Regenerative method of braking is based on that
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In Ward-Leonard control the lower limit of speed is imposed by
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Ward-Leonard control is basically a
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Which motor should not be started on no-load ?
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For constant torque drive which speed control method is preferred ?
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Which of the following motors is usually used in house-hold refrigerators ?
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Which of the following motors is most suitable for signalling devices and many kinds of timers ?
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Why are the D.C. motors preferred for traction applications ?
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Which of the following motors one will choose to drive the rotary compressor ?
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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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If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking
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The armature voltage control of D.C. motor provides
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