   ## Applied Mechanics MCQ Practice Questions (Civil Engineering) Set 2

##### A projectile is thrown at an angle a to the horizontal with ? velocity v. It will have the maximum centripetal acceleration:

Options are :

• At the start
• Else where
• At the top of the trajectory
• As it strikes the ground

##### A cable loaded with 0.5 tonne per horizontal metre span is stretched between supports in the same horizontal line 400 m apart. If central dip is 20 m, the minimum tension in the cable, will be:

Options are :

• 200 tonnes at the left support
• 200 tonnes at the centre
• 200 tonnes at the right support
• 500 tonnes at the centre

Answer :500 tonnes at the centre

##### The total time of collision and restitution of two bodies, is called:

Options are :

• Time of collision
• Period of impact
• All the above
• Period of collision

Options are :

• 10.8 t
• 10.6 t
• 10.4 t
• 10.2 t

##### A satellite moves in its orbit around the earth due to:

Options are :

• Gravitational force
• Centripetal force
• None of these
• Centrifugal force

Options are :

• A
• C
• B
• D

Options are :

• 2000 metres
• 1000 metres
• 25000 metres
• 1500 metres
• 500 metres

Options are :

• A
• C
• B
• D

##### The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is Larger image , the velocities of separation of the balls will be equal to:

Options are :

• Half the original velocity in the same direction
• Original velocity in the opposite direction
• Original velocity in the same direction
• Half the original velocity in the opposite direction

Answer :Original velocity in the opposite direction

Options are :

• 0.02 m
• 2.5 m
• 20 m
• 2 m

##### When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as:

Options are :

• Virtual work
• Negative work
• None of these
• Imaginary work

##### Work may be defined as:

Options are :

• Force x velocity
• Force x acceleration
• None of these
• Force x distance

Options are :

• D
• A
• C
• B

##### The forces which meet at one point and have their lines of action in different planes are called:

Options are :

• Coplaner non-concurrent forces
• Non-coplaner concurrent forces
• None of these
• Non-coplaner non-current forces
• Intersecting forces

Options are :

• 2 t
• 5.8 t
• 0.2 t
• 3.5 t

Options are :

• A
• B
• D
• C

Options are :

• 60 kg
• 10 kg
• 40 kg
• 100 kg

Options are :

• 6t - 2
• 3t^(2) + 2t
• 6t + 2
• 3t - 2
• 3t^(3) - 2t

Options are :

• 9�
• 12�
• 10�
• 8�
• 11�

##### Joule is the unit of:

Options are :

• Force
• None of these
• Work
• Torque
• Power

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

Options are :

• 1.0
• 0.5
• Between 0 and 1
• Zero

Options are :

• A
• D
• B
• C

Options are :

• D
• A
• B
• E
• C

##### The motion of a particle is described by the relation x = t2- 10t + 30, where x is in metres and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be:

Options are :

• 60 m
• 50 m
• Zero
• None of these
• 30 m

##### A number of forces acting simultaneously on a particle of a body:

Options are :

• May be replaced by a single force through C.G. of the body
• May be replaced by a couple
• May be replaced by a single force
• May not be replaced by a single force
• None of these

Answer :May be replaced by a single force

Options are :

• 90�
• 30�
• 45�
• 60�

Options are :

• 15 m/sec
• 20 m/sec
• 10 m/sec
• 25 m/sec

Options are :

• A
• B
• D
• C

##### Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and:

Options are :

• Concurrent parallel
• Parallel
• Concurrent
• None of these

##### The force acting on a point on the surface of a rigid body may be considered to act:

Options are :

• on the periphery of the body
• At the centre of gravity of the body
• on any point on the line of action of the force
• At any point on the surface normal to the line of action of the force

Answer :on any point on the line of action of the force

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