Electrical Machines At slip s = 1 torque developed in machine is starting torque. electromagnetic torque. none. maximum torque. starting torque. electromagnetic torque. none. maximum torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the brushes remain in contact with conductors which lie under north pole. there is no hard and fast rule for this. lie under south pole. lie in the inter polar gaps. lie under north pole. there is no hard and fast rule for this. lie under south pole. lie in the inter polar gaps. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of tappings for each equalizer ring is equal to number of poles. number of parallel paths. number of commutator segments. number of pole pairs. number of poles. number of parallel paths. number of commutator segments. number of pole pairs. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be less than 6 V more than 6 V zero 6 V less than 6 V more than 6 V zero 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has almost constant speed over their full load range? Series. Compound (cummolative). none of these. Shunt. Series. Compound (cummolative). none of these. Shunt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 570 A. 460 A. 250 A. 340 A. 570 A. 460 A. 250 A. 340 A. ANSWER DOWNLOAD EXAMIANS APP
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