Electric Drives Questions and Answers, Set 7

Electric Drives Questions and Answers

Q1. 

The axis along which no emf is produced in the armature conductors is called as ___

Answer :

Magnetic Neutral Axis (MNA)

Q2. 

Load torque of the crane is independent of ______

Answer :

Speed

Q3. 

A Buck-Boost converter is used to _____

Answer :

Step up and step down the voltage

Q4. 

If the starting torque of the motor is less than the load torque, the motor will fail to start.

Answer :

True

Q5. 

Boost converter is used to _______

Answer :

Step up the voltage

Q6. 

What is the relationship between torque and speed in constant type loads?

Answer :

Torque is independent of speed

Q7. 

What is the condition for the steady-state operation of the motor?

Answer :

Load torque = Motor torque

Q8. 

In a synchronous machine, the phase sequence can be reversed by reversing the ____

Answer :

Rotor direction

Q9. 

Turn-on and turn-off times of transistor depend on _________

Answer :

Junction Capacitance

Q10. 

Which of the following device is NOT suitable for parallel operation?

Answer :

BJT

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