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Electrical Engineering Quiz 17

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Electrical Engineering Quiz 17

1 / 50

Hysteresis motor is particularly useful for high-quality record players and tape-recorders because___________?

2 / 50

A universal RLC bridge uses_________________?

3 / 50

When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in___________?

4 / 50

Binary?vapour cycles are used to_____________?

5 / 50

In dual converters________________?

6 / 50

The low power factor of induction motor is due to___________?

7 / 50

A transistor has____________?

8 / 50

For a transformer, operating at constant load current, maximum efficiency will occur at______________?

9 / 50

Air gap has_________eluctance as compared to iron or steel path?

10 / 50

The capacity of capacitor bank used in power factor correction is expressed in terms of____________?

11 / 50

Solar thermal power generation can be achieved by_______________?

12 / 50

Man made noise are______________ variations?

13 / 50

For which of the following ?ampere second? could be the unit ?

14 / 50

A half-wave rectifier has an input voltage of 240 V r.m.s. If the step-down transformer has a turns ratio of 8:1, what is the peak load voltage? Ignore diode drop?

15 / 50

Addition of zeros in transfer function causes which of the following ?

16 / 50

Super conductivity can be destroyed by_____________?

17 / 50

While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?

18 / 50

Which of the following is the main advantage of an auto-transformer over a two winding transformer?

19 / 50

The most commonly used amplifier in sample & hold circuits is______________?

20 / 50

The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the________________?

21 / 50

An uncharged conductor is placed near a charged conductor, then_____________?

22 / 50

Underground cables are laid at sufficient depth___________?

23 / 50

Locomotive having monomotor bogies________________?

24 / 50

In a full bridge VSI, in order to avoid the short circuit across the DC bus and the undefined AC output voltage condition, the modulating technique should ensure that___________?

25 / 50

The rotor copper losses, in a synchronous motor, are met by____________?

26 / 50

Which of the following materials are diamagnetic ?

27 / 50

In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of_________________?

28 / 50

An electrolytic capacitor is generally made to provide__________?

29 / 50

Which of the following acts as a protection against high voltage surges due to lightning and switching ?

30 / 50

A certain circuit is composed of two parallel resistors. The total resistance is 1,403 ?. One of the resistors is 2 k?. The other resistor value is____________?

31 / 50

A common base configuration of a pnp transistor is analogous to _____________?of a JFET

32 / 50

Velocity error constant of a system is measured when the input to the system is unit ___________ function?

33 / 50

In a silicon controlled rectifier, the load is connected___________?

34 / 50

The switch that has the fastest speed of operation is ____________ switch?

35 / 50

When the interconnector between two stations has large reactance?

36 / 50

At series resonance, the net reactive component of circuit current is _______________?

37 / 50

______ of electrolyte indicates the state of charge of the battery

38 / 50

In power plants insurance cover is provided for which of the following?

39 / 50

Power factor of electric bulb is__________?

40 / 50

An induction meter can handle current up to_____________?

41 / 50

In a Zener voltage regulator, the changes in load current produce changes in _________________?

42 / 50

The insulation of the cable decreases with__________?

43 / 50

An instrument transformer is used to extend the range of______________?

44 / 50

When earth fault occurs______________?

45 / 50

A 2-transistor class B power amplifier is commonly called ______________ amplifier?

46 / 50

In D.C. machines fractional pitch winding is used__________?

47 / 50

Ships are generally powered by___________?

48 / 50

A transformer cannot raise or lower the voltage of a D.C. supply because_______________?

49 / 50

Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?

50 / 50

Electro-mechanical voltage regulators are generally used in___________?

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