is constant? State the conditions on which it depends? 7. Why the saturation under short circuit conditions is low? 8. Draw the labeled vector diagram for lagging power factor load. 9. Why the regulation is negative in case of leading power factor load? 10. Draw the nature of voltage characteristic of an alternator for a load at lagging, leading; and unity power factors. 11. Plot the graph between open circuit voltage and short circuit current against field current. 12.What happen if the speed of dc motor is not constant throughout the experiment? 13. What are the other methods for regulation calculation?
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