A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is 250 V. 200 V. 250 √3 V. 250 / √3 V. TRUE ANSWER : ? YOUR ANSWER : ?
In series RLC circuit what is the power factor just above the resonance frequency? Leading Lagging Unity Zero TRUE ANSWER : ? YOUR ANSWER : ?
The synchronous speed for the seventh space harmonic mmf wave of 8 pole, 50 Hz induction machine will be 5250 rpm in forward direction. 107.14 rpm in reverse direction. 107.14 rpm in forward direction. 5250 rpm in reverse direction. TRUE ANSWER : ? YOUR ANSWER : ?
Condition for a balanced 3 - phase load is that, each phase has the same value of __________________. impedance. power factor. resistance. all of these. TRUE ANSWER : ? YOUR ANSWER : ?
The power dissipated in a pure capacitor is both (B) and (C) above. proportional to the value of capacitance. proportional to applied voltage. zero. TRUE ANSWER : ? YOUR ANSWER : ?
For closer tolerance which of the following capacitors is usually preferred? Ceramic disc capacitor. Mica capacitor. None of them. Paper capacitor. TRUE ANSWER : ? YOUR ANSWER : ?
A conductor of length l meters moves at right angles to a uniform magnetic field of flux density B = 1.5 T. if the velocity of revolution of the conductor is 50 ms-1 then induced e.m.f. in the conductor is 125 V. 100 V. 75 V. 0 V. TRUE ANSWER : ? YOUR ANSWER : ?
What is Va in the below circuit? (6R + 10) / 3. (3R + 10) / 3. (6R - 10) / 3. (4R + 10) / 3. TRUE ANSWER : ? YOUR ANSWER : ?
While comparing magnetic field and electric circuits, the point of dissimilarity exists while considering flux and current flow. mmf and emf. permeance and conductance. reluctance and resistance. TRUE ANSWER : ? YOUR ANSWER : ?
A 100 μF capacitor supplied from 3 V source with a frequency of 50 Hz. The capacitive reactance is 7.96 Ω. 63.68 Ω. 15.92 Ω. 31.84 Ω. TRUE ANSWER : ? YOUR ANSWER : ?