ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Resistance increases with temperature in:
A)
Metals
B)
Semiconductors
C)
Insulators
D)
Liquids
Option A is correct: Metals.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Frictional losses convert energy mainly into:
A)
Heat energy
B)
Light energy
C)
Sound energy
D)
Electrical energy
Option C is correct: Sound energy.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
If the length of a wire is doubled, its resistance becomes:
A)
Half
B)
Double
C)
Same
D)
Zero
Option B is correct: Double.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Vulcanization improves rubber by increasing:
A)
Elasticity and strength
B)
Softness
C)
Brittleness
D)
Weight
Option B is correct: Softness.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Tempering is carried out after:
A)
Annealing
B)
Quenching
C)
Normalizing
D)
Casting
Option B is correct: Quenching.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Kinetic friction is:
A)
Greater than static friction
B)
Less than static friction
C)
Equal to static friction
D)
Zero
Option A is correct: Greater than static friction.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which material is most suitable for making electrical insulators?
A)
Copper
B)
Aluminium
C)
Rubber
D)
Iron
Option B is correct: Aluminium.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Indicated horsepower refers to:
A)
Power inside engine cylinder
B)
Output power
C)
Power loss
D)
Electrical power
Option D is correct: Electrical power.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Acceleration is defined as:
A)
Change in displacement
B)
Rate of change of velocity
C)
Change in force
D)
Change in momentum
Option B is correct: Rate of change of velocity.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Minimum force required to move a 10 kg block on a rough surface (ì = 0.2) is:
A)
10 N
B)
98 N
C)
19.6 N
D)
2 N
Option B is correct: 98 N.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
In circular motion, velocity:
A)
is constant
B)
is zero
C)
changes direction continuously
D)
changes magnitude only
Option C is correct: changes direction continuously.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
If displacement doubles, work done becomes:
A)
Half
B)
Same
C)
Zero
D)
Double
Option D is correct: Double.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Negative work is done when:
A)
Force is zero
B)
Displacement is zero
C)
Force and displacement are same
D)
Force opposes displacement
Option B is correct: Displacement is zero.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Efficiency of a machine is given by:
A)
Load / Effort
B)
Mechanical advantage × velocity ratio
C)
Mechanical advantage/velocity ratio
D)
Velocity ratio/mechanical advantage
Option C is correct: Mechanical advantage/velocity ratio.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
If mechanical advantage is less than velocity ratio, the machine has:
A)
No friction
B)
Friction present
C)
Ideal condition
D)
Infinite work
Option B is correct: Friction present.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which material property allows metals to be hammered into thin sheets?
A)
Ductility
B)
Hardness
C)
Toughness
D)
Malleability
Option B is correct: Hardness.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Power is maximum when:
A)
Work is large and time is small
B)
Time is large
C)
Work is small
D)
Time is infinite
Option A is correct: Work is large and time is small.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Work done is zero when:
A)
Force is perpendicular to displacement
B)
Force is parallel to displacement
C)
Displacement is maximum
D)
Force is maximum
Option D is correct: Force is maximum.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Conductivity is the reciprocal of:
A)
Resistance
B)
Current
C)
Resistivity
D)
Voltage
Option C is correct: Resistivity.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Work–energy theorem states that work done equals:
A)
Change in momentum
B)
Change in force
C)
Change in velocity
D)
Change in kinetic energy
Option D is correct: Change in kinetic energy.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
In which lever does the direction of force change?
A)
First-class lever
B)
Second-class lever
C)
Third-class lever
D)
All of these
Option A is correct: First-class lever.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which property indicates resistance to permanent deformation?
A)
Elasticity
B)
Toughness
C)
Strength
D)
Conductivity
Option A is correct: Elasticity.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Which lever is mainly used to gain speed?
A)
First-class
B)
Second-class
C)
Third-class
D)
Compound
Option B is correct: Second-class.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
A perfect black body absorbs:
A)
Some radiation
B)
No radiation
C)
All radiation
D)
Only visible light
Option C is correct: All radiation.
ITI Instructor • 2026 • Paper-IV (Technical Paper-II)
Thermal conductivity is the:
A)
Ability to store heat
B)
Ability to transfer heat
C)
Ability to reflect heat
D)
Ability to absorb light
Option B is correct: Ability to transfer heat.
