Electrical Machines Voltage across the open circuited field termninals of a synchorous machine under slip test is AC of supply frequency. DC. A modulated supply frequency AC voltage with slip frequency envelop. DC of slip frequency. AC of supply frequency. DC. A modulated supply frequency AC voltage with slip frequency envelop. DC of slip frequency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1000 1200 1080 1203 1000 1200 1080 1203 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC motor are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor ? 16.67%. 15.30%. 18.25%. 14.28%. 16.67%. 15.30%. 18.25%. 14.28%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space waveform of the air-gap flux distribution affects torque but not the voltage voltage but not the torque neither the voltage nor the torque both the torque and voltage torque but not the voltage voltage but not the torque neither the voltage nor the torque both the torque and voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for crane travel, trolley and boom hoist which motor is preferred? Stepper motor. Slip ring induction motor. Synchronous motor. DC differential compound motor. Stepper motor. Slip ring induction motor. Synchronous motor. DC differential compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because none of above. induction motor will become synchronous motor. rotor torque will not be produced. air friction will prevent it. none of above. induction motor will become synchronous motor. rotor torque will not be produced. air friction will prevent it. ANSWER DOWNLOAD EXAMIANS APP
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