Which D.C. motor will be preferred for machine tools?
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Electrical Engineering · all questionsD.C. Motors
D.C. Motors
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The speed of a D.C. series motor is
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The plugging gives the
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When two D.C. series motors are connected in parallel, the resultant speed is
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Which of the following motors one will choose to drive the rotary compressor?
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In case the back e.m.f. and the speed of a D.C. motor are doubled, the torque developed by the motor will
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Which of the following motors is usually used in household refrigerators?
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Which D.C. motor is preferred for elevators?
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During rheostatic braking of D.C. series motors
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In a D.C. generator all of the following could be the effects of iron losses except
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If the speed of a D.C. shunt motor is increased, the back e.m.f. of the motor will
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In a differentially compounded D.C. motor, if shunt field suddenly opens
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Speed control by Ward Leonard method gives uniform speed variation
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For which types of D.C. motor, dynamic braking is generally used?
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Which D.C. motor will be suitable along with flywheel for intermittent light and heavy loads?
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The type of D.C. motor used for shears and punches is
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Buses, trains, trolleys, hoists, cranes require high starting torque and therefore make use of
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The purpose of retardation test on D.C. shunt machines is to find out
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In a D.C. shunt motor, speed is
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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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