ITI ICTSM Mock Test: Semester 1

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Created on May 10, 2025
ICTSM

ITI ICTSM- Information & Communication Technology System Maintenance -1st Sem

ICTS- Information & Communication Technology System Maintenance
Semester : 1
Module 5 : Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers
Module 6 : Special Semi Conductors & Power Supply

Name

1 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which configuration of transistor amplifier is most commonly used in electronic circuits?

A) Common base configuration

B) Common emitter configuration

C) Common collector configuration

D) Common drain amplifier configuration

2 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which device used for transistor testing?

A) Ammeter

B) Ohm meter

C) Volt meter

D) Current meter

3 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which type of transformer is used in the DC to AC converter?

A) Auto transformer

B) Step up transformer

C) Isolation transformer

D) Step down transformer

4 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which diode is used in low power communication circuits?

A) Signal diodes

B) Rectifier diodes

C) Switching diodes

D) High power diodes

5 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the advantage of using bias in transistor circuits?

A) Provides positive feedback

B) Never reach saturation

C) Easily sets saturated

D) Gives maximum distortion

6 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the efficiency of linear power supply?

A) 30% - 40%

B) 40% - 50%

C) 50% - 60%

D) 60% - 75%

7 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which type of transistors are required to amplify signals from the microphone / transducer?

A) Low power transistors

B) Medium power transistors

C) High power transistors

D) Epitaxial versa watt transistors

8 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the range of output voltage of regulator IC LM 317?

A) 0 to 25 V

B) 0 to 30 V

C) 0 to 32 V

D) 1.2 V to 32 V

9 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the type of amplifier configuration?

A) Common collector

B) Paraphase amplifier

C) Common base

D) Common emitter

10 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What are the terminals for JFET?

A) Anode, Cathode and Gate

B) Emitter, Collector and Base

C) MT1, MT2 and Gate

D) Gate, Drain and Source

11 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which electrical quantity controls the operation of the bipolar transistor device?

A) Energy

B) Current

C) Voltage

D) Frequency

12 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is having three terminal device?

A) Diode

B) Transistor

C) Capacitor

D) Resistor

13 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the disadvantage of the two diode full wave rectifier compared with a bridge rectifier?

A) DC output level is higher

B) The ripple frequency is higher

C) The need of centre tapped transformer

D) Each diode carries half the load current

14 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is having terminals for Emitter, Base1 and Base 2?

A) FET

B) UJT

C) MOSFET

D) BJT

15 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is three terminal semiconductor device?

A) Diode

B) UJT

C) Zener diode

D) Inductor

16 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the full form of the abbreviation CVT?

A) Complex Virtual Technology

B) Constant Voltage Transformer

C) Composite Video Transmission

D) Complementary Voltage Terminal

17 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which device is converts direct current to alternating current?

A) Diode

B) Inverter

C) Rectifier

D) Zener diode

18 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the status of the transistor in the circuit?

A) Acting as an amplifier

B) Acting as an oscillator

C) Acting as an open switch

D) Acting as a closed switch

19 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the function of the transistor 2N 3055 in the circuit?

A) To reduce load current

B) To function as error amplifier

C) As short circuit current sensor

D) To handle higher load current

20 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

How can you confirm a transistor as defective?

A) By circuit testing

B) By ohm meter testing

C) By physical testing

D) By voltage measurements

21 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the operating frequency of linear power supply?

A) 20 Hz to 25 Hz

B) 50 Hz to 60 Hz

C) 5 kHz to 10 kHz

D) 15 kHz to 1 MHz

22 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which electric component maintains constant output voltage in the power supply section marked ‘X’?

A) Rheostat

B) Transistor

C) Zener diode

D) Potentiometer

23 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which one is called universal bias?

A) Voltage divider bias

B) Base bias

C) Emitter bias

D) Collector bias

24 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the full form of the abbreviation UPS?

A) Unlimited Power Supply

B) Uninterrupted Power Supply

C) Uprooted Power Supply

D) Utility Power Supply

25 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

How much is the regulated output voltage?

A) 6 Volts

B) 12 Volts

C) 18 Volts

D) 22 Volts

26 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the output pin number of switching regulator IC LM 2576?

A) Pin No.2

B) Pin No.3

C) Pin No.4

D) Pin No.5

27 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which circuit is used in SMPS for voltage regulation?

A) Clipping

B) Clamping

C) Switching

D) Amplification

28 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which rectifier circuit used for four diodes?

A) Full wave

B) Half wave

C) Bridge

D) Two half wave

29 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the purpose of diodes in the circuit?

