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Electrical Engineering Quiz 37

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Electrical Engineering Quiz 37

1 / 50

Which of the following statements is incorrect _________________?

2 / 50

The chemical effect of current is used in ______________?

3 / 50

An OPAMP has a slew rate of 5 V/? S .The largest sine wave O/P voltage possible at a frequency of 1 MHZ is_______________?

4 / 50

Which of the following single-phase motors has relatively poor starting torque ?

5 / 50

In three-phase induction motors sometimes copper bars are placed deep in the rotor to___________?

6 / 50

Belt conveyer can be used to transport coal at inclinations upto____________?

7 / 50

The pressure on the two sides of the impulse wheel of a steam turbine_____?

8 / 50

The starting torque of a three phase induction motor can be increased by__________?

9 / 50

In a four-pole D.C. machine____________?

10 / 50

In a 3 phase bridge rectifier the ripple frequency is _____________?

11 / 50

Which of the following capacitor is preferred in case of single phase motor ?

12 / 50

Shelf life of a small dry cell is___________?

13 / 50

Which of the following is not associated with a p-n junction?

14 / 50

If starting winding of a single-phase induction motor is left in the circuit, it will____________?

15 / 50

SCRs are used in series to meet_______________?

16 / 50

A CS JFET amplifier has a load resistance of 10 kO , RD= 820O . If gm= 5mS and Vin= 500 mV, the output signal voltage is__________________?

17 / 50

In a paper mill where constant speed is required________________?

18 / 50

The flash point of transformer oil should be higher than_______________?

19 / 50

Distance relays are generally_____________?

20 / 50

The value of critical field below the transition temperature will_______________?

21 / 50

NAND gates are preferred over others because these__________________?

22 / 50

In a transistor, signal is transferred from a___________circuit?

23 / 50

Permanent magnets are normally made of_____________?

24 / 50

An SCR is made up of silicon because?

25 / 50

D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the________________?

26 / 50

At parallel resonance, the line current is_______________?

27 / 50

The material for commutator brushes is generally_______________?

28 / 50

All the electrical connections between the battery and vehicle should be by____________?

29 / 50

In a D.C. generator all of the following could be the effects of iron losses except___________?

30 / 50

Which of the following Power Plant causes least environmental pollution____________?

31 / 50

When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on_________________?

32 / 50

In a 3 phase half wave rectifier, when firing angle is less than 90 degree, then the average dc output voltage becomes__________________?

33 / 50

By which of the following methods motor rating for variable load drives can be determined ?

34 / 50

The usual spans with R.C. poles are_______________?

35 / 50

If ADM = 3500 and ACM = 0.35, the CMRR is _______________?

36 / 50

The coils of D.C. motor starter are wound with wire of_______________?

37 / 50

A power factor meter has________________?

38 / 50

A moving-coil permanent-magnet instrument can be used as ____________by using a low resistance shunt?

39 / 50

Which of the following is usually not the generating voltage ?

40 / 50

Wave winding is composed of_______________?

41 / 50

A class C amplifier always drives _____________load?

42 / 50

An exciter for a turbo generator is a_____________?

43 / 50

Which winding of the transformer has less cross-sectional area?

44 / 50

Which of the following is the best method for determining the stability and transient response ?

45 / 50

In the design of a biasing circuit, the value of collector load RC is determined by__________________?

46 / 50

A closed path made by several branches of the network is known as____________?

47 / 50

In a level compounded D.C. generator, full load terminal voltage is______________?

48 / 50

The gate voltage in a JFET at which drain current becomes zero is called ______________ voltage?

49 / 50

The coupling angle or load angle of synchronous motor is defined as the angle between the__________?

50 / 50

The effect of sulphation is that the internal resistance__________?

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