Category: ELECTRICAL ENGINEERING

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 …

Q.371 Hard steel is suitable for making permanent magnets because A. it has good residual magnetism B. its hysteresis loop has large area C. its mechanical strength is high D. it mechanical strength is low Ans.: A Q.372 A graph Read More …

Q.341 The steady state stability of the power system is most effected by A. transmission line reactance B. Voltage at generator bus C. stability of generator D. power factor of the load Ans.: A Q.342 In case of HVDC transmission Read More …

Q.356 Which of the following is not true about fuel cells? A. cost is higher than batteries B. no recharging is needed C. more efficient D. need more than two electrodes Ans.: D Q.357 Which of the following cable is Read More …