The ratio of starting torque to full-load torque is least in case of
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A three point starter is considered suitable for
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In which of the following applications D.C. series motor is invariably tried?
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The current drawn by the armature of D.C. motor is directly proportional to
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In D.C. machines fractional pitch winding is used
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By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?
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In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be
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These days D.C. motors are widely used in
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In case of D.C. shunt motors the speed is dependent on back e.m.f. only because
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A direct on line starter is used: for starting motors
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To get the speed of D.C, motor below the normal without wastage of electrical energy is used
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What will happen if the back e.m.f. of a D.C. motor vanishes suddenly?
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