Electric Drives Questions and Answers
Q1.
The most suitable device for high-frequency inversion in switching mode power supply is ____
Answer :
MOSFET
Q2.
Which one of the following methods would give a lower than the actual value of regulation of the alternator?
Answer :
MMF method
Q3.
Which one of the following methods would give a higher than the actual value of regulation of the alternator.
Answer :
EMF method
Q4.
What is the unit of displacement?
Answer :
m/s
Q5.
The V/F control is a part of the synchronous speed changing technique.
Answer :
False
Q6.
The slip recovery scheme is a part of the synchronous speed changing technique.
Answer :
True
Q7.
The most suitable control-motor application is _____
Answer :
DC separately motor
Q8.
A 3-phase induction machine draws active power P and reactive power Q from the grid. If it is operated as a generator, then P and Q will be _____
Answer :
Negative and Positive
Q9.
Mesh analysis is only applied to the planar circuits.
Answer :
True
Q10.
Which braking method is the best method for obtaining high braking torque?
Answer :
Plugging
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