Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? S 1-S 1/S 1/(1-S) S 1-S 1/S 1/(1-S) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a three phase induction motor has an impedance of 0.4 + j4 ohm per phase at standstill the maximum torque occurs at a slip of _____________. 25 %. 50 %. 10 %. 15 %. 25 %. 50 %. 10 %. 15 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for increasing efficiency. mechanical balancing. All of these reducing armature reaction. increasing efficiency. mechanical balancing. All of these reducing armature reaction. 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 fault. line to line fault. line to ground fault. 3 - phase to ground fault. 3 - phase fault. line to line fault. line to ground fault. 3 - phase to ground fault. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Speed of DC motor can be controlled by varying applied voltage. its flux oer pole. all of these. resistance of armature culture. applied voltage. its flux oer pole. all of these. resistance of armature culture. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a polyphase induction motor helps to increase the starting torque. reduce the magnetizing current. reduce the chance of cogging. reduce the chance of crawling. increase the starting torque. reduce the magnetizing current. reduce the chance of cogging. reduce the chance of crawling. ANSWER DOWNLOAD EXAMIANS APP
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