Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.2 lag unity 0.2 lead 0.9 lag 0.2 lag unity 0.2 lead 0.9 lag ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? flux(φ) both A and B None of these armature current(Ia) flux(φ) both A and B None of these armature current(Ia) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the middle of hv side at the phase end of hv side at the phase end of lv side at the neutral side end of hv side at the middle of hv side at the phase end of hv side at the phase end of lv side at the neutral side end of hv side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series field consists of--------number of turns and ---------- conductors respectively large and thick less and thick less and thin large and thin large and thick less and thick less and thin large and thin ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 400 / 200 V, Y - Y connected wound rotor induction motor has 0.06 Ω rotor resistance and 0.3 Ω standstill reactance per phase. To make the starting torque equal to maximum torque of the motor the additional resistance required 0.24 Ω. 0.78 Ω. 0.45 Ω. 0.66 Ω. 0.24 Ω. 0.78 Ω. 0.45 Ω. 0.66 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the commutator pitch? Number of commutator segments between two successive coils. The distance between the staring of first coil and its next successive coil Number of conductors spanned by one coil at the back end of the armature. Number of conductors spanned by one coil at the front end of the armature. Number of commutator segments between two successive coils. The distance between the staring of first coil and its next successive coil Number of conductors spanned by one coil at the back end of the armature. Number of conductors spanned by one coil at the front end of the armature. ANSWER DOWNLOAD EXAMIANS APP
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