Electrical Machines A small air gap in poly phase induction motor helps to increase starting torque. reduce magnetizing current. reduce chance of cogging. reduce chance of crawling. increase starting torque. reduce magnetizing current. reduce chance of cogging. reduce chance of crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors are suitable for computer printer drive ? Stepper motor. Hysteresis motor. Reluctance motor. Shaded pole motor. Stepper motor. Hysteresis motor. Reluctance motor. Shaded pole motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determined by Fleming's left hand rule. Lenz's law. Ampere's law. Fleming's right hand rule. Fleming's left hand rule. Lenz's law. Ampere's law. Fleming's right hand rule. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 55 kVA single phase alternator has an effective resistance of 0.5 Ω. An excitation current of 10 A produces 200 A armature current on short circuit and an emf of 450 V on per circuit. The synchronous reactance will be 2.74 Ω. 25.564 Ω. 2.781 Ω. 2.241 Ω. 2.74 Ω. 25.564 Ω. 2.781 Ω. 2.241 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Methods of synchronizing of alternator may be done by all of these. all dark lamp method. all bright lamp method. one dark two bright. all of these. all dark lamp method. all bright lamp method. one dark two bright. ANSWER DOWNLOAD EXAMIANS APP
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