Electrical Machines In salient pole synchronous machine, the reluctance power varies as sin2δ cos2δ sinδ cosδ sin2δ cos2δ sinδ cosδ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of None of these permanent magnets. residual magnetism. armature reaction. None of these permanent magnets. residual magnetism. armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss increase. remains constant. None of these decrease. increase. remains constant. None of these decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be 1.4 mWb. 3.5 mWb. 1.2 mWb. 2.7 mWb. 1.4 mWb. 3.5 mWb. 1.2 mWb. 2.7 mWb. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be 6% and -4% 3.2% and -1.6% 4.8% and -3.2% None of these 6% and -4% 3.2% and -1.6% 4.8% and -3.2% None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In double cage induction motor, the inner cage offers high resistance and low reactance. low resistance and high reactance. high resistance and high reactance. low resistance and low reactance. high resistance and low reactance. low resistance and high reactance. high resistance and high reactance. low resistance and low reactance. ANSWER DOWNLOAD EXAMIANS APP
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