Electrical Machines In a Dc generator the magnetic neutral axis coincide with geometrical neutral axis, when there is no load on the generator. the generator runs on overload. the generator runs on designed speed. the generator runs on full load. there is no load on the generator. the generator runs on overload. the generator runs on designed speed. the generator runs on full load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to reduce chance of crawling. increase starting torque. reduce chance of cogging. reduce magnetizing current. reduce chance of crawling. increase starting torque. reduce chance of cogging. reduce magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The self induced emf in the coil undergoing commutation is called the dynamically induced voltage. None of these reactance voltage. statically induced voltage. dynamically induced voltage. None of these reactance voltage. statically induced voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following factors improve commutation in a dc machine ? 1. High contact resistance of brushes 2. High inductance of the coils undergoing commutation 3. Shifting of brushes in the direction of rotation for a generator and in the opposite direction For a motor 4. Narrow width for the commutation bars Select the correct answer using the codes given below : Codes : 2, 3 and 4 1, 2 and 4 1, 2, and 3 1 and 3 2, 3 and 4 1, 2 and 4 1, 2, and 3 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A triangular mmf wave is produced in the air gap of an electric machine. Such wave is produced by stator of a dc machine. stator of a induction machine. rotor of a dc machine. rotor of an synchronous machine. stator of a dc machine. stator of a induction machine. rotor of a dc machine. rotor of an synchronous machine. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type motors are preferred for lathes? Squirrel Cage induction motor. DC shunt motors. Either A or B. Synchronous motor. Squirrel Cage induction motor. DC shunt motors. Either A or B. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
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