Electrical Machines Iron losses in a DC machine are independent of variation in speed and voltage. load. voltage. speed. speed and voltage. load. voltage. speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is minimum maximum All of these zero minimum maximum All of these zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Ph will increase but Pe will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Pe will increase but Ph will decrease Ph will increase but Pe will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Pe will increase but Ph will decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine yoke offers mechanical protection to the machine both A and B produce working flux flux path completion mechanical protection to the machine both A and B produce working flux flux path completion ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? flux(φ) None of these both A and B armature current(Ia) flux(φ) None of these both A and B armature current(Ia) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is 44 A. 400 A. 40 A. 440 A. 44 A. 400 A. 40 A. 440 A. ANSWER DOWNLOAD EXAMIANS APP
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