Electric Drives Questions and Answers
Q1.
The field diverter resistance for a DC series motor is kept _____
Answer :
Low
Q2.
Instantaneous power in the 3-φ system is constant.
Answer :
True
Q3.
Full form of DTC.
Answer :
Direct torque control
Q4.
Hooke’s law is applicable within the elastic limit.
Answer :
True
Q5.
Full form of SPWM.
Answer :
Sinusoidal pulse width modulation
Q6.
The unit of the moment of inertia is Joule.
Answer :
False
Q7.
Which starting method is the worst method in Induction motor?
Answer :
Reactance starting
Q8.
Which motor is preferred for overhead traveling cranes?
Answer :
Intermittent periodic motor
Q9.
Insufficient rating of the machine can damage the windings.
Answer :
True
Q10.
Full form of THD is _____
Answer :
Total harmonic distortion
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