Electrical Machines The 3 - Φ induction motor with rotor circuit open will make noise. not run. get over heated. run normally. make noise. not run. get over heated. run normally. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following load normally needs starting torque more than rated torque? Centrifugal pumps. Blowers. Conveyers. Air compressors. Centrifugal pumps. Blowers. Conveyers. Air compressors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor, damper windings are provided on stator frame. pole faces. rotor shaft. None of these stator frame. pole faces. rotor shaft. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To avoid formation of grooves in the commutator None of these the brushes of same polarity should track each other. brush position has no effect on the commutator grooving. the brushes of opposite polarity should track each other. None of these the brushes of same polarity should track each other. brush position has no effect on the commutator grooving. the brushes of opposite polarity should track each other. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3-phase, 4 pole, 50 Hz synchronous motor the frequency, pole number and the frequency are halved. The motor speed will be 375 rpm 75 rpm 3000 rpm 1500 rpm 375 rpm 75 rpm 3000 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, electric current to the external circuit from armature is given through solid connection. slip rings. commutator. none of above. solid connection. slip rings. commutator. none of above. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS