Electrical Machines Voltage across the open circuited field termninals of a synchorous machine under slip test is AC of supply frequency. A modulated supply frequency AC voltage with slip frequency envelop. DC of slip frequency. DC. AC of supply frequency. A modulated supply frequency AC voltage with slip frequency envelop. DC of slip frequency. DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is 600 660 60 40 600 660 60 40 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? -3% -3.33% +3.33% +3% -3% -3.33% +3.33% +3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slot wedges in a dc machine is made up of fibre. mild steel. silicon steel. cast iron. fibre. mild steel. silicon steel. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principal of starting of 3 - Φ IM is similar to repulsion motor type starting. capacitor run IM. transformer with short-circuited secondary. synchronous motor. repulsion motor type starting. capacitor run IM. transformer with short-circuited secondary. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Torque angle of a synchorous machine operating from a constant voltage bus is usually defined as the space angle between Stator mmf wave and resultant mmf wave. Rotor mmf wave and resultant flux density wave. Stator mmf wave and resultant flux density. Rotor mmf wave and stator mmf wave. Stator mmf wave and resultant mmf wave. Rotor mmf wave and resultant flux density wave. Stator mmf wave and resultant flux density. Rotor mmf wave and stator mmf wave. ANSWER DOWNLOAD EXAMIANS APP
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