ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Hardness of steel increases with:
A)
Less carbon
B)
More aluminium
C)
Less iron
D)
More carbon
Option B is correct: More aluminium.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Seasoning of timber improves:
A)
Weight
B)
Strength and durability
C)
Color
D)
Shape
Option D is correct: Shape.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
A machine does 200 J work in 20 s. Power is:
A)
5 W
B)
20 W
C)
10 W
D)
40 W
Option C is correct: 10 W.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
A force of 10 N acts on a body at an angle of 60° to the horizontal. If the displacement is horizontal, what is the effective force doing work?
A)
10 N
B)
5 N
C)
8.66 N
D)
0 N
Option D is correct: 0 N.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Specific heat is defined as:
A)
Heat required to raise temperature of unit mass by 1°C
B)
Total heat
C)
Temperature
D)
Energy
Option A is correct: Heat required to raise temperature of unit mass by 1°C.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Cast iron is commonly used for:
A)
Pipes
B)
Wires
C)
Springs
D)
Blades
Option A is correct: Pipes.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which of the following reduces friction?
A)
Increasing roughness
B)
Adding lubricant
C)
Increasing load
D)
Using irregular surfaces
Option B is correct: Adding lubricant.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Angle of repose is equal to:
A)
Angle of friction
B)
90°
C)
0°
D)
45°
Option A is correct: Angle of friction.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which type of load is most likely to cause sudden failure in materials?
A)
Gradual load
B)
Static load
C)
Impact load
D)
Uniform load
Option C is correct: Impact load.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which is the correct relation for electric power?
A)
P = V²R
B)
P = I/R
C)
P = V/R²
D)
P = I²R
Option D is correct: P = I²R.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
If angle of friction is zero, the surface is:
A)
Rough
B)
Smooth
C)
Sticky
D)
Wet
Option B is correct: Smooth.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
The freezing point of water in Fahrenheit scale is:
A)
0°F
B)
32°F
C)
100°F
D)
212°F
Option B is correct: 32°F.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Copper is classified as a:
A)
Ferrous metal
B)
Non-ferrous metal
C)
Alloy
D)
Steel
Option B is correct: Non-ferrous metal.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Radiation travels fastest in:
A)
Solid
B)
Liquid
C)
Gas
D)
Vacuum
Option D is correct: Vacuum.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Work is maximum when angle between force and displacement is:
A)
90°
B)
180°
C)
45°
D)
0°
Option D is correct: 0°.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
The slope of a velocity–time graph gives:
A)
Displacement
B)
Speed
C)
Acceleration
D)
Force
Option C is correct: Acceleration.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
If the angle of repose is 45°, the coefficient of friction is:
A)
1
B)
0.5
C)
2
D)
0
Option B is correct: 0.5.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
A machine has input work 500 J and output work 400 J. Efficiency is:
A)
60%
B)
75%
C)
80%
D)
90%
Option C is correct: 80%.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which substance has highest specific heat?
A)
Copper
B)
Water
C)
Iron
D)
Aluminium
Option B is correct: Water.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Ohm’s law is valid when:
A)
Temperature changes
B)
Voltage is zero
C)
Physical conditions remain constant
D)
Current is zero
Option C is correct: Physical conditions remain constant.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Horsepower is commonly used to measure:
A)
Force
B)
Energy
C)
Work
D)
Power of engines
Option D is correct: Power of engines.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Boiling point decreases when:
A)
Pressure decreases
B)
Pressure increases
C)
Temperature increases
D)
Density increases
Option A is correct: Pressure decreases.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Fatigue cracks usually start at:
A)
Center
B)
Surface
C)
Core
D)
Boundary
Option C is correct: Core.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Nickel addition in steel improves:
A)
Hardness only
B)
Brittleness
C)
Toughness
D)
Density
Option A is correct: Hardness only.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Work done by gravity during upward motion is:
A)
Positive
B)
Zero
C)
Infinite
D)
Negative
Option A is correct: Positive.
