Electrical Machines In travelling cranes for crane travel, trolley and boom hoist which motor is preferred? Stepper motor. DC differential compound motor. Slip ring induction motor. Synchronous motor. Stepper motor. DC differential compound motor. Slip ring induction motor. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increase the maintenance and repair increase the iron loss All of these increases the design cost increase the maintenance and repair increase the iron loss All of these increases the design cost ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip speed is the half of the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. sum of synchronous and rotor speeds. half of the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. sum of synchronous and rotor speeds. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has maximum speed? 6 pole. 4 pole. 8 pole. 2 pole. 6 pole. 4 pole. 8 pole. 2 pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard system for controlling the speed of a DC motor is used where 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. The speed in both the direction is required. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC shunt generator having a wave winding supplies 50 lamps, each of 60 W at 120 V. The armature and field resistance are 0.2 Ω and 60 Ω respectively. The current in each armature conductor is 13.5 A. 27 A. 23 A. 11.5 A. 13.5 A. 27 A. 23 A. 11.5 A. ANSWER DOWNLOAD EXAMIANS APP
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