Electrical Machines When two DC series motors are connected in parallel, the resultant speed is normal speed. zero. less than normal speed. more than normal speed. normal speed. zero. less than normal speed. more than normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 180. 270. 45. 30. 180. 270. 45. 30. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a fault at the terminal of a synchronous generator, the fault current is maximum for a 3 - phase to ground fault. line to line fault. line to ground fault. 3 - phase fault. 3 - phase to ground fault. line to line fault. line to ground fault. 3 - phase fault. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field of a dc shunt motor gets opened while the motor is running, then the armature will oscillate about original speed as the mean speed motor will attain dangerously high speed armature current will drop motor will become slow. armature will oscillate about original speed as the mean speed motor will attain dangerously high speed armature current will drop motor will become slow. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a seperately excited DC Motor if field current is increased, it will Increase acceleration duration. Increase speed Reduce armature heating. Reduce starting torque. Increase acceleration duration. Increase speed Reduce armature heating. Reduce starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard system for controlling the speed of a DC motor is used where The speed in both the direction is required. The accuracy in speed control is required. Very fine speed control over the whole range from zero to normal speed is required. All of above. The speed in both the direction is required. The accuracy in speed control is required. Very fine speed control over the whole range from zero to normal speed is required. All of above. ANSWER DOWNLOAD EXAMIANS APP
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