Electrical Machines Under operating conditions the rotor conductor should be _________________ in induction motor. always opened. always closed. none. semi closed or semi opened. always opened. always closed. none. semi closed or semi opened. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ induction motor draws an current of 50 A from mains when starts by direct switching. If an auto transformer with 60 % tapping is used for starting the current drawn from the mains will be 80. 18. 36. 50. 80. 18. 36. 50. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to demagnetize the field partially. control the armature flux. control the field flux. limit the armature current. demagnetize the field partially. control the armature flux. control the field flux. limit the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous reactance of an alternator represents All of these a reactance operating at synchronous speed armature reactance and leakage reactance field winding reactance All of these a reactance operating at synchronous speed armature reactance and leakage reactance field winding reactance ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the residual magnetism is of the order of 10 %. 15 %. 2.5 %. 20 %. 10 %. 15 %. 2.5 %. 20 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series generators are used in which of the following applications? All of these Air crafts. Used as boosters in dc distribution or transmission. Arc welding. All of these Air crafts. Used as boosters in dc distribution or transmission. Arc welding. ANSWER DOWNLOAD EXAMIANS APP
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