DC Motors MCQs
Practice free DC Motors multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 313 questions — no login required.
Question 199easy
In case the back e.m.f. and the speed of a D.C. motor are doubled, the torque developed by the motor will
Question 200easy
The speed of a D.C. motor can be varied by varying
Question 201easy
1f a D.C. motor designed for 40?C ambient temperature is to be used for 50?C ambient temperature, then the motor
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Question 202easy
If the speed of a D.C. shunt motor is increased, the back e.m.f. of the motor will
Question 203easy
Which of the following motors have almost constant speed over their full load range?
Question 204easy
Which of the following motors in usually used in house-hold refrigerators?
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Question 205easy
Which of the following motors is most suitable for signalling devices and many kinds of times?
Question 206easy
Ward-Leonard control is basically a
Question 207easy
The main dis-advantage of the Ward-Leonard control method is