ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
What type of torque is required to bring the pointer of an instrument to its final position?
A)
Deflecting torque
B)
Controlling torque
C)
Damping torque
D)
Operating torque
Correct answer: B — Controlling torque
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Over-discharging of a battery leads to:
A)
High voltage
B)
Damage to plates
C)
Increased efficiency
D)
Reduced resistance
Correct answer: B — Damage to plates
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Kirchhoff’s Current Law (KCL) is based on the law of conservation of:
A)
Energy
B)
Charge
C)
Mass
D)
Momentum
Option D is correct: Momentum.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which precaution is important for battery maintenance?
A)
Overcharging
B)
Deep discharge
C)
Keeping proper electrolyte level
D)
Short-circuiting
Correct answer: B — Deep discharge
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which tool is used for cutting threads on the inside of a hole?
A)
Die
B)
Tap
C)
Reamer
D)
Drill bit
Option A is correct: Die.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Copper is a:
A)
Insulator
B)
Semiconductor
C)
Conductor
D)
Alloy
Correct answer: C — Conductor
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which of the following is NOT a component of a battery?
A)
Electrolyte
B)
Electrodes
C)
Separator
D)
Transformer
Correct answer: D — Transformer
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
What is the function of the metallic sheath in a cable?
A)
To provide mechanical strength
B)
To prevent moisture from entering the insulation
C)
To prevent corrosion
D)
To prevent termite attack
Option B is correct: To prevent moisture from entering the insulation.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Silicon is a:
A)
Conductor
B)
Insulator
C)
Semiconductor
D)
Alloy
Option B is correct: Insulator.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
What is the first aid for minor burns?
A)
Apply ice directly
B)
Apply oil
C)
Cooling with cool running water
D)
Cover with cloth
Option C is correct: Cooling with cool running water.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
The direct deflection method is typically used to measure:
A)
Low resistance
B)
Medium resistance
C)
High resistance
D)
None of the above
Option B is correct: Medium resistance.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
The insulation resistance of a 100-meter long cable is measured. If the cable is reduced to 50 meters, the insulation resistance will:
A)
Reduce to half
B)
Increase
C)
Remain same
D)
Become zero
Option D is correct: Become zero.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which of the following is a personal safety measure in a factory?
A)
Ignoring PPE
B)
Wearing proper protective equipment
C)
Running in work area
D)
Using damaged tools
Correct answer: B — Wearing proper protective equipment
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Electrical shock depends on:
A)
Voltage
B)
Current
C)
Resistance
D)
Power
Option D is correct: Power.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
The sensitivity of an instrument is defined as:
A)
Output/input
B)
Deflection per unit input
C)
Input/output
D)
Resistance
Correct answer: B — Deflection per unit input
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which instrument is used to measure energy in a circuit?
A)
Wattmeter
B)
Ammeter
C)
Voltmeter
D)
Energy meter (kWh meter)
Correct answer: D — Energy meter (kWh meter)
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
A coil of insulated wire is connected to a galvanometer. If a magnet is moved towards it, the pointer deflects because:
A)
The coil acts like a magnet
B)
Induced current is produced
C)
Magnetic field acts on the galvanometer
D)
Resistance increases
Correct answer: B — Induced current is produced
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which joint is commonly used for joining two straight wires?
A)
Western Union joint
B)
Britannia joint
C)
T-joint
D)
Rat-tail joint
Option A is correct: Western Union joint.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Resistance if power 100W, current 5A:
A)
4V
B)
5V
C)
2V
D)
10V
Option C is correct: 2V.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
The insulation resistance of an underground cable is:
A)
Directly proportional to its length
B)
Inversely proportional to its length
C)
Independent of its length
D)
None of the above
Option B is correct: Inversely proportional to its length.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Earth resistance is measured using:
A)
Voltmeter
B)
Ammeter
C)
Earth tester (Megger)
D)
Wattmeter
Correct answer: C — Earth tester (Megger)
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
The voltage of a fully charged lead-acid cell is about:
A)
1.2 V
B)
1.5 V
C)
2.1 V
D)
12 V
Correct answer: C — 2.1 V
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
In a purely resistive AC circuit:
A)
Current leads the voltage by
B)
Current lags behind the voltage by
C)
Current is in phase with the voltage.
D)
Current leads the voltage by
Correct answer: C — Current is in phase with the voltage.
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which application requires a capacitor with high capacitance and low self-discharge?
A)
High-frequency filter
B)
Tuning circuit
C)
Energy storage (Supercapacitor)
D)
AC coupling
Correct answer: C — Energy storage (Supercapacitor)
ITI Instructor • 2026 • Paper-III (Electrician - Technical Paper-I)
Which alloy is commonly used for soldering?
A)
Tin-lead
B)
Copper-zinc
C)
Aluminum-magnesium
D)
Iron-carbon
Option D is correct: Iron-carbon.
