Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor remains same. None of these increases. decreases. remains same. None of these increases. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The damper windings also called the squirrel cage windings or damper grids are provided on the stator for improving power factor. are provided in a synchronous motor to make it self starting. consists of short-circuited copper bars embedded in the field pole faces. both (A) and (B). are provided on the stator for improving power factor. are provided in a synchronous motor to make it self starting. consists of short-circuited copper bars embedded in the field pole faces. both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power of any electrical motor is taken from the Armature. Coupling mounted on the shaft. Motor frame. Field. Armature. Coupling mounted on the shaft. Motor frame. Field. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of low resistivity. high viscosity. low BDV. low viscosity. low resistivity. high viscosity. low BDV. low viscosity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 2. 8. 4. 6. 2. 8. 4. 6. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 40 volts. 10 volts. 20 volts. 30 volts. 40 volts. 10 volts. 20 volts. 30 volts. ANSWER DOWNLOAD EXAMIANS APP
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