ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
A voltage stabilizer is used to:
A)
Increase current
B)
Reduce power
C)
Maintain constant output voltage
D)
Store energy
Option B is correct: Reduce power.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Which component is used as a switch in power electronics?
A)
Resistor
B)
Diode
C)
SCR
D)
Capacitor
Option A is correct: Resistor.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
An inverter converts:
A)
AC to DC
B)
AC to AC
C)
DC to AC
D)
DC to DC
Option C is correct: DC to AC.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Which device is used in stabilizers?
A)
Motor
B)
Generator
C)
Autotransformer
D)
Battery
Option C is correct: Autotransformer.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
SCR stands for:
A)
Silicon Control Resistor
B)
Silicon Controlled Rectifier
C)
Series Control Rectifier
D)
Switching Control Relay
Option B is correct: Silicon Controlled Rectifier.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Voltage regulation of transformer is:
A)
Change in current
B)
Change in power
C)
Change in secondary voltage from no-load to full-load
D)
Change in frequency
Option D is correct: Change in frequency.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Battery charger works on:
A)
AC to AC
B)
DC to AC
C)
AC to DC conversion
D)
Mechanical energy
Option B is correct: DC to AC.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Which is a control element?
A)
Transformer
B)
Generator
C)
Relay
D)
Battery
Option C is correct: Relay.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Armature reaction affects:
A)
Voltage only
B)
Current only
C)
Flux distribution
D)
Resistance
Correct answer: C — Flux distribution
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
UPS stands for:
A)
Universal Power System
B)
Uninterruptible Power Supply
C)
Unit Power Source
D)
Unlimited Power System
Option B is correct: Uninterruptible Power Supply.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Iron loss consists of:
A)
Friction loss
B)
Hysteresis and eddy current loss
C)
Heat loss
D)
Leakage loss
Option C is correct: Heat loss.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Fuse is provided in domestic circuits to:
A)
Increase voltage
B)
Reduce current
C)
Protect against overcurrent
D)
Store energy
Correct answer: C — Protect against overcurrent
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Which device converts AC to DC?
A)
Inverter
B)
Rectifier
C)
Transformer
D)
Motor
Option B is correct: Rectifier.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
If coil span is 7 slots and pole pitch is 9 slots, winding is:
A)
Full pitch
B)
Short pitch
C)
Over pitch
D)
Long pitch
Correct answer: B — Short pitch
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
A DC generator produces 200 V at 1000 rpm. At 2000 rpm, EMF is:
A)
200 V
B)
300 V
C)
400 V
D)
600 V
With flux constant, generated EMF is proportional to speed, so 200 × 2000/1000 = 400 V.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
IE rules are used for:
A)
Increasing voltage
B)
Reducing cost
C)
Ensuring safety in electrical installations
D)
Measuring current
Correct answer: C — Ensuring safety in electrical installations
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Auto transformer has:
A)
Two windings
B)
Single winding
C)
No winding
D)
Three windings
Option C is correct: No winding.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
DIAC is used for:
A)
Rectification
B)
Amplification
C)
Triggering TRIAC
D)
Heating
Option A is correct: Rectification.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Thermistor resistance varies with:
A)
Voltage
B)
Current
C)
Temperature
D)
Power
Option C is correct: Temperature.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Which DC motor has high starting torque?
A)
Shunt motor
B)
Series motor
C)
Compound motor
D)
Synchronous motor
Correct answer: B — Series motor
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Open circuit test is used to find:
A)
Copper loss
B)
Core loss
C)
Efficiency
D)
Regulation
Option B is correct: Core loss.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Distribution system delivers power to:
A)
Generators
B)
Transformers
C)
Consumers
D)
Transmission lines
Correct answer: C — Consumers
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
A starter is used in motors to:
A)
Increase speed
B)
Limit starting current
C)
Reduce voltage
D)
Store energy
Option C is correct: Reduce voltage.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Copper loss in transformer depends on:
A)
Registance
B)
Frequency
C)
Load current
D)
Core size
Option D is correct: Core size.
ITI Instructor • 2026 • Paper-IV (Electrician - Technical Paper-II)
Buchholz relay is used in:
A)
Motors
B)
Generators
C)
Transformers
D)
Batteries
Option B is correct: Generators.
