Electrical Machines Capacitor in split phase induction motor is used to reduce the harmonics. start the motor. improve the starting torque. improve the power factor. reduce the harmonics. start the motor. improve the starting torque. improve the power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator increases armature speed. reduces inter poles flux density. reduces generator emf. results in sparking trouble. increases armature speed. reduces inter poles flux density. reduces generator emf. results in sparking trouble. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt= Ea + Iara Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt = Ea + Ia(ra + rs) Vt= Ea + Iara Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt = Ea + Ia(ra + rs) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Air core transformer as compared to iron core transformer, has more magnetic core loss. no magnetic core loss. more copper loss. less magnetic core loss. more magnetic core loss. no magnetic core loss. more copper loss. less magnetic core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical on it because otherwise it will Draw too much current. Produce sparking at brushes. Develop excessive speed and damage itself. Open fuse or circuit breaker. Draw too much current. Produce sparking at brushes. Develop excessive speed and damage itself. Open fuse or circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine, the armature windings are placed on the rotor because of necessity for commutation. electromechanical energy conversion. generation of voltage. development of torque. commutation. electromechanical energy conversion. generation of voltage. development of torque. ANSWER DOWNLOAD EXAMIANS APP
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