  ## Applied Mechanics MCQ Practice Questions (Civil Engineering) Set 8

Options are :

• W sec ?
• W cosec ?
• W tan ?
• W sin ?
• W cos ?

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

Options are :

• Floor is rough and the wall is smooth
• Floor is smooth and the wall is rough
• Floor and wall both are smooth surfaces
• Floor and wall both are rough surfaces

Answer :Floor and wall both are smooth surfaces

Options are :

• 19� 48'
• 20� 48'
• 18� 48'
• 21� 48'
• 17� 48'

##### Kinetic friction may be defined as:

Options are :

• Friction force acting when the body is just about to move
• Friction force acting when the body is in motion
• Angle between normal reaction and resultant of normal reaction and limiting friction
• Ratio of limiting friction and normal reaction

Answer :Friction force acting when the body is in motion

Options are :

• C
• D
• A
• B

##### The phenomenon of collision of two elastic bodies takes place because bodies:

Options are :

• Tend to compress each other till they are compressed maximum possible
• All the above
• Attempt to regain its original shape due to their elasticities
• Immediately after collision come momentarily to rest

##### Energy may be defined as:

Options are :

• All the above
• Power of doing work
• Rate of doing work
• Capacity of doing work

Options are :

• Beat
• Period time
• Amplitude
• Oscillation

##### A smooth cylinder lying on its convex surface remains:

Options are :

• In neutral equilibrium
• In stable equilibrium
• Out of equilibrium
• In unstable equilibrium
• None of these

##### A retarding force on a body does not:

Options are :

• Change the motion of the body
• Retard the motion of the body
• Introduce the motion of the body
• None of these

Answer :Retard the motion of the body

Options are :

• D
• A
• C
• B

##### A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball B on the tableIf the impact is perfectly plastic, the velocity of the ball B just after impact would be:

Options are :

• None of these
• 10 m/sec
• 5 m/sec
• Zero

Options are :

• 25 kg
• 75 kg
• 60 kg
• 50 kg

Options are :

• Joule
• Netwon
• Erg
• Dyne

Options are :

• 0.50 cm
• 0.25 cm
• 0.75 cm
• 1.00 cm

Options are :

• 9.6 t
• 0.5 t
• 8.5 t
• 1.6 t

Options are :

• C
• B
• D
• A

Options are :

• B
• C
• A
• D

Options are :

• D
• B
• C
• A

##### The intrinsic equation of catenary is:

Options are :

• y = c cosh x/c
• S = c tan ?
• y = c cosh ?
• y = c sinh ?

Answer :S = c tan ?

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

Options are :

• Tangentially at that point
• Away from the centre
• Towards the centre

Options are :

• m^(4)
• kg/m
• kg-m^(2)
• m^(3)
• kg/m^(2)

Options are :

• 5
• 25
• 314
• 1.5

Options are :

• 0.5 cm
• 2.0 cm
• 1.5 cm
• 1.0

Options are :

• 0.50
• 0.55
• 0.40
• 0.25
• 0.33

Options are :

• 15
• 26
• 20
• 18

Options are :

• D
• A
• B
• C

Options are :

• A
• B
• C
• D

Options are :

• 50 kg
• 100 kg
• 120 kg
• 75 kg

##### A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight:

Options are :

• Vertical component of velocity remains constant
• Horizontal component of velocity remains constant
• Speed of the ball remains constant
• Kinetic energy of the ball remains constant

Answer :Horizontal component of velocity remains constant

Comment / Suggestion Section
Point our Mistakes and Post Your Suggestions