Electrical Machines In DC generators, the cause of rapid brush wear may be imperfect contact. severe sparking. any of above. rough commutator surface. imperfect contact. severe sparking. any of above. rough commutator surface. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? Low short circuit current High voltage regulation Good voltage regulation None of these Low short circuit current High voltage regulation Good voltage regulation None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, hysteresis and eddy current losses depend upon both 2 and 3 maximum flux density load current supply frequency both 2 and 3 maximum flux density load current supply frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept air gap does not matter. as wide as possible. as small as possible. depends on the material of stator and the rotor. air gap does not matter. as wide as possible. as small as possible. depends on the material of stator and the rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? None of them. Shunt. Series. Compound. None of them. Shunt. Series. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor has which of the following characteristics? Can be started easily without load. Has a poor torque. Has its field winding consinting of thick wire and less no of turns. Has a almost constant speed. Can be started easily without load. Has a poor torque. Has its field winding consinting of thick wire and less no of turns. Has a almost constant speed. ANSWER DOWNLOAD EXAMIANS APP
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