A) Rectify the AC voltage

B) Divide the output voltage

C) Regulate the output voltage

D) Avoid the common load problem

30 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is also known as small signal amplifiers?

A) Low power transistors

B) High power transistors

C) Medium power transistors

D) Very high power transistors

31 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the full form of JFET?

A) Junction Field Effect Transistor

B) Junction Find Effect Transistor

C) Junction File Effect Transistor

D) Junction First Effect Transistor

32 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the output frequency of the pulse setting DC in a two diode fullwave rectifier?

A) Half of the input AC frequency

B) Double the input AC frequency

C) Same frequency of the AC input

D) Three times the input AC frequency

33 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the output pulse frequency of the full wave rectifier with input frequency of 50 Hz?

A) 40 Hz

B) 60 Hz

C) 100 Hz

D) 200 Hz

34 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the process of adding impurities to a pure semiconductor material?

A) Doping

B) Etching

C) Forming

D) Diffusion

35 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

How batteries are rated?

A) Volt

B) Efficiency

C) Ampere hour

D) Wattage hour

36 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the current through the zener diode with full load condition?

A) Zero

B) Minimum

C) Maximum

D) Remains constant

37 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which type of voltage stabilizer is in the block diagram?

A) Servo type

B) Manual type

C) Constant voltage type

D) Automatic control type

38 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the formula used to calculate the current
gain (α) of common base amplifier?

A) IC ÷ IE

B) IE ÷ IC

C) IB ÷ IE

D) IB ÷ IC

39 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the full form of SCR?

A) Serial Control Rectifier

B) Series Controlled Rectifier

C) Silicon Controlled Rectifier

D) Similar Controlled Rectifier

40 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the name of the process of converting AC into DC voltage?

A) Inverting

B) Rectifying

C) Amplifying

D) Demodulating

41 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is having terminals for Anode, Cathode and Gate?

A) Diode

B) SCR

C) Zener diode

D) UJT

42 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

How much is the maximum load current of the negative voltage regulator IC 7912?

A) 1.0 A

B) 1.5 A

C) 2.0 A

D) 0.55 A

43 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the popular application of UJT?

A) Relaxation oscillator

B) Rectifier

C) Amplifier

D) Transformer

44 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the full form of UJT?

A) Uninterrupted Junction Transistor

B) Unregulated Junction Transistor

C) Uni Junction Transistor

D) Universal Junction Transistor

45 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is used for high power applications?

A) SCR

B) BJT

C) UJT

D) FET

46 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

When does the zener diode begins to conduct in the reverse biased condition?

A) When bias voltage reached 0.7 V

B) After the barrier voltage cancelled

C) Voltage across zener reached 0.3 V

D) Voltage across it reached the zener voltage

47 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the electrode marked ‘X’ in the TO-5 transistor pack diagram?

A) Base

B) Screen

C) Emitter

D) Collector

48 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the current through the zener diode under no load condition?

A) Zero

B) Minimum

C) Maximum

D) Remains constant

49 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the name of the circuit diagram?

A) Bridge rectifier

B) Amplifier circuit

C) Regulator circuit

D) Modulator circuit

50 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which impurity is added to pure semiconductor to form ‘N-type’ material?

A) Boron

B) Indium

C) Arsenic

D) Gallium

51 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is the first step followed in troubleshooting of electronic circuit?

A) Thermal test

B) Chemical test

C) Mechanical test

D) Physical and Sensory test

52 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which active components is used for AC to DC converter in rectifier circuit?

A) Transformer

B) Diode

C) Capacitor

D) Resistor

53 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which impurity is added to form P - type semiconductor material?

A) Arsenic

B) Gallium

C) Antimony

D) Phosphorus

54 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the type of converter?

A) Fly back converter

B) DC to AC converter

C) AC to DC converter

D) Forward type converter

55 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What type of transformer is used in automatic voltage stabilizer?

A) Auto transformer

B) Step up transformer

C) Isolation transformer

D) Step down transformer

56 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the peak inverse voltage of germanium diode?

A) 0.3 V

B) 0.7 V

C) 0.8 V

D) 1 V

57 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which method is followed to troubleshoot the problem causing section by the symptom?

A) Step by step method

B) Sensory test method

C) Trial and Error method

D) Logical approach method

58 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is having three terminals for MT1, MT2 and Gate?

A) SCR

B) FET

C) UJT

D) TRIAC

59 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which circuit is used to reduce the ripple in waveform?

A) Amplifier circuit

B) Regulator circuit

C) Oscillator circuit

D) Filter circuit

60 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Why transistors made of silicon is preferred over the germanium semiconductor material?

