Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss None of these decrease. remains constant. increase. None of these decrease. remains constant. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard system, the lower limit of the speed imposed by Residual magnetism of the generator. None of above. Field resistance. Armature resistance. Residual magnetism of the generator. None of above. Field resistance. Armature resistance. 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 0.08 pu. 0.16 pu. 0.02 pu. 0.01 pu. 0.08 pu. 0.16 pu. 0.02 pu. 0.01 pu. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotives which of the following motor are used ? DC Shunt motor. DC series motor. Synchronous motor. DC compound motor. DC Shunt motor. DC series motor. Synchronous motor. DC compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 2 pole, 12 slot synchronous machine is operating at synchronous speed. Find the slot angle? 60° 20° 30° 18° 60° 20° 30° 18° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 10 ohm 100 ohm 2 ohm. 0.2 ohm 10 ohm 100 ohm 2 ohm. 0.2 ohm ANSWER DOWNLOAD EXAMIANS APP
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