Free Printable Mechanical Engineering Quiz

1.

Mechanical advantage is less than velocity ratio in:

a)

Ideal machines

b)

Actual machines

c)

Reversible machines

d)

None

2.

Centre of gravity of a solid cone is at a distance of:

a)

h/2

b)

h/3

c)

h/4

d)

h/6

3.

Shape taken by a loaded cable is:

a)

Circle

b)

Parabola

c)

Hyperbola

d)

Ellipse

4.

The unit of pressure in SI is:

a)

N

b)

kg/cm

c)

Pascal

d)

Dyne

5.

The angle of friction is:

a)

Ratio of friction and normal

b)

Angle between reaction and resultant

c)

Friction × area

d)

None

6.

Energy stored in stretched spring is:

a)

Kinetic energy

b)

Strain energy

c)

Heat energy

d)

None

7.

Unit of moment is:

a)

N

b)

N-m

c)

Watt

d)

kg

8.

Dynamic friction compared to static friction is:

a)

Same

b)

Less

c)

More

d)

Random

9.

The law of moments states:

a)

Sum of forces = 0

b)

Sum of moments = 0

c)

Sum of mass = 0

d)

Sum of velocity = 0

10.

C.G. of semicircle from base is at:

a)

4r/3π

b)

3r/8

c)

2r/3

d)

r/2

11.

Newton's third law applies to:

a)

Energy

b)

Mass

c)

Action-reaction

d)

Displacement

12.

In an ideal machine, mechanical advantage =

a)

Less than velocity ratio

b)

Equal to velocity ratio

c)

Greater than velocity ratio

d)

None

13.

Mass moment of inertia depends on:

a)

Axis

b)

Mass

c)

Shape

d)

All of these

14.

Flywheel stores:

a)

Potential energy

b)

Rotational kinetic energy

c)

Strain energy

d)

None

15.

Radius of gyration is:

a)

√(I/m)

b)

I/m²

c)

m²/I

d)

None

16.

Law of conservation of momentum states:

a)

Force = constant

b)

Energy = constant

c)

Momentum = constant

d)

Mass = zero

17.

Scalar quantity among these:

a)

Force

b)

Velocity

c)

Work

d)

Momentum

18.

Moment of inertia of circular section about its diameter is:

a)

πd³/32

b)

πd⁴/64

c)

πd²/8

d)

πd/16

19.

Centrifugal force acts:

a)

Towards center

b)

Away from center

c)

Perpendicular

d)

Zero

20.

Centre of percussion is:

a)

C.G.

b)

Point of suspension

c)

Rotation axis application point

d)

None

21.

Joule is unit of:

a)

Power

b)

Work

c)

Pressure

d)

Force

22.

Maximum height of projectile is proportional to:

a)

sinθ

b)

sin²θ

c)

cosθ

d)

cos²θ

23.

SI unit of power is:

a)

Joule

b)

Watt

c)

Dyne

d)

Pascal

24.

Law of polygon of forces states:

a)

Two forces polygon

b)

Resultant closes polygon

c)

Equal forces

d)

Zero

25.

Friction after motion starts is called:

a)

Limiting friction

b)

Static friction

c)

Dynamic friction

d)

None

26.

Moment of inertia of solid sphere about diameter:

a)

2/5 mr²

b)

2/3 mr²

c)

3/5 mr²

d)

mr²/2

27.

Limiting force of friction depends on:

a)

Contact area

b)

Normal reaction

c)

Surface roughness

d)

Shape

28.

Principle of transmissibility applies to:

a)

Distance

b)

Line of action

c)

Shape

d)

Energy

29.

Newton's second law is based on:

a)

F = ma

b)

F = mv

c)

F = m/g

d)

F = mg

30.

Simple pendulum period is:

a)

√(l/g)

b)

√(g/l)

c)

l²/g

d)

g²/l

31.

Radius of gyration (k) is given by:

a)

√(I/M)

b)

I×M

c)

I/M²

d)

M/I

32.

