Download AppGovt. JobsFree G.K. & Current AffairsScholarshipBlog
Free PracticeContact
📚 Exam by Category
▾
Objective Questions

Latest BTSC ITI Instructor Electronics Mechanic Exam Question (Objective Questions), MCQ in English

Subjects : Technical Subject, General Studies & Current Affairs

Question Bank BTSC ITI Instructor (Electronics Mechanic) Exam - English
Back to Exam

Technical Subject

Question 1Single Answer
Which semiconductor device is primarily used for amplification and switching?
  1. A
    Transformer
  2. B
    Fuse
  3. C
    Inductor
  4. D
    Transistor
Question 2Single Answer
In a bipolar junction transistor, the three terminals are known as?
  1. A
    Emitter, base and collector
  2. B
    Source, drain and gate
  3. C
    Anode, cathode and gate
  4. D
    Input, output and ground
Question 3Single Answer
For a transistor to operate in the active region, its emitter-base junction and collector-base junction are respectively?
  1. A
    Forward biased and reverse biased
  2. B
    Reverse biased and forward biased
  3. C
    Both forward biased
  4. D
    Both reverse biased
Question 4Single Answer
Which transistor configuration has the lowest input resistance?
  1. A
    Common collector
  2. B
    Common emitter
  3. C
    Common base
  4. D
    Darlington pair
Question 5Single Answer
Which transistor configuration provides approximately unity voltage gain with high input impedance?
  1. A
    Common base
  2. B
    Common emitter
  3. C
    Common collector
  4. D
    Cascode
Question 6Single Answer
The phase difference between input and output voltages of a common-emitter amplifier is approximately?
  1. A
    0°
  2. B
    45°
  3. C
    180°
  4. D
    90°
Question 7Single Answer
Which transistor configuration generally provides high voltage gain and high current gain?
  1. A
    Grounded collector
  2. B
    Common base
  3. C
    Common collector
  4. D
    Common emitter
Question 8Single Answer
The current gain of a common-base transistor amplifier is generally?
  1. A
    Much greater than 100
  2. B
    Slightly less than unity
  3. C
    Exactly zero
  4. D
    Infinite
Question 9Single Answer
An RC-coupled amplifier is most commonly used for amplifying?
  1. A
    Audio-frequency signals
  2. B
    DC power
  3. C
    Microwave signals only
  4. D
    High-current pulses only
Question 10Single Answer
The coupling capacitor in an RC-coupled amplifier primarily serves to?
  1. A
    Increase transistor power rating
  2. B
    Block DC and pass AC
  3. C
    Block AC and pass DC
  4. D
    Reduce transistor current gain
Question 11Single Answer
The fall in gain of an RC-coupled amplifier at low frequencies is mainly caused by?
  1. A
    Coupling and bypass capacitors
  2. B
    Transistor saturation only
  3. C
    Collector resistance becoming zero
  4. D
    Increased supply voltage
Question 12Single Answer
A Darlington pair consists essentially of?
  1. A
    Two transistors connected to provide very high current gain
  2. B
    Two diodes connected in series
  3. C
    Two op-amps connected as oscillators
  4. D
    Two FETs connected as rectifiers
Question 13Single Answer
The overall current gain of a Darlington pair is approximately equal to?
  1. A
    Difference of individual current gains
  2. B
    Reciprocal of individual gains
  3. C
    Product of individual current gains
  4. D
    Unity irrespective of transistor gains
Question 14Single Answer
One important characteristic of a Darlington amplifier is its?
  1. A
    Very low input impedance
  2. B
    High reverse leakage only
  3. C
    Zero current gain
  4. D
    Very high current gain
Question 15Single Answer
An ideal operational amplifier has an open-loop voltage gain that is considered?
  1. A
    Zero
  2. B
    Infinite
  3. C
    Unity
  4. D
    Less than unity
Question 16Single Answer
The ideal input impedance of an operational amplifier is?
  1. A
    Infinite
  2. B
    Very low
  3. C
    Zero
  4. D
    Equal to output impedance
Question 17Single Answer
The ideal output impedance of an operational amplifier is?
  1. A
    Very high
  2. B
    Infinite
  3. C
    Equal to input impedance
  4. D
    Zero
Question 18Single Answer
In an inverting op-amp amplifier, the output voltage is phase shifted from the input by?
  1. A
    30°
  2. B
    90°
  3. C
    180°
  4. D
    270°
Question 19Single Answer
The input signal in a basic inverting amplifier is applied through a resistor to the?
  1. A
    Non-inverting terminal
  2. B
    Output terminal
  3. C
    Positive supply terminal
  4. D
    Inverting terminal
Question 20Single Answer
In a non-inverting op-amp amplifier, the output signal is?
  1. A
    180° out of phase with input
  2. B
    Independent of input
  3. C
    Always zero
  4. D
    In phase with input
Question 21Single Answer
A summing amplifier is used to?
  1. A
    Compare two frequencies
  2. B
    Generate clock pulses
  3. C
    Convert digital data into serial data
  4. D
    Combine several input signals algebraically
Question 22Single Answer
Which op-amp circuit detects the instant when an input signal crosses zero voltage?
  1. A
    Zero crossing detector
  2. B
    Summing amplifier
  3. C
    Integrator
  4. D
    Differential amplifier
Question 23Single Answer
A zero crossing detector is essentially an op-amp operated as a?
  1. A
    Power amplifier
  2. B
    Comparator
  3. C
    Low-pass filter
  4. D
    Current regulator
