Electrical Machines A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is 4. 32. 8. 16. 4. 32. 8. 16. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator rotates at 1500 rpm. How many times in a second, will the emf induced in each armature conductor changes its direction? 500. 750. 100. 200. 500. 750. 100. 200. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The condition for maximum running torque is zero 0.707 lagging 0.5 lagging unity R = S.X zero 0.707 lagging 0.5 lagging unity R = S.X ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1-S 1/(1-S) S 1/S 1-S 1/(1-S) S 1/S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of generated emf in the armature coil of a DC machine is 1. the same as that of the current in a generator 2. the same as that of the current in a motor 3. opposite to that of the current in a generator 4. opposite to that of the current in a motor From these, the correct answer is 2, 3 2, 4 1, 4 1, 3 2, 3 2, 4 1, 4 1, 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutators in DC machines have a role of which converts AC to DC. none of these. Both AC to DC and DC to AC. high voltage DC to low voltage DC. AC to DC. none of these. Both AC to DC and DC to AC. high voltage DC to low voltage DC. ANSWER DOWNLOAD EXAMIANS APP
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