Month: April 2020

Q.526 Phase difference between the output and input voltage of common Emitter Amplifier is A. 180° B. 0° C. 270° D. 90° Ans.: A Q.527 A series capacitor used in a filter circuit represent A. low pass filter B. Band Read More …

Q.481 A flow of 1000 electrons per second constitutes a current of A. 2.6 x 10^-19A B. 1.6 x 10^-15A C. 1.602 x 10^-19A D. 628 x 10^-12A Ans.: B Q.482 If the length of a conductor is doubled and Read More …

Q.466 A D.O.L starter is employed for starting electric motor of rating upto A. 1HP B. 3.75 HP C. more than 10 HP D. Upto 10 HP Ans.: B Q.467 A single phasw transformer has specifications 250 KVa, 11000V/415 V, Read More …

Q.451 Blind spot in a point in zones of protection where A. Partial protection is available B. No protection is available C. Complete protection is available D. None of the above Ans.: B Q.452 Which zone of distance relay is Read More …

Q.436 Two voltages e1 and e2 are given by 1 = 10sinɷt and e2 = 20 sin(ɷt+30) then A. e1 leads by e2 by 30° B. e2 leads e1 by 30° C. e1 lags e2 by 30° D. e lags Read More …

Q.421 In residential wiring in practice for earthing the following method is adopted A. Neutral Earthing B. Pipe Earthing C. Plate Earthing D. Resistance Earthing Ans.: C Q.422 As temp. increases, the resistance value also increases in A. Conductor B. Read More …

Q.406 The 8051 micro-controller is of A. 8 bit B. 16 bit C. 4 bit D. 32 bit Ans.: B Q.407 The snubber circuit is used in Power Electronic- To reduce high di/dt B. To reduce high dv/dt C. To Read More …

  Q. 391 A 3-phase transmission line uses 1.24 cm dia. Conductor and these are placed at corners of equivalent triangle of 2 m. The inductance/phase is A. 12 x 10^-7 H B. 8.4 x 10^-7 H C. 7.6 x Read More …