Electrical Engineering Questions And Answers :: Dc Motors: part4

Electrical Engineering : Dc Motors QUESTIONS AND ANSWERS :: part4 : 11 to 15

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.Ward-Leonard control is basically a

voltage control method
field divertor method
field control method
armature resistance control method

12.Which of the following motors one will choose to drive the rotary compressor ?

D.C. shunt motor
D.C. series motor
Universal motor
Synchronous motor

13.Which of the following steps is likely to result in reduction of hysteresis loss in a D.C. generator ?

Providing laminations in armature core
Providing laminations in stator
Using non-magnetic material for frame
Using material of low hysteresis co-efficient for armature core material

14.Which of the following loss in a D.C. generator is dissipated in the form of heat?

Mechanical loss
Core loss
Copper loss
All of the above

15.In a D.C. generator all of the following could be the effects of iron losses except

Loss of efficiency
Excessive heating of core
Increase in terminal voltage
Rise in temperature of ventilating air

More Dc Motors QUESTIONS AND ANSWERS available in next pages

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