Question 24Single Answer
An instrumentation amplifier is particularly suitable for amplifying?
  1. A
    Large power signals
  2. B
    Digital clock pulses only
  3. C
    Small differential signals in the presence of common-mode noise
  4. D
    RF carrier signals only
Question 25Single Answer
A desirable characteristic of an instrumentation amplifier is?
  1. A
    High common-mode rejection ratio
  2. B
    Low common-mode rejection ratio
  3. C
    Zero input impedance
  4. D
    Very high output impedance
Question 26Single Answer
The oscillator that commonly uses an RC phase-shift network to satisfy the phase condition for oscillation is called?
  1. A
    Hartley oscillator
  2. B
    RC phase-shift oscillator
  3. C
    Crystal oscillator
  4. D
    Blocking oscillator
Question 27Single Answer
A Wien-bridge oscillator is commonly used for generating?
  1. A
    Rectangular DC levels only
  2. B
    Low-distortion sinusoidal signals
  3. C
    Random noise signals
  4. D
    High-current DC output
Question 28Single Answer
The frequency-determining network in a Wien-bridge oscillator mainly contains?
  1. A
    Inductors and transformers
  2. B
    Resistors and capacitors
  3. C
    Zener diodes only
  4. D
    Transistors and relays
Question 29Single Answer
According to the Barkhausen criterion, the magnitude of loop gain at the oscillation frequency should be?
  1. A
    Zero
  2. B
    One
  3. C
    Less than zero
  4. D
    Infinite
Question 30Single Answer
Which DAC architecture uses only two resistance values regardless of the number of input bits?
  1. A
    Weighted-resistor DAC
  2. B
    Dual-slope DAC
  3. C
    Flash DAC
  4. D
    R-2R ladder DAC
Question 31Single Answer
A major advantage of an R-2R ladder DAC over a binary weighted-resistor DAC is?
  1. A
    It requires no resistors
  2. B
    It produces only digital output
  3. C
    It uses only two resistor values
  4. D
    It requires an oscillator
Question 32Single Answer
In a binary weighted-resistor DAC, the resistor values are selected according to?
  1. A
    Random resistance values
  2. B
    Binary weighting of input bits
  3. C
    Equal current through every branch
  4. D
    Transistor beta values
Question 33Single Answer
In an op-amp based DAC, the op-amp is commonly used as a?
  1. A
    Voltage regulator
  2. B
    Schmitt trigger only
  3. C
    Summing amplifier
  4. D
    Power rectifier
Question 34Single Answer
A 555 timer operating in astable mode has?
  1. A
    No stable state
  2. B
    One stable state
  3. C
    Two stable states
  4. D
    Three stable states
Question 35Single Answer
A 555 timer in monostable mode has?
  1. A
    No stable state
  2. B
    Two stable states
  3. C
    One stable state
  4. D
    Four stable states
Question 36Single Answer
An astable multivibrator is commonly used as a?
  1. A
    Full-wave rectifier
  2. B
    DC transformer
  3. C
    Continuous pulse generator
  4. D
    Voltage stabilizer
Question 37Single Answer
A monostable multivibrator is also commonly called a?
  1. A
    Free-running oscillator
  2. B
    Frequency divider only
  3. C
    Bistable latch
  4. D
    One-shot multivibrator
Question 38Single Answer
Which pin of a standard 555 timer is used for applying a triggering pulse?
  1. A
    Pin 2
  2. B
    Pin 1
  3. C
    Pin 5
  4. D
    Pin 8
Question 39Single Answer
The threshold input of a standard 555 timer is connected to?
  1. A
    Pin 2
  2. B
    Pin 6
  3. C
    Pin 4
  4. D
    Pin 7
Question 40Single Answer
Which 555 timer pin is connected to the internal discharge transistor?
  1. A
    Pin 7
  2. B
    Pin 5
  3. C
    Pin 3
  4. D
    Pin 8
Question 41Single Answer
Which logic gate produces HIGH output only when all its inputs are HIGH?
  1. A
    OR
  2. B
    NOR
  3. C
    XOR
  4. D
    AND
Question 42Single Answer
Which gate produces a LOW output only when all of its inputs are LOW?
  1. A
    XNOR
  2. B
    NAND
  3. C
    OR
  4. D
    AND
Question 43Single Answer
Which logic gate is known as a universal gate?
  1. A
    XOR
  2. B
    NAND
  3. C
    AND
  4. D
    Buffer
Question 44Single Answer
Which other logic gate, besides NAND, is considered a universal gate?
  1. A
    XOR
  2. B
    NOR
  3. C
    XNOR
  4. D
    NOT
Question 45Single Answer
An XOR gate produces HIGH output when its two inputs are?
  1. A
    Both LOW only
  2. B
    Both HIGH only
  3. C
    Permanently grounded
  4. D
    Different from each other
Question 46Single Answer
A half adder has how many input variables for adding two single binary digits?
  1. A
    One
  2. B
    Two
  3. C
    Three
  4. D
    Four
Question 47Single Answer
The two outputs of a half adder are called?
  1. A
    Clock and data
  2. B
    Set and reset
  3. C
    Sum and carry
  4. D
    Enable and disable
Question 48Single Answer
Which gates can directly implement the sum and carry functions of a half adder?
  1. A
    XOR and AND
  2. B
    NOR and NOT
  3. C
    OR and NAND
  4. D
    XNOR and OR
Question 49Single Answer
A full adder differs from a half adder because it includes?
  1. A
    A clock input
  2. B
    An enable input only
  3. C
    A carry input
  4. D
    An analog input
Question 50Single Answer
A flip-flop is fundamentally used to store?
  1. A
    One decimal digit
  2. B
    One bit of binary information
  3. C
    One analog waveform
  4. D
    Eight bytes simultaneously
Important Questions Package

