DC Motors Small dc motors up to 5 HP usually have 8 poles 6 poles 2 poles 4 poles 8 poles 6 poles 2 poles 4 poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Transistor Thyristor Thermistor Thyratron Transistor Thyristor Thermistor Thyratron ANSWER DOWNLOAD EXAMIANS APP
DC Motors By flux control method of speed control of a dc shunt motor, we can obtain speeds. Below the normal speed only Above as well as below the normal speed Above the normal speed only None of the listed here Below the normal speed only Above as well as below the normal speed Above the normal speed only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 2.0 0.5 4.0 1.0 2.0 0.5 4.0 1.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the speed of a dc shunt motor is increased the back emf of the motor will Increase Decrease Become zero Remains same Increase Decrease Become zero Remains same ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following losses are significantly reduced by laminating the core of a D.C. generator? Copper losses Eddy current losses Hysteresis losses Windage losses Copper losses Eddy current losses Hysteresis losses Windage losses ANSWER DOWNLOAD EXAMIANS APP
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