MCQ on Transistors (Multiple Choice Questions and Answers On Transistors)

MCQ on Transistors with answers and explanations for placement tests and job interviews. These solved Transistors MCQ are useful for the campus placement for all freshers including Engineering Students, MCA students, Computer and IT Engineers, etc.

Our Transistors (Transistors multiple Choice Questions and Answers) focuses on the basic concept of Transistors. We will regularly update the quiz and most interesting thing is that questions come in a random sequence. So every time you will feel new questions.

We have already published a blog post that contains short questions related to embedded C. If you want you can also see this blog post. It would help you in your preparation. “Embedded  C Interview Questions”.

So let’s see the set of MCQ on Transistors (Multiple Choice Questions & Answers on “Transistors”). If you have any query regarding this “MCQ on Transistors”, then you can contact me directly, and don’t forget to mention MCQ on Transistors in the subject line.

Guideline of Transistors MCQ:

This MCQ on Transistors is intended for checking your knowledge of Transistors. It takes 1 hour to pass the MCQ on Transistors. If you don’t finish the Transistor MCQ within the mentioned time, all the unanswered questions will count as wrong. You can miss the questions by clicking the “Next” button and return to the previous questions by the “Previous” button. Every unanswered question will count as wrong. MCQ on Transistors has features of randomization which feel you a new question set at every attempt.

In this Transistors Quiz, we have also implemented a feature that not allowed the user to see the next question or finish the Transistors quiz without attempting the current Transistors MCQ.

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Transistors MCQ

MCQ on Transistors

Transistors MCQ

1 / 75

In a pnp transistor, the current carriers are ………….

2 / 75

. The ends of a load line drawn on a family of curves determine ……

3 / 75

Beta’s current ratio is ……..

4 / 75

The most commonly used semiconductor in the manufacture of a transistor is ………….

5 / 75

A transistor has …………………

6 / 75

If VCC = +18 V, voltage-divider resistor R1 is 4.7 komega.gif, and R2 is 1500omega.gif, then the base bias voltage is ……….

7 / 75

With low-power transistor packages, the base terminal is usually the ……….

8 / 75

A transistor has a mca12_1001a1.gif of 250 and a base current, IB, of 20 mu.gif A. The collector current, IC, equals to …………….

9 / 75

A transistor is a …………… operated device

10 / 75

The collector-base junction in a transistor has ……………..

11 / 75

With a PNP circuit, the most positive voltage is probably …………

12 / 75

The input/output relationship of the common-collector and common-base amplifiers is ………..

13 / 75

The relation between β and α is …………..

14 / 75

. IC = β IB + ………..

15 / 75

. A transistor may be used as a switching device or as a ………….

16 / 75

The input impedance of a transistor is ………….

17 / 75

. Which is the higher gain provided by a CE configuration?

18 / 75

In a transistor if β = 100 and collector current is 10 mA, then IE is …………

19 / 75

The emitter of a transistor is ………………… doped

20 / 75

What is the current gain for a common-base configuration where IE = 4.2 mA and IC = 4.0 mA

21 / 75

A heat sink is generally used with a transistor to …………

22 / 75

Three different Q points are shown on a dc load line. The upper Q point represents the ………….

23 / 75

To operate properly, a transistor’s base-emitter junction must be forward biased with reverse bias applied to which junction?

24 / 75

In a transistor, the base current is about ………….. of emitter current

25 / 75

Most of the majority carriers from the emitter ………………..

26 / 75

The value of β for a transistor is generally ………………..

27 / 75

The leakage current in CE arrangement is ……………. that in CB arrangement

28 / 75

A current ratio of IC/IE is usually less than one and is called …………

29 / 75

BC 147 transistor indicates that it is made of …………..

30 / 75

The most commonly used transistor arrangement is …………… arrangement

31 / 75

Often a common-collector will be the last stage before the load; the main function(s) of this stage is to ………….

32 / 75

The element that has the biggest size in a transistor is ………………..

33 / 75

The collector of a transistor is …………. doped

34 / 75

. IC = [α / (1 – α )] IB + […….. / (1 – α )]

35 / 75

. In a transistor ………………..

36 / 75

A collector characteristic curve is a graph showing ………..

37 / 75

The voltage gain of a transistor connected in common collector arrangement is ………..

38 / 75

Total emitter current is …………

39 / 75

The base of a transistor is ………….. doped

40 / 75

For a CC configuration to operate properly, the collector-base junction should be reverse biased, while forward bias should be applied to …………… junction.

41 / 75

If a 2 mV signal produces a 2 V output, what is the voltage gain?

42 / 75

At the base-emitter junctions of a transistor, one finds ……………

43 / 75

In a transistor, collector current is controlled by ………..

44 / 75

If an input signal ranges from 20–40 mu.gifA (microamps), with an output signal ranging from .5–1.5 mA (milliamps), what is the ac beta?

45 / 75

The phase difference between the input and output voltages of a transistor connected in common emitter arrangement is ………………

46 / 75

IC = [α / (1 – α )] IB + ………….

47 / 75

The voltage gain in a transistor connected in ………………. arrangement is the highest

48 / 75

In a CE configuration, an emitter resistor is used for ……

49 / 75

The Q point on a load line may be used to determine …………

50 / 75

In a npn transistor, ……………. are the minority carriers

51 / 75

The phase difference between the input and output voltages in a common base arrangement is …………….

52 / 75

. When a silicon diode is forward biased, VBE for a CE configuration is ……..

53 / 75

What is the collector current for a CE configuration with a beta of 100 and a base current of 30 mu.gifA?

54 / 75

In a tansistor, IC = 100 mA and IE = 100.2 mA. The value of β is …………

55 / 75

IC = αIE + ………….

56 / 75

. When transistors are used in digital circuits they usually operate in the ………….

57 / 75

The number of depletion layers in a transistor is …………

58 / 75

Most of the electrons in the base of an NPN transistor flow …………

59 / 75

The power gain in a transistor connected in ……………. arrangement is the highest

60 / 75

The phase difference between the input and output voltages of a transistor connected in common collector arrangement is ………………

61 / 75

Voltage-divider bias provides ……….

62 / 75

The value of α of a transistor is ……….

63 / 75

The input impedance of a transistor connected in …………….. arrangement is the highest

64 / 75

The output impedance of a transistor is ……………..

65 / 75

The C-B configuration is used to provide which type of gain?

66 / 75

. The current IB is …………

67 / 75

The output impedance of a transistor connected in ……………. arrangement is the highest

68 / 75

As the temperature of a transistor goes up, the base-emitter resistance ……………

69 / 75

A transistor is connected in CB mode. If it is not connected in CE mode with same bias voltages, the values of IE, IB and IC will …………..

70 / 75

ICEO = (………) ICBO

71 / 75

In a transistor, signal is transferred from a …………… circuit

72 / 75

With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be ……

73 / 75

If the value of α is 0.9, then value of β is ………..

74 / 75

If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point ………….

75 / 75

The arrow in the symbol of a transistor indicates the direction of ………….

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2 comments

  1. This MCQ test has many questions that have either wrong answers, multiple correct answers, and answers that may be right or wrong depending on particular conditions. I can help you fix the questions and make the quiz useful.

    I’m an electronics engineer with a BSEE and MSEE, and have been designing with transistors for over 30 years.

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