# Engineering/Civil Engineering [MCQS] Applied Mechanics Section -4 Sample Test,Sample questions

1.15

2.18

3.20

4.26

1.W sec θ

2.W cos θ

3.W sin θ

4. W cosec θ

## Question: ``` For a particle moving with a simple harrmonic motion, the frequency is```

1.directly proportional to periodic time

2. inversely proportional to periodic time

3.inversely proportional to its angular velocity

4.directly proportional to its angular velocity

1.0.25 cm

2.0.50 cm

3. 0.75 cm

4.1.00 cm.

1.1.5

2.5

3.25

4.314

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

1.in stable equilibrium

2.in unstable equilibrium

3.in neutral equilibrium

4.out of equilibrium

## Question: ``` A stone is whirled in a vertical circle, the tension in the string, is maximum```

1. when the string is horizontal

2. when the stone is at the highest position

3.when the stone is at the lowest position

4.at all the positions.

## Question: ``` According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centres lie on```

1. a point

2.a straight line

3. two straight lines

4. a triangle.

## Question: ``` Energy may be defined as```

1.power of doing work

2.capacity of doing work

3.rate of doing work

4.all the above.

1.2

2.3

3.4

4.5

## Question: ``` In simple harmonic motion, acceleration of a particle is proportional to```

1.rate of change of velocity

2.displacement

3.velocity

4.direction

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

1. friction force acting when the body is just about to move

2. friction force acting when the body is in motion

3.angle between normal reaction and resultant of normal reaction and limiting friction

4.ratio of limiting friction and normal reaction.

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

1.immediately after collision come momentarily to rest

2. tend to compress each other till they are compressed maximum possible

3.attempt to regain its original shape due to their elasticities

4.all the above.

## Question: ``` To double the period of oscillation of a simple pendulum```

1. the mass of its bob should be doubled

2.the mass of its bob should be quadrupled

4. its length should be doubled.

## Question: `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 table. If the impact is perfectly plastic, the velocity of the ball B just after impact would be`

1.zero

2. 5 m/sec

3. 10 m/sec

4. none of these.

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

1.. vertical component of velocity remains constant

2.horizontal component of velocity remains constant

3.speed of the ball remains constant

4.kinetic energy of the ball remains constant.

1.17° 48'

2.18° 48'

3.19° 48'

4.20° 48'

1.0.25

2.0.33

3.0.4

4.0.5

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

1. floor is smooth and the wall is rough

2.floor is rough and the wall is smooth

3.floor and wall both are smooth surfaces

4.floor and wall both are rough surfaces.

## Question: `A particle executes a simple harmonic motion. While passing through the mean position, the particle possesses`

1.maximum kinetic energy and minimum potential energy

2.maximum kinetic energy and maximum potential energy

3.minimum kinetic energy and maximum potential energy

4.minimum kinetic, energy and minimum potential energy

1.0°

2.30°

3.45°

4.60°

## Question: `A satellite goes on moving along its orbit round the earth due to`

1.gravitational force

2.centrifugal force

3. centripital force

4. none of these.

## Question: `A sphere is resting on two planes BA and BC which are inclined at 45° and 60° respectively with the horizontal. The reaction on the plane BA will be`

1. less than that on BC

2.more than that of BC

3.equal to that on BC

4.zero

## Question: `Angular acceleration of a particle may be expressed as`

2.degrees/sec2

3.revolutions/sec

4.all the above.

1.2.0 cm

2.1.5 cm

3.1

4.0.5 cm.

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

1.change the motion of the body

2.retard the motion of the body

3.introduce the motion of the body

4.none of these.

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

1.towards the wall at its upper end

2.away from the wall at its upper end

3.upwards at its upper end

4.downwards at its upper end

1.period time

2.oscillation

3.beat

4.amplitude.

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

2. tangentially at that point

3.away from the centre

4. towards the centre.

1.30°

2.45°

3.60°

4.75°.

1. dyne

2.Netwon

3.joule

4.erg.

1.dyne

2.Newton

3.kg

4.all the above.

## Question: `Varigon's theorem of moments states`

1.arithmetical sum of the moments of two forces about any point, is equal to the moments of their resultant about that point

2.algebraic sum of the moments of two forces about any point, is equal to the moment of their resultant about that point

3.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

4.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.

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