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 127easy
The nominal power printed on the name plate of any motor signifies the
Question 128easy
The following control method provides a constant torque drive
Question 129easy
In a dc shunt motor if the supply voltage is reduced by 15%, the following quantity will increase
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Question 130easy
During the normal operation of a series motor, if the field circuit suddenly opens,the motor
Question 131easy
In an overload dc motor, main danger arise due to
Question 132easy
The maximum permitted temperature in dc motor windings is usually
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Question 133easy
The generated emf and the current are in the opposite direction in case of
Question 134easy
In a simple magnetic relay, armature is in open position. As the armature moves to wards the yoke under the influence of magnetic force f e air-gap flux density Bg and fe very as under :
Question 135easy
Starter for a dc motor also provides protection to the motor against damage