Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their percentage impedances are equal polarities are properly connected KVA ratings are equal turn- ratios are exactly equal percentage impedances are equal polarities are properly connected KVA ratings are equal turn- ratios are exactly equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has more stability salient pole motor None of these both motors has same stability cylindrical motor salient pole motor None of these both motors has same stability cylindrical motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, for the same value of Æ, Z and N; which one of the following statements is correct? Armature emf is less with wave winding than with lap winding. Armature emf is same as long as the flux density in the air gap remains the same. Armature emf depends on weather the machine is running as a motor or generator. Armature emf is more with wave winding than with lap winding. Armature emf is less with wave winding than with lap winding. Armature emf is same as long as the flux density in the air gap remains the same. Armature emf depends on weather the machine is running as a motor or generator. Armature emf is more with wave winding than with lap winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is minimized by laminating the core of a transformer? Stray loss. Copper loss. Eddy current loss. Hysteresis loss. Stray loss. Copper loss. Eddy current loss. Hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for hoisting and lowering which type of motor is preferred? DC series motor. AC slip ring motor. Single phase induction motor. Synchronous motor. DC series motor. AC slip ring motor. Single phase induction motor. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The 3 - Φ induction motor with rotor circuit open will make noise. not run. get over heated. run normally. make noise. not run. get over heated. run normally. ANSWER DOWNLOAD EXAMIANS APP
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