DC Motors Small dc motors up to 5 HP usually have 2 poles 8 poles 6 poles 4 poles 2 poles 8 poles 6 poles 4 poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors The variable resistor shunting the field of a dc series motor is called a Voltage regulator Field divertor Potential divider Armature divertor Voltage regulator Field divertor Potential divider Armature divertor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The value of back emf in dc motor is maximum at Full load None of the listed here Half full load No load Full load None of the listed here Half full load No load ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following losses are significantly reduced by laminating the core of a D.C. generator? Hysteresis losses Eddy current losses Copper losses Windage losses Hysteresis losses Eddy current losses Copper losses Windage losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors Ward-Leonard control is basically a Voltage control method Field control method Armature resistance control method Field divertor method Voltage control method Field control method Armature resistance control method Field divertor method ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Open armature coil Too much brush tension Worn bearings Bent shaft Open armature coil Too much brush tension Worn bearings Bent shaft ANSWER DOWNLOAD EXAMIANS APP
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