Electrical Machines DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by starters commutator armature winding field winding starters commutator armature winding field winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, 1. reactance voltage is proportional to armature current 2.reactance voltage is proportional to core length 3.reactance voltage is due to self-flux of the coil undergoing commutation 4. armature-cross flux is neutralized by interpolar flux 5. interpolarmmf is more than armature mmf in the interpolar zone From these, the correct answer is 1, 3, 5 1, 2, 5 2, 3, 4 1, 2, 3, 4 1, 3, 5 1, 2, 5 2, 3, 4 1, 2, 3, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be zero. about 100 V. 250 V. very small, say about 2 or 3 V. zero. about 100 V. 250 V. very small, say about 2 or 3 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Regenerative braking is not found in which motor? Induction motor. DC series. DC shunt. DC compound. Induction motor. DC series. DC shunt. DC compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tertiary winding in a transformer is mostly zig - zag delta connected. star connected. zig - zag star connected. delta connected. zig - zag delta connected. star connected. zig - zag star connected. delta connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 120°. 30°. 90°. 60°. 120°. 30°. 90°. 60°. ANSWER DOWNLOAD EXAMIANS APP
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