Electrical Machines Which of the following DC motors has almost constant speed over their full load range? Series. Shunt. none of these. Compound (cummolative). Series. Shunt. none of these. Compound (cummolative). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-winding single-phase motor has starting torque equal to full-load torque. zero starting torque. low starting torque. high starting torque. starting torque equal to full-load torque. zero starting torque. low starting torque. high starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? None of the options. Armature flux distorts the main field flux. Armature flux weakens the main field flux. Both option B and C. None of the options. Armature flux distorts the main field flux. Armature flux weakens the main field flux. Both option B and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing open circuit and short circuit tests. open circuit and zero power factor tests. short circuit and slip tests. zero power factor and slip tests. open circuit and short circuit tests. open circuit and zero power factor tests. short circuit and slip tests. zero power factor and slip tests. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines As compared to DOL starting, a cage induction motor with star-delta starting shall have more starting torque. reduced starting current. smoother acceleration. more starting time. more starting torque. reduced starting current. smoother acceleration. more starting time. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed depends on reactance voltage load angle both 1and 2 reactance voltage load angle both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
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