Electrical Machines When a transformer is loaded, the secondary terminal voltage drops. That means power factor is unity. lagging. zero. leading. unity. lagging. zero. leading. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The 3 - Φ induction motor with rotor circuit open will not run. get over heated. make noise. run normally. not run. get over heated. make noise. run normally. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit test on transformer gives hysteresis loss copper loss both 1and 2 eddy current loss hysteresis loss copper loss both 1and 2 eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor torque or load angle δ ------------- with increase in load remains unaffected decreases None of these increases remains unaffected decreases None of these increases 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. Ia2. Ia. √Ia. 1/Ia. Ia2. Ia. √Ia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is N1 : N2. none. N12 : N22. 1 : 1. N1 : N2. none. N12 : N22. 1 : 1. ANSWER DOWNLOAD EXAMIANS APP
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