Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of None of these armature reaction. residual magnetism. permanent magnets. None of these armature reaction. residual magnetism. permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, if direct axis reactance and quadrature axis reactance is equal, then power developed due to reluctance is zero maximum infinite value any of the above zero maximum infinite value any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer maximum flux density is not constant, the eddy current loss varies as f f² V V² f f² V V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 90°. 30°. 120°. 60°. 90°. 30°. 120°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers operating in parallel will share the load depending on their per unit impedance leakage reactance ratings efficiency per unit impedance leakage reactance ratings efficiency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The use of double squirrel cage winding on the rotor provides higher efficiency. a large starting torque. reduced starting torque. low noise. higher efficiency. a large starting torque. reduced starting torque. low noise. ANSWER DOWNLOAD EXAMIANS APP
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