A) Complex design

B) Higher thermal stability

C) Requires complicated bias arrangement

D) Silicon transistor needs low cut-in- voltage

61 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is stands for TRIAC?

A) TRIode AC semiconductor

B) TRIthis AC conductor

C) TRIthis AC copper

D) TRIode AC conductor

62 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which component filters the ripples in the rectifier circuit?

A) DIAC

B) Diode

C) TRIAC

D) Capacitor

63 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the voltage gain in a transistor if the input voltage in 40 mv and the output voltage in 3.6 V?

A) 45

B) 90

C) 180

D) 270

64 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the current gain of a common - base amplifier?

A) Unity

B) Infinity

C) Greater than 1

D) Less than 1

65 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What type of packaging is generally used to transistors utilized for low power amplification?

A) Metal packaging

B) Plastic packaging

C) Ceramic packaging

D) Plastic packaging with metal heat sinks

66 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

How the negative feedback is called?

A) Regenerative feedback

B) Degenerative feedback

C) Current controlled feedback

D) Voltage controlled feedback

67 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which three terminal voltage regulator IC has adjustable output?

A) LM 100

B) LM 105

C) LM 305

D) LM 317

68 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which parameter is maintained constant in zener diode?

A) Power

B) Current

C) Voltage

D) Resistance

69 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the resultant output voltage of the circuit?

A) Inverted output

B) Regulated output

C) Adjustable output

D) Unregulated output

70 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What type of ripple filter circuit is used for large load current requirements?

A) LC filter

B) RC filter

C) Inductor Input filter

D) Capacitor Input filter

71 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is used for to operate in the reverse breakdown region?

A) Diode

B) Capacitor

C) Zener diode

D) Resistor

72 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is the 3 terminal, negative voltage regulator IC?

A) LM 320

B) LM 340

C) IC 7905

D) IC 7812

73 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the meaning of first letter indicated in the transistor code number BC 107?

A) Germanium material used

B) Silicon material used

C) Antimony material used

D) Indium material used

74 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the function of series regulator IC 2576 pin No.4?

A) Control

B) AC input

C) Feed back

D) Frequency output

75 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the range of specific gravity of lead acid battery, under discharged condition?

A) 1.11 to 1.14

B) 1.14 to 1.17

C) 1.17 to 1.26

D) 1.26 to 1.28

76 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which one is four layer (PNPN) construction?

A) Transistor

B) BJT

C) SCR

D) FET

77 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the current gain of common collector amplifier?

A) Low

B) High

C) Medium

D) Very high

78 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the type of UPS?

A) ON line UPS

B) OFF line UPS

C) Industrial type UPS

D) Line interactive UPS

79 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is two terminal device?

A) TRIAC

B) DIAC

C) SCR

D) UJT

80 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which type of amplifier in used to operate the loud speaker?

A) IF amplifier

B) RF amplifier

C) Power amplifier

D) Voltage amplifier

81 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which IC package consist of 100 to 1000 transistors?

A) Large Scale Integration (LSI)

B) Small Scale Integration (SSI)

C) Medium Scale Integration (MSI)

D) Very Large Scale Integration (VLSI)

82 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

When was SCR invented?

A) 1975

B) 1990

C) 1919

D) 1956

83 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

How many transistors are built inside the Very Large Scale Integration (VLSI) IC package?

A) 1000 and above

B) 1 to 10 transistors

C) 10 to 100 transistors

D) 100 to 1000 transistors

84 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the name of servo voltage stabilizer part marked ‘X’?

A) Servo motor

B) Motor power control

C) Isolation transformer

D) Toroidal auto transformer

85 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the use of transistor?

A) AC to DC

B) Reducing electrical signal

C) Reducing voltage

D) Amplifying small electric / Electronic signals

86 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the meaning of maximum safe reverse voltage across a diode?

A) PIV voltage

B) Knee voltage

C) Break down voltage

D) Reverse break down voltage

87 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the function of capacitor C2 in the voltage regulator?

A) Smooth the ripple content

B) Filter out the pulsations in dc

C) Prevent the setting up of oscillations

D) Improve the transient response of output voltage

88 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Which is voltage controlled device?

A) Bipolar junction transistor

B) Field effect transistor

C) PNP transistor

D) NPN transistor

89 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

What is the full form of FET?

A) Field Effect Transistor

B) Find Effect Transistor

C) File Effect Transistor

D) First Effect Transistor

90 / 90

Category: ICTSM – BS Diode, Rectifier, Filter, Zener diode, Transistor & Amplifiers

Why NPN type of transistors are preferred over the PNP type transistors?

A) NPN has lower switching speed

B) NPN has good bias stability

C) NPN has higher switching speed

D) Low operating voltage

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