Electrical Machines A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be 25 W. 36 W. 30 W. 28 W. 25 W. 36 W. 30 W. 28 W. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronising power of a synchronous motor varies directly as synchronous reactances Xs directly as Xs2 All of these inversely as 1/Xs directly as synchronous reactances Xs directly as Xs2 All of these inversely as 1/Xs ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature shaft must be able to with stand Any unbalanced magnetic pull on the armature core. Twisting stains due to transmission of torque. Bending moment due to weight of the armature. All of these Any unbalanced magnetic pull on the armature core. Twisting stains due to transmission of torque. Bending moment due to weight of the armature. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has more stability salient pole motor None of these cylindrical motor both motors has same stability salient pole motor None of these cylindrical motor both motors has same stability ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following load normally needs starting torque more than rated torque? Centrifugal pumps. Conveyers. Air compressors. Blowers. Centrifugal pumps. Conveyers. Air compressors. Blowers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor cannot be started on no load? shunt motors both B and C series motors cumulative compound motors shunt motors both B and C series motors cumulative compound motors ANSWER DOWNLOAD EXAMIANS APP
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