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Electrical Engineering Quiz 6

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Electrical Engineering Quiz 6

1 / 50

When the initial conditions of a system are specified to be zero it implies that the system is______________?

2 / 50

The parameter hie stands for input impedance in _____________?

3 / 50

Cables, generally used beyond 66 kV are___________?

4 / 50

For closer tolerances which of the following capacitors is usually preferred ?

5 / 50

Which of the following methods does not take into account the maximum temperature rise under variable load conditions ?

6 / 50

When an iron piece is placed in a magnetic field_____________?

7 / 50

Which of the following statements regarding a reluctance motor is incorrect ?

8 / 50

When the demand of consumers is not met by a power plant, it will resort to which of the following?

9 / 50

In radiative coupling, the emitter radiation field_____________?

10 / 50

For high value of diversity factor, a power station of given installed capacity will be in a position to supply?

11 / 50

Hopkinson?s test on D.C. machines is conducted at_______________?

12 / 50

Most sensitive galvanometer is_____________?

13 / 50

In a commutator_____________?

14 / 50

For a consumer the most economical power factor is generally____________?

15 / 50

With the increase in temperature, the speed of DC series motor______________?

16 / 50

What is the total resistance of a voltmeter on the 10 V range when the meter movement is rated for 50 ?A of full-scale current ?

17 / 50

The ionization potential of mercury is approximately_____________?

18 / 50

The auto-starters (using three auto transformers) can be used to start cage induction motor of the following type__________?

19 / 50

Which of the following power plant has least fuel transportation______________?

20 / 50

Kingdom Protoctista includes_______________?

21 / 50

A transformer oil must be free from________________?

22 / 50

For a hole which of the following statements is incorrect ?

23 / 50

Besides a constant speed a synchronous rotor possesses which of the following advantages ?

24 / 50

The transfer function of PWM is generally developed in______________?

25 / 50

Synchronous motors are generally not self-starting because:

26 / 50

In case of _________________ free running and coasting periods are generally long ?

27 / 50

Tractive effort is required to_____________?

28 / 50

The crawling in the induction motor is caused by____________?

29 / 50

A repulsion motor is equipped with__________?

30 / 50

Phase margin of a system is used to specify which of the following ?

31 / 50

While applying Fleming?s right-hand rule to And the direction of induced e.m.f., the thumb points towards___________?

32 / 50

The initial permeability of an iron rod is________________?

33 / 50

For measurements on high voltage capacitors, the suitable bridge is_______________?

34 / 50

A zener diode has ________________?

35 / 50

For a D.C. shunt motor if the excitation is changed_______________?

36 / 50

In ______________ the speed can be varied by changing the position of brushes?

37 / 50

To avoid the effect of stray magnetic field in A.C. bridges we can use_______________?

38 / 50

In which?of the following power plants the maintenance cost is usually high?

39 / 50

You have to replace 1500 Q resistor in radio. You have no 1500 Q resistor but have several 1000 Q ones which you would connect__________?

40 / 50

An open coil has_____________?

41 / 50

n a common-source JFET amplifier, the output voltage is _____________?

42 / 50

In class A operation, the operating point is generally located_____________of the d.c. load line?

43 / 50

The breakdown of insulation of the cable can be avoided economically by the use of___________?

44 / 50

In an LC transistor oscillator, the active device is___________?

45 / 50

The air resistance to the movement of the train is proportional to_____________?

46 / 50

A pn junction acts as a__________________?

47 / 50

Carbon rods are used in wet and dry cells because_____________?

48 / 50

To limit short-circuit current in a power system are used______________?

49 / 50

Form factor of a rectifier is the ratio of ______________?

50 / 50

Which of the following is an electromagnetically device ?

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