DC Shunt Motor is linked across the AC Supply - Electronic Engineering
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DC Motor Questions · 1. What will happen if the DC shunt motor is linked across the AC supply? What is the Principle of Motor? AC-DC Motors Electrical Interview Questions · What are the Types of DC Generators? AC-DC Motors Electrical.
- The motor will stop
- The motor will continue to run
- The armature may burn
- The motor will run noisy
Question 1: What will happen if the back EMF of a DC motor vanishes suddenly?
Answers: The armature may burn
- colliery winders
- centrifugal pumps
- elevators
- steel rolling mills
Question 2: Usually wide and sensitive speed control is desired in case of ?
Answers: colliery winders
- Blowers
- Centrifugal pumps
- Air compressors
- Conveyors
Question 3: Which of the following load normally, needs starting torque more than. The rated torque?
Answers: Conveyors
- no load
- intermittent Load
- continuous full load
- continuous part load
Question 4: A motor for punching machine is usually subjected to?
Answers: intermittent Load
- self-induced EMF
- mutually induced EMF
- back EMF
- none of the above
Question 5: When the armature of a DC motor rotates, EMF induced is?
Answers: back EMF
- Differentially compounded motor
- Cumulatively compounded motor
- Shunt motor
- Series motor
Question 6: Which motor has the poorest speed control ?
Answers: Series motor
- 100%
- less than 50%
- around 99%
- anywhere between 75% and 90%
Question 7: ln case-the conditions for maximum power for a DC motor I are established, the efficiency of the motor will be?
Answers: less than 50%
- a highly resistive circuit
- none of the above
- a low resistance circuit
- a capacitive circuit
Question 8: At the instant of starting when a DC motor is put on supply, it behaves like?
Answers: a low resistance circuit
- any of the above
- field current
- applied voltage
- resistance in series with armature
Question 9: The speed of a DC motor can be varied by varying?
Answers: any of the above
- over load relay and no volt relay are both connected in parallel with the load
- over load relay and no volt relay are both connected in series with the load
- over load relay is connected in parallel and no volt relay in series with the load
- over load relay is connected in series and no volt relay in parallel with the load
Question 10: In a manual shunt motor starter?
Answers: over load relay is connected in series and no volt relay in parallel with the load
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Correct: 0 Wrong: 0
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