BTSC ITI Instructor Electronics Mechanic Exam Online Question Bank Package

Buy BTSC ITI Instructor Electronics Mechanic Important Questions, MCQ, question answer in Hindi & English. It will help you to score high marks in BTSC ITI Instructor Electronics Mechanic question bank 2026 in Online, PDF & Print study material.

+ Free Monthly Current Affairs, GK & more PDF Download
Sr.Package NameAmount
1.BTSC ITI Instructor (Electronics Mechanic) Exam - Hindi
Description : 1000 Question with Answer.
₹101 [₹500]
2.BTSC ITI Instructor (Electronics Mechanic) Exam - Hindi
Description : 2000 Question with Answer.
₹151 [₹500]
3.BTSC ITI Instructor (Electronics Mechanic) Exam - English
Description : 1000 Question with Answer.
₹101 [₹500]
4.BTSC ITI Instructor (Electronics Mechanic) Exam - English
Description : 2000 Question with Answer.
₹151 [₹500]
5.BTSC ITI Instructor (Electronics Mechanic) Exam - Hindi (Old)
Description : 1000 Question with Answer.
₹101 [₹500]
6.BTSC ITI Instructor (Electronics Mechanic) Exam - Hindi (Old)
Description : 4000 Question with Answer.
₹201 [₹500]
7.BTSC ITI Instructor (Electronics Mechanic) Exam - English (Old)
Description : 1000 Question with Answer.
₹101 [₹500]
8.BTSC ITI Instructor (Electronics Mechanic) Exam - English (Old)
Description : 2000 Question with Answer.
₹151 [₹500]
Back to Exam
Question for BTSC ITI Instructor (Electronics Mechanic) 2026 - Quiz / Questions / MCQ - Toppersexam