Q.1
The term 'Centroid' is
Q.2
Which of the following statement is incorrect?
Q.3
The length of a second's pendulum is
Q.4
The law of motion involved in the recoil of gun is
Q.5
If the masses of both the bodies, as shown in the below figure, are doubled, then the acceleration in the string will be
Engineering Mechanics mcq question image
Q.6
The moment of a force
Q.7
The motion of a wheel of a car is
Q.8
The rate of doing work is known as
Q.9
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly
Q.10
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is
Q.11
A cable with a uniformly distributed load per horizontal meter run will take the following shape
Q.12
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is
Q.13
The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called
Q.14
The unit of force in S.I. system of units is
Q.15
The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)
Q.16
The velocity ratio of a first system of pulleys with 4 pulleys is
Q.17
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is
Q.18
The point, through which the whole weight of the body acts, irrespective of its position, is known as
Q.19
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly
Q.20
In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively
Engineering Mechanics mcq question image
Q.21
The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then
Q.22
The center of gravity of a trapezium with parallel sides 'a' and 'b' lies at a distance of 'y' from the base 'b', as shown in the below figure. The value of 'y' is
Engineering Mechanics mcq question image
Q.23
Moment of inertia of a hollow rectangular section as shown in the below figure about X-X axis, is
Engineering Mechanics mcq question image
Q.24
The moment of the force ‘P’ about ‘O’ as shown in the below figure is
Engineering Mechanics mcq question image
Q.25
The below figure shows the three coplanar forces P, Q and R acting at a point O. If these forces are in equilibrium, then
Engineering Mechanics mcq question image
Q.26
In the shown figure, the tension (T) in the string will be
Engineering Mechanics mcq question image
Q.27
Two blocks ‘A’ and ‘B’ of masses 150 kg and 50 kg respectively are connected by means of a string as shown in the below figure. The tension in all the three strings __________ be same.
Engineering Mechanics mcq question image
Q.28
A pair of smith's tongs is an example of the lever of
Q.29

The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

  • 0.5r
  • 0.6r
  • 0.7r
  • 0.8r
Q.30

The angle which the normal reaction makes with the resultant reaction is called angle of friction.

  • Agree
  • Disagree
Q.31

The matter contained in a body, is called

  • impulsive force
  • mass
  • weight
  • momentum
Q.32

A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:

  • both the balls undergo an equal change in momentum
  • the change in momentum suffered by rubber ball is more than the lead ball
  • the change in momentum suffered by rubber ball is less than the lead ball
  • none of the above
Q.33

The impact between two lead spheres is approximately equal to an __________ impact.

  • elastic
  • inelastic
Q.34

The potential energy stored by a spring in compression, is called strain energy.

  • Yes
  • No
Q.35

The kinetic energy of a body __________ upon its mass and velocity.

  • does not depend
  • depends
Q.36

Which of the following statement is correct?

  • The periodic time of a particle moving with simple harmonic motion is the time taken by a particle for one complete oscillation,
  • The periodic time of a particle moving with simple harmonic motion is directly proportional to its angular velocity.
  • The velocity of the particle moving with simple harmonic motion is zero at the mean position.
  • The acceleration of the particle moving with simple harmonic motion is maximum at the mean position.
Q.37

According to lami's theorem

  • the three forces must be equal
  • the three forces must be at 120° to each other
  • the three forces must be in equilibrium
  • if the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two
Q.38

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

  • h/kG
  • h2/kG
  • kG2/h
  • h x kG
Q.39

If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,

  • P + m.a = 0
  • P - m.a = 0
  • P x m.a = 0
  • P/m.a = 0
Q.40

Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

  • nine times
  • six times
  • four times
  • two times
Q.41

The moment of a force

  • is the turning effect produced by a force, on the body, on which it acts
  • is equal to the product of force acting on the body and the perpendicular distance of a point and the line of action of the force
  • is equal to twice the area of the traingle, whose base is the line representing the force and whose vertex is the point, about which the moment is taken
  • all of the above
Q.42

According to Newton's first law of motion,

  • every body continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force
  • the rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts
  • to every action, there is always an equal and opposite reaction
  • none of the above
Q.43

The velocity ratio for the second system of pulleys is n.

  • True
  • False
Q.44

When two elastic bodies collide with each other,

  • the two bodies will momentarily come to rest after collision
  • the two bodies tend to compress and deform at the surface of contact
  • the two bodies begin to regain their original shape
  • all of the above
Q.45

The time taken by a particle for one complete oscillation is known as periodic time.

  • Agree
  • Disagree
Q.46

Which of the following are vector quantities?

  • Angular displacement
  • Angular velocity
  • Angular acceleration
  • all of these
Q.47

The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

  • P = mW - C
  • P = m/W + C
  • P = mW + C
  • P = C - mW
Q.48

Which of the following are vector quantities?

  • Angular displacement
  • Angular velocity
  • Angular acceleration
  • all of these
Q.49

If a number of coplaner forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.

  • equal to
  • less than
  • greater than
Q.50

If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.

  • Yes
  • No
0 h : 0 m : 1 s