Electrical Machines The power flow of a dc motor, with respect to a DC generator is reversed. increased. modified. none of these. reversed. increased. modified. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The total core loss of a 400 V, 50 Hz transformer is 2400W, when it is supplied by 200 V, 25 Hz loss is 800W. Calculate eddy current loss and hysteresis loss? 1400W, 1000W 1000W , 1400W 1600W, 800W 800W, 1600W 1400W, 1000W 1000W , 1400W 1600W, 800W 800W, 1600W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is not suitable for frequent starting and stopping? Resistance split phase motor All of these Capacitor run motor Capacitor split phase motor Resistance split phase motor All of these Capacitor run motor Capacitor split phase motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is used for the _______ ? above rated speed None of these both 1 and 2 below rated speed above rated speed None of these both 1 and 2 below rated speed 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 1203 1080 1200 1000 1203 1080 1200 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced DC Shunt Motor The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will remains almost constant. DC Shunt Motor The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
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