Electrical Machines In a transformer which of the following losses are zero? Iron loss Copper loss All of these Rotational loss Iron loss Copper loss All of these Rotational loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 8-pole, DC generator has a simplex wave-wound armature containing 32 coils of 6 turns each. Its flux per pole is 0.06 Wb. The machine is running at 250 rpm. The induced armature voltage is 192 V 384 V 768 V 96 V 192 V 384 V 768 V 96 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At what power factor, the voltage regulation of a transformer can be zero ? Lagging power factor. Unity power factor. Zero power factor. Leading power factor. Lagging power factor. Unity power factor. Zero power factor. Leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series 86.91 V. 76.91 V. 56.91 V. 66.91 V. 86.91 V. 76.91 V. 56.91 V. 66.91 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines, B is bigger than A for the same current rating A is bigger than B for the same voltage rating both are of the same size for the same current rating A is bigger than B for the same current rating B is bigger than A for the same current rating A is bigger than B for the same voltage rating both are of the same size for the same current rating A is bigger than B for the same current rating ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip test is performed to determine direct axis reactance and quadrature axis reactance positive sequence reactance and negative sequence reactance All of these slip direct axis reactance and quadrature axis reactance positive sequence reactance and negative sequence reactance All of these slip ANSWER DOWNLOAD EXAMIANS APP
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