Unit of angular velocity:

a)

m/s

b)

m/min

c)

rad/s

d)

N-m

33.

In equilibrium, algebraic sum of moments is:

a)

Maximum

b)

Minimum

c)

Zero

d)

Infinite

34.

A machine's efficiency is:

a)

MA × VR

b)

MA/VR

c)

VR/MA

d)

1/MA × VR

35.

Law of conservation of energy:

a)

Energy created

b)

Energy destroyed

c)

Energy neither created nor destroyed

d)

Energy constant only in motion

36.

Scalar quantity among following:

a)

Velocity

b)

Acceleration

c)

Energy

d)

Force

37.

Centripetal force is directed:

a)

Outward

b)

Toward center

c)

Tangent

d)

Parallel

38.

Impact between two elastic bodies:

a)

Energy lost

b)

Energy conserved

c)

Momentum lost

d)

Kinetic energy zero

39.

Coplanar forces act in:

a)

Different planes

b)

Same plane

c)

Along Z-axis

d)

In circle

40.

For maximum projectile range, angle is:

a)

30°

b)

60°

c)

45°

d)

90°

41.

Moment of inertia unit:

a)

kg

b)

kg-m

c)

kg-m²

d)

N-m

42.

In projectile, path is:

a)

Straight line

b)

Parabola

c)

Circle

d)

Ellipse

43.

D'Alembert's principle transforms dynamic problem into:

a)

Rotational

b)

Static

c)

Vibrational

d)

Linear

44.

Friction depends upon:

a)

Area of contact

b)

Nature of surfaces

c)

Speed

d)

Mass only

45.

Mechanical advantage is ratio of:

a)

Load lifted / effort applied

b)

Effort / load

c)

Load × effort

d)

Effort + load

46.

When two equal and opposite forces act away:

a)

Translation

b)

Couple

c)

Vibration

d)

Rotational inertia

47.

Kinetic energy of rotation:

a)

½mv²

b)

½Iω²

c)

mgh

d)

F×d

48.

For a body in motion, inertia:

a)

Supports acceleration

b)

Resists change

c)

Multiplies speed

d)

Adds mass

49.

Power unit in SI:

a)

Joule

b)

Watt

c)

Dyne

d)

Pa

50.

Power unit in SI:

a)

Joule

b)

Watt

c)

Dyne

d)

Pascal

51.

Friction is maximum:

a)

At start

b)

Limiting state

c)

During motion

d)

When stopped

52.

Angular momentum conservation applies if:

a)

Torque is zero

b)

Force is zero

c)

Speed is constant

d)

Mass is zero

53.

Flywheel stores:

a)

Rotational kinetic energy

b)

Pressure energy

c)

Heat

d)

Light energy

54.

Pulley works by giving:

a)

Speed

b)

Distance

c)

Force advantage

d)

Time saving

55.

Torque produces:

a)

Translation

b)

Rotation

c)

Friction

d)

Deformation

56.

Newton's 2nd law:

a)

F = ma

b)

F = mv

c)

F = mg

d)

F = v/m

57.

Coefficient of friction is:

a)

μ = sinθ

b)

μ = tanθ

c)

μ = cosθ

d)

μ = θ/r

58.

Couple produces:

a)

Force

b)

Rotation

c)

Vibration

d)

Translation

59.

SI unit of pressure:

a)

Watt

b)

Joule

c)

Pascal

d)

Newton

60.

Power is rate of:

a)

Doing work

b)

Energy loss

c)

Force application

d)

Mass increase

61.

Work done when force is zero:

a)

Zero

b)

Infinite

c)

Maximum

d)

Minimum

62.

When force applied but no displacement:

a)

Work done is zero

b)

Work is maximum

c)

Power is maximum

d)

Energy stored

63.

Energy unit in SI:

a)

Newton

b)

Watt

c)

Joule

d)

Pascal

64.

Mechanical advantage is always:

a)

Less than velocity ratio

b)

Equal to VR

c)

More than VR

d)

Zero

65.

