Electrical Machines The overall power factor of an on load transformer is always lagging. is always unity. depends on the power factor of the load. is always leading. is always lagging. is always unity. depends on the power factor of the load. is always leading. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction depends on which of the following? magnitude of load current power factor of load None of these both 1 and 2 magnitude of load current power factor of load None of these both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If Ke is eddy current constant, Kf is form factor, f is supply frequency, Bm maximum flux density in core of transformer, the expression of eddy current loss in transformer, is given by Kef2KfBm2. KefKf2Bm2. Kef2Kf2Bm2. Kef2Kf2Bm. Kef2KfBm2. KefKf2Bm2. Kef2Kf2Bm2. Kef2Kf2Bm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 230 V. 210 V 150 V. 240 V. 230 V. 210 V 150 V. 240 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator, voltage drops occurs in armature resistance and leakage reactance. armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. armature resistance, leakage reactance and armature reaction. armature resistance and leakage reactance. armature resistance only. armature resistance, leakage reactance, armature reaction and earth connection. armature resistance, leakage reactance and armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is 16. 32. 4. 8. 16. 32. 4. 8. ANSWER DOWNLOAD EXAMIANS APP
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