Electrical Machines A series motor is efficiently suitable for constant speed operation. low starting torque operation. none of these. high starting torque operation. constant speed operation. low starting torque operation. none of these. high starting torque operation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ratio of starting torque to full load torque is minimum in Differential compound motor. Series motor. Cumulative compound motor. Shunt motor. Differential compound motor. Series motor. Cumulative compound motor. Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively? 1600 W and 5000 W 3200 W and 2500 W 1600 W and 1250 W 3200 W and 5200 W 1600 W and 5000 W 3200 W and 2500 W 1600 W and 1250 W 3200 W and 5200 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 0.87 1.06 0.96 0.95 0.87 1.06 0.96 0.95 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main purpose of providing tertiary winding in a three phase transformer is None of these to interconnect three voltage systems. to carry extra load. to suppress harmonic and unbalance in voltage. None of these to interconnect three voltage systems. to carry extra load. to suppress harmonic and unbalance in voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following pairs is/are correct? closed slot----- leakage flux is high semi closed slot-----leakage flux is moderate open slot----- leakage flux is less All of these closed slot----- leakage flux is high semi closed slot-----leakage flux is moderate open slot----- leakage flux is less All of these ANSWER DOWNLOAD EXAMIANS APP
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