Dynamic friction is:

a)

More than static

b)

Less than static

c)

Equal to static

d)

Double static

66.

Lami's theorem applies for:

a)

Two forces

b)

Three concurrent forces

c)

Four forces

d)

Parallel forces

67.

Maximum efficiency of machine is:

a)

100%

b)

80%

c)

70%

d)

60%

68.

Projectile angle for max range:

a)

30°

b)

90°

c)

45°

d)

60°

69.

Flywheel resists:

a)

Friction

b)

Speed

c)

Speed fluctuation

d)

Energy loss

70.

Simple pendulum's period depends on:

a)

Mass

b)

Length

c)

Amplitude

d)

Weight

71.

Torque is product of:

a)

Force and radius

b)

Mass and acceleration

c)

Energy and time

d)

Velocity and area

72.

Newton's first law defines:

a)

Force

b)

Inertia

c)

Energy

d)

Mass

73.

SI unit of angular velocity:

a)

N-m

b)

rad/s

c)

m/s

d)

kg-m²

74.

Kinetic energy of rotating body:

a)

½mv²

b)

½Iω²

c)

mgh

d)

F×d

75.

Work unit:

a)

N

b)

Joule

c)

Watt

d)

Pascal

76.

Scalar quantity is:

a)

Force

b)

Acceleration

c)

Energy

d)

Velocity

77.

Power SI unit:

a)

Joule

b)

Watt

c)

Dyne

d)

Newton

78.

Friction depends on:

a)

Area

b)

Surface nature

c)

Speed

d)

Volume

79.

Maximum projectile range at angle:

a)

30°

b)

45°

c)

60°

d)

90°

80.

When force zero, work is:

a)

Zero

b)

Max

c)

Min

d)

Constant

81.

Angular velocity unit:

a)

m/s

b)

N-m

c)

rad/s

d)

Watt

82.

Conservation of momentum applies:

a)

Force zero

b)

Energy constant

c)

Mass changes

d)

Acceleration zero

83.

Newton's third law:

a)

Action only

b)

Action-reaction

c)

Reaction only

d)

Mass

84.

Friction maximum at:

a)

Limiting condition

b)

Motion

c)

Rest

d)

None

85.

SI unit of force:

a)

Dyne

b)

Newton

c)

Joule

d)

Pascal

86.

Work done zero when:

a)

Force zero

b)

Displacement max

c)

Energy lost

d)

Pressure zero

87.

Energy stored in flywheel is:

a)

Rotational kinetic energy

b)

Heat

c)

Potential energy

d)

Pressure

88.

Machine is ideal if efficiency is:

a)

90%

b)

80%

c)

100%

d)

50%

89.

Torque is:

a)

Force

b)

Force × distance

c)

Mass × velocity

d)

Pressure × area

90.

Centre of gravity lies:

a)

Above body

b)

Below body

c)

At balance point

d)

At side

91.

Newton's second law:

a)

F = ma

b)

F = mv

c)

F = m/a

d)

F = v/m

92.

Work unit:

a)

N

b)

Joule

c)

Watt

d)

Pascal

93.

Angular acceleration unit:

a)

N-m

b)

m/s

c)

rad/s²

d)

kg-m²

94.

Friction force direction:

a)

Along motion

b)

Opposite to motion

c)

Perpendicular

d)

Zero

95.

Kinetic friction:

a)

After motion starts

b)

Before motion

c)

At rest

d)

During rotation

96.

Couple produces:

a)

Translation

b)

Rotation

c)

Vibration

d)

Force

97.

Limiting friction equals:

a)

μ × normal reaction

b)

μ + normal

c)

μ / normal

d)

μ - normal

98.

Lami's theorem applicable to:

a)

Two forces

b)

Three forces

c)

Four forces

d)

Five forces

99.

Kinetic energy of translation:

a)

½mv²

b)

½Iω²

c)

mgh

d)

F×d

Mechanical Engineering Quiz

Total questions: 99

Worksheet time: 2hrs 39mins

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