Electrical Machines Eg (generated emf) and Eb (back emf) both are none of above. changes. same. different. none of above. changes. same. different. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50Hz, the emf in the rotor will have a frequency of 48.5Hz 51.5Hz 2.5Hz 1.5Hz 48.5Hz 51.5Hz 2.5Hz 1.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if φ is the flux per pole and f is the frequency of the emf induced E then E ∝ φf E ∝ φ/f E ∝ 1/(φf) E ∝ f/φ E ∝ φf E ∝ φ/f E ∝ 1/(φf) E ∝ f/φ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At the instant of starting, the per unit slip of 3 - Φ induction motor is 0.1. 0.5. 1.0. 0.05. 0.1. 0.5. 1.0. 0.05. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, which of these parameters remain the same whether it runs as a DC motor or a DC generator? Armature current. Induced emf. Mechanical power. Can not be determined. Armature current. Induced emf. Mechanical power. Can not be determined. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Torque developed in the rotor is not dependent on the slip inversely proportional to slip either of these directly proportional to slip not dependent on the slip inversely proportional to slip either of these directly proportional to slip ANSWER DOWNLOAD EXAMIANS APP
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