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Electrical Engineering Quiz 50

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Electrical Engineering Quiz 50

1 / 50

Thyristor can be protected from over voltages by using____________?

2 / 50

The double energy transient occur in the____________?

3 / 50

Welding generator will have____________?

4 / 50

Specific energy consumption is affected by which of the following factors ?

5 / 50

In a flyback converter, the inductor of the buck-boost converter has been replaced by a_____________?

6 / 50

Out of the following capacitors of identical rating which one will have the smallest dimensions ___________ ?

7 / 50

Which of the following is disadvantage of fast recovery diodes?

8 / 50

Capacitance grading of cable implies__________?

9 / 50

Star/star transformers work satisfactorily when________________?

10 / 50

The function of breather in a transformer is___________?

11 / 50

Mica capacitors are characterized by all of the following except___________?

12 / 50

The battery connections required to forward bias a pn junction are_________________?

13 / 50

The e.m.f. of an Edison cell, when fully charged, is nearly______________?

14 / 50

The r.m.s. value and mean value is the same in the case of___________?

15 / 50

Dielectric strength of a medium is usually expressed in____________?

16 / 50

For which of the following locomotives the maintenance requirements are the least ?

17 / 50

The maximum load that a power transformer can carry is limited by its________________?

18 / 50

Between the branch voltages of a loop the Kirchhoff s voltage law imposes_____________?

19 / 50

The heated parts of an electrical machine dissipate heat into their surroundings by which of the following modes of heat dissipation ?

20 / 50

The noise produced by a transformer is termed as_______________________?

21 / 50

If the value of collector current IC increases, then the value of VCE ______________?

22 / 50

1 angstrom is equal to______________?

23 / 50

The high voltage winding is usually which of the following type ?

24 / 50

ICs are generally made of ________________?

25 / 50

The resistivity of water should not be less than_____________?

26 / 50

If the collector supply is 10V, then collector cut off voltage under d.c. conditions is _______________?

27 / 50

The voltage control in electric supply networks in required on account of which of the following reasons ?

28 / 50

?Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen from the terminals of the load?. The above statement is associated with____________?

29 / 50

The Graetz bridge makes excellent use of ______________?

30 / 50

Which of the following methods may be adopted to reduce the effects of armature reaction ?

31 / 50

A power semiconductor may undergo damage due to____________?

32 / 50

The range of efficiency for shaded pole motors is______________?

33 / 50

Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because_____________?

34 / 50

What happen due to high di / dt____________?

35 / 50

Two multimeters A and B have sensitivities of 10 kO/V and 30 kO/V respectively. Then ______________?

36 / 50

The current due to electron flow in conduction band is the hole current in valence band?

37 / 50

A mercury arc rectifier possesses __________ regulation characteristics

38 / 50

The r.m.s. value of pure cosine function is_________?

39 / 50

In a cable, the maximum stress under operating conditions is at___________?

40 / 50

Solid type cables are considered unreliable beyond 66 kV because___________?

41 / 50

In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating________________?

42 / 50

Rankine cycle efficiency of a good steam power plant may be in the range of____________?

43 / 50

Galvanised steel wire is generally used as______________?

44 / 50

The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is______________?

45 / 50

In voltage divider bias, operating point is 3 V, 2 m If VCC = 9 V, RC = 2.2 kO, what is the value of RE ?

46 / 50

With direct water cooling it is possible to have ratings of about_____________?

47 / 50

According to Fleming?s right-hand rule for finding the direction of induced e.m.f., when middle finger points in the direction of induced e.m.f., forefinger will point in the direction of____________?

48 / 50

In RC coupling, the value of coupling capacitor is about_______________?

49 / 50

A 200 turn coil having an axial length of 30 mm and a radius of 10 mm is pivoted in a magnetic field having a flux density of 0.8 T. If the coil carries a current of 0.5 A, the torque acting on the coil will be_____________?

50 / 50

Laminations of core are generally made of________________?

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Electrical Engineering Quiz 1
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