Electrical Engineering Quiz 16

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Electrical Engineering Quiz 16

1 / 50

The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be____________?

2 / 50

IC = [a / (1 ? a )] IB + [___________ / (1 ? a )?

3 / 50

The law that the induced e.m.f. and current always oppose the cause producing them is due to____________?

4 / 50

Which of the following is an advantage of electric traction over other methods of traction ?

5 / 50

For faithful amplification by a transistor circuit, the value of VCE should______________for silicon transistor?

6 / 50

A gain of 1,000,000 times in power is expressed by_____________?

7 / 50

In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of__________?

8 / 50

With increase in firing angle,

9 / 50

In alkaline cell the electrolyte is_____________?

10 / 50

In D.C. generators, lap winding is used for______________?

11 / 50

The power consumed in a circuit element will be least when the phase difference between the current and voltage is________?

12 / 50

In case of three core flexible cable the colour of the neutral is_________?

13 / 50

To prevent the generation of static charges on rubber or flat leather__________?

14 / 50

The uniform magnetic field is______________?

15 / 50

The overall efficiency of steam locomotive is around_____________?

16 / 50

The kinetic energy of a bounded electron is______________?

17 / 50

If B is the flux density, I the length of conductor and v the velocity of conductor, then induced e.m.f. is given by______________?

18 / 50

In A.C. series motor compensating winding is employed to_____________?

19 / 50

Low tension cables are generally used up to___________?

20 / 50

The capacity of a lead-acid cell is measured in_____________?

21 / 50

The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other ?

22 / 50

In a distribution system, in order to improve power factor, the synchronous capacitors are installed__________?

23 / 50

Starters are used with D.C. motors because______________?

24 / 50

The power developed by a synchronous motor will be maximum when the load angle is____________?

25 / 50

Which of the following is the disadvantage due to low power factor?

26 / 50

Superconductors are becoming popular for use in________________?

27 / 50

The no-load current drawn by transformer is usually what per cent of the full-load current ?

28 / 50

In a highly capacitive circuit the__________?

29 / 50

The condition for maximum power in case of D.C. motor is______________?

30 / 50

Shunt capacitance is neglected while considering______________?

31 / 50

Annual operating expenditure of a power plant consists of_________?

32 / 50

The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as___________?

33 / 50

Addition of pentavalent impurity to a semiconductor creates many________________?

34 / 50

The capacitance of a capacitor is not affected by____________?

35 / 50

Differentially compound D.C. motors can find applications requiring___________?

36 / 50

For good stabilsation in voltage divider bias, the current I1 flowing through R1 and R2 should be equal to or greater than_____________?

37 / 50

Which of the following is an advantage of stranded conductor over equivalent single conductor ?

38 / 50

The active material of the positive plates of silver-zinc batteries is_________?

39 / 50

Snubber circuit is used with SCR_________________?

40 / 50

The parallel combination of a 470 ? resistor and a 680 ? resistor is in series with the parallel combination of four 2 k? resistors. The total resistance is___________?

41 / 50

In a loss-free R-L-C circuit the transient current is__________?

42 / 50

The horizontal intercept of dc load line is the same as ideal____________?

43 / 50

If holding current of a thyristor is 2 mA then latching current should be_____?

44 / 50

In a two value capacitor motor, the capacitor used for running purposes is_______________?

45 / 50

Which of the following load is responsible for lower power factor of supply system__________?

46 / 50

The radio wave picked up by the receiving antenna is amplified about _________________ times to have reasonable sound output?

47 / 50

When the modulating signal controls the frequency of the carrier, we get______________?

48 / 50

In constant frequency PWM, at perturbation the amplitude of the sinusoidal component is a___________?

49 / 50

The two important advantages of a JFET are _________________?

50 / 50

Negative voltage regulation is indicative that the load is___________?

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