Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor increases. remains same. None of these decreases. increases. remains same. None of these decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The functions of inter poles are both 1 and 2 reduce cross magnetization effect and improve commutation None of these nullify reactance voltage and improve the commutation. both 1 and 2 reduce cross magnetization effect and improve commutation None of these nullify reactance voltage and improve the commutation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principal of starting of 3 - Φ IM is similar to transformer with short-circuited secondary. capacitor run IM. synchronous motor. repulsion motor type starting. transformer with short-circuited secondary. capacitor run IM. synchronous motor. repulsion motor type starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is 8.9%. 14%. 7%. 0%. 8.9%. 14%. 7%. 0%. 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 2.7 mWb. 1.4 mWb. 1.2 mWb. 3.5 mWb. 2.7 mWb. 1.4 mWb. 1.2 mWb. 3.5 mWb. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For small value armature current Ia the torque developed by a DC series motor is proportional to 1/Ia. √Ia. Ia. Ia2. 1/Ia. √Ia. Ia. Ia2. ANSWER DOWNLOAD EXAMIANS APP
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