Electrical Machines The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is 1, 4 2, 3 1, 3 2, 4 1, 4 2, 3 1, 3 2, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is 0.16 pu. 0.02 pu. 0.08 pu. 0.01 pu. 0.16 pu. 0.02 pu. 0.08 pu. 0.01 pu. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ratio of starting torque to full load torque is minimum in Differential compound motor. Shunt motor. Series motor. Cumulative compound motor. Differential compound motor. Shunt motor. Series motor. Cumulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The condition for maximum running torque is 0.707 lagging R = S.X zero 0.5 lagging unity 0.707 lagging R = S.X zero 0.5 lagging unity ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Shunt Motor having armature resistance of 0.5 Ω and 2A armature current at no-load, when the armature current is changed to 20A at loaded condition the speed is 1000 r.p.m. What is the speed at no-load? 963.8 r.p.m. 4575.4 r.p.m. 1130 r.p.m. 1037.5 r.p.m. 963.8 r.p.m. 4575.4 r.p.m. 1130 r.p.m. 1037.5 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the full form of MNP? Magnetic neutral plane. Magnetic field neutral pole. Magnetic field neutral plane. Magnetic neutral pole. Magnetic neutral plane. Magnetic field neutral pole. Magnetic field neutral plane. Magnetic neutral pole. ANSWER DOWNLOAD EXAMIANS APP
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