Q.1

For perfectly elastic bodies, the value of coefficient of restitution is

  • zero
  • 0.5
  • 1.0
  • between 0 and 1.
Q.2

The inherent property of a body which offers reluctance to change its state of rest or uniform motion, is

  • weight
  • mass
  • interia
  • momentum.
Q.3

The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is b and the vertical side is a, from its vertical face is

  • none of these.
Q.4

A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is

  • 40 sec
  • 30 sec
  • 20 sec
  • 15 sec
  • 10 sec.
Q.5

If G is the Gauge of track, v is velocity of the moving vehicle, g is the acceleration due to gravity and r is the radius of a circular path, the required superelevation is

Q.6

A Seconds pendulum executes

  • 0.5 beat per second
  • 1.0 beat per second
  • 2.0 beats per second
  • 2.5 beats per second
  • 3 beats per second.
Q.7

The height at which the end of a rope of length l should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is

  • l
  • none of these.
Q.8

A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2. Time required to traverse a distance of 1.5 m, is

  • 40 sec
  • 30 sec
  • 20 sec
  • 15 sec
  • 10 sec.
Q.9

Effect of a force on a body depends upon its

  • direction
  • magnitude
  • position
  • all the above.
Q.10

For the given values of initial velocity of projection and angle of inclination of the plane, the maximum range for a projectile projected upwards will be obtained, if the angle of projection is

  • α = -
  • α = +
  • α = -
  • α = -
  • α = -
Q.11

Akg boy climbs up a 8 m rope in gymnasiam insec. The average power developed by the boy is approximately

  • 400 watts
  • 500 watts
  • 4000 watts
  • none of these.
Q.12

If G is the Gauge of track, v is velocity of the moving vehicle, g is the acceleration due to gravity and r is the radius of a circular path, the required superelevation is

Q.13

If the linear velocity of a point on the rim of a wheel ofm diameter, ism/sec, its angular velocity will be

  • 20 rad/sec
  • 15 rad/sec
  • 10 rad/sec
  • 5 rad/sec.
Q.14

For perfectly elastic bodies, the value of coefficient of restitution is

  • zero
  • 0.5
  • 1.0
  • between 0 and 1.
Q.15

For the given values of initial velocity of projection and angle of inclination of the plane, the maximum range for a projectile projected upwards will be obtained, if the angle of projection is

  • α = -
  • α = +
  • α = -
  • α = -
  • α = -
Q.16

A satellite is said to move in a synchronous orbit if it moves at an altitude ofkm with a maximum velocity of about

  • 7000 km per hour
  • 8000 km per hour
  • 9000 km per hour
  • 10, 000 per hour
  • 11, 000 km per hour.
Q.17

Energy may be defined as

  • power of doing work
  • capacity of doing work
  • rate of doing work
  • all the above.
Q.18

Varigon's theorem of moments states

  • arithmetical sum of the moments of two forces about any point, is equal to the moments of their resultant about that point
  • algebraic sum of the moments of two forces about any point, is equal to the moment of their resultant about that point
  • arithmetical sum of the moments of the forces about any point in their plane, is equal to the moment of their resultant about that point
  • algebraic sum of the moments of the forces about any point in their plane, is equal to the moment of their resulant about that point.
Q.19

The height at which the end of a rope of length l should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is

  • l
  • none of these.
Q.20

If G is the Gauge of track, v is velocity of the moving vehicle, g is the acceleration due to gravity and r is the radius of a circular path, the required superelevation is

Q.21

Total no of instantaneous centres of a machine having n links, is

  • n/2
    114-5.192-1.png
  • n
    114-5.192-1.png
  • (n - 1)
    114-5.192-1.png
Q.22

Total no of instantaneous centres of a machine having n links, is

  • n/2
    114-5.192-1.png
  • n
    114-5.192-1.png
  • (n - 1)
    114-5.192-1.png
Q.23

One half of a vibration of a body, is called

  • period time
  • oscillation
  • beat
  • amplitude.
Q.24

On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts

  • towards the wall at its upper end
  • away from the wall at its upper end
  • upwards at its upper end
  • downwards at its upper end
  • none of these.
Q.25

In simple harmonic motion, acceleration of a particle is proportional to

  • rate of change of velocity
  • displacement
  • velocity
  • direction
  • none of these.
Q.26

A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is

  • 0.25
  • 0.33
  • 0.40
  • 0.50
  • 0.55
Q.27

The acceleration of a particle moving along the circumference of a circle with a uniform speed, is directed

  • radially
  • tangentially at that point
  • away from the centre
  • towards the centre.
Q.28

From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The c.g. of the remainder shifts from the original position through

  • 0.25 cm
  • 0.50 cm
  • 0.75 cm
  • 1.00 cm.
Q.29

A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if

  • floor is smooth and the wall is rough
  • floor is rough and the wall is smooth
  • floor and wall both are smooth surfaces
  • floor and wall both are rough surfaces.
Q.30

A smooth cylinder lying on its convex surface remains

  • in stable equilibrium
  • in unstable equilibrium
  • in neutral equilibrium
  • out of equilibrium
  • none of these.
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