# Engineering/Civil Engineering [MCQS] Applied Mechanics Section -1 Sample Test,Sample questions

1.40 kg

2.60 kg

3.10 kg

4.100 kg

## Question: ``` The tension in a cable supporting a lift```

1. is more when the lift is moving downwards

2.is less when the lift is moving upwards

3.remains constant whether its moves downwards or upwards

4.is less when the lift is moving downwards.

1. 500 metres

2. 1000 metres

3. 1500 metres

4. 2000 metres

1.h/2

2.h/3

3.h/4

4.h/5

## Question: ``` The Law of Polygon of Forces states that```

1. if a polygen representing the forces acting at point in a body is closed, the forces are in equilibrium

2.if forces acting on a point can be represented in magnitde and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by th

3. if forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side

4.if forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium.

## Question: ``` To attain the synchronous orbit, the launch of a satellite, is done from a place```

1.on equator

2.on 30° latitude

3.on 45° latitude

4.on 60° latitude

1.0.01 m/sec

2. 0.05 m/sec

3.1.00 m/sec

4.1.5 m/see.

## Question: `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`

1.200 tonnes at the centre

2. 500 tonnes at the centre

3.200 tonnes at the right support

4.200 tonnes at the left support.

1.50%

2.40%

3.55%

4.30%

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

1.at the start

2.at the top of the trajectory

3.as it strikes the ground

4.else where.

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

1.Gravitational force

2.Centripetal force

3.Centrifugal force

4.none of these.

1.40 g

2.60 g

3.80 g

4.100 g

1.7 km/hrs

2.2 km/hrs

3.1km/hrs

4.10 km/hrs

## Question: `Engineer's units of force, is`

1.Newton in absolute units

2.Dyne in absolute units

3.Newton and dyne in absolute units

4. All the above.

## Question: `If a body moves in such a way that its velocity increases by equal amount in equal intervals of time, it is said to be moving with`

1.a uniform retardation

2.a uniform acceleration

3.a variable acceleration

4.a variable retardation

1.8°

2.9°

3.10°

4.11°

## Question: `If the gravitational accelerational at any place is doubled, the weight of a body, will`

1.be reduced to half

2.be doubled

3. not be affected

4.none of these.

1.1

2.2

3.3

4.4

## Question: `﻿The centre of gravity of a triangle is at the point where three`

1. medians of the triangle meet

2.perpendicular bisectors of the sides of the triangle meet

3.bisectors of the angle of the triangle meet

4. none of these.

1.work

2.force

3.power

4. torque

## Question: `Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by`

1. its longer side"

2.its shorter side"

3.the diagonal of the parallelogram which does not pass through the point of intersection of the forces"

4. the diagonal of the parallelogram which passes through the point of intersection of the forces"

## Question: `Pick up the correct statement from the following :`

1.Nature plays an important role in the launch of a satellite

2.The earth's gravity reduces the speed of a satellite by 32 km per second

3.The gravitational force relents as the satellite climbs higher

4.All the above.

## Question: `The angle which an inclined surface makes with the horiontal when a body placed on it is on the point of moving down, is called`

1.angle of repose

2.angle of friction

3.angle of inclination

4.none of these.

1.2

2.3

3.4

4.5

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

1.coplaner non-concurrent forces

2. non-coplaner concurrent forces

3.non-coplaner non-current forces

4.intersecting forces

1.99.0 mm

2.99.4 mm

3.100 cm

4.101 cm

1.straight line

2.involute

3. centroid

4.spiral.

## Question: `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 , the velocities of separation of the balls will be equal to`

1. original velocity in the same direction

2.half the original velocity in the same direction

3.half the original velocity in the opposite direction

4. original velocity in the opposite direction

1.188.5 m/sec

2.18.85 m/sec

3.1.885 m/sec

4.0.18845 m/sec.

1. 0.02 m

2.2 m

3.2.5 m

4. 20 m.

1.moment

2.momentum

3.power

4.impulse.

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

1. time of collision

2.period of collision

3.period of impact

4.all the above.

1.20 kg

2.25 kg

3.30 kg

4.35 kg

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

1. imaginary work

2.negative work

3.virtual work

4.none of these.

## Question: `Which one of the following statements is true ?`

1. The tangent of the angle of friction is equal to coefficeint of friction

2. The angle of repose is equal to angle of friction

3.The tangent of the angle of repose is equal to coefficient of friction

4.All the above.

## Question: `Work may be defined as`

1.force x distance

2.force x velocity

3.force x acceleration

4.none of these.

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