Engineering/Mechanical Engineering Engineering MCQS -Mechanics Section-1 Sample Test,Sample questions

Question:
 
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

1.30°

2.60°

3.90°

4.120°

Posted Date:-2021-03-26 07:07:09


Question:
 
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is __________ the momentum of body having mass m2.

1. equal to

2. less than

3.greater than

4.none of these

Posted Date:-2021-03-26 07:07:09


Question:
  
A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.

1.equal to

2.less than

3.greater than

4.None of these

Posted Date:-2021-03-26 07:07:09


Question:
  
Moment of inertia of a circular section about an axis perpendicular to the section is

1.Ï€d3/16

2.Ï€d3/32

3.Ï€d4/32

4.Ï€d4/64

Posted Date:-2021-03-26 07:07:09


Question:
  
The unit of angular acceleration is

1.N-m

2.m/s

3. m/s2

4.rad/s2

Posted Date:-2021-03-26 07:07:09


Question:
  
When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

1.simple pendulum

2. compound pendulum

3.torsional pendulum

4.second's pendulum

Posted Date:-2021-03-26 07:07:09


Question:
A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)

1.P = W tanα

2. P = W tan(α + φ)

3.P = W (sinα + μcosα)

4.P = W (cosα + μsinα)

Posted Date:-2021-03-26 07:07:09


Question:
A redundant frame is also called __________ frame.

1.perfect

2.imperfect

3.deficient

4. none of these

Posted Date:-2021-03-26 07:07:09


Question:
A smooth cylinder lying on its convex surface remains in __________ equilibrium.

1.stable

2.unstable

3.neutral

4.None of these

Posted Date:-2021-03-26 07:07:09


Question:
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

1.equal to

2.equal and opposite to

3.less than

4.. greater than

Posted Date:-2021-03-26 07:07:09


Question:
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is

1. bh3/4

2.bh3/8

3.bh3/12

4.bh3/36

Posted Date:-2021-03-26 07:07:09


Question:
One watt is equal to

1.0.1 joule/s

2.1 joule/s

3. 10 joules/s

4.100 joules/s

Posted Date:-2021-03-26 07:07:09


Question:
Static friction is always __________ dynamic friction.

1.equal to

2.less than

3.greater than

4.None of these

Posted Date:-2021-03-26 07:07:09


Question:
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

1.principle of independence of forces

2.principle of resolution of forces

3.principle of transmissibility of forces

4. none of these

Posted Date:-2021-03-26 07:07:09


Question:
The angle between two forces when the resultant is maximum and minimum respectively are

1. 0° and 180°

2.180° and 0°

3.90° and 180°

4. 90° and 0°

Posted Date:-2021-03-26 07:07:09


Question:
The bodies which rebound after impact are called

1.inelastic bodies

2.elastic bodies

3.neither elastic nor inelastic bodies

4. none of these

Posted Date:-2021-03-26 07:07:09


Question:
The friction experienced by a body, when in motion, is known as

1. rolling friction

2.dynamic friction

3. limiting friction

4.static friction

Posted Date:-2021-03-26 07:07:09


Question:
The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

1.static friction

2.dynamic friction

3.limiting friction

4.coefficient of friction

Posted Date:-2021-03-26 07:07:09


Question:
The mechanical advantage of a lifting machine is the ratio of

1.distance moved by effort to the distance moved by load

2. load lifted to the effort applied

3.output to the input

4.all of the above

Posted Date:-2021-03-26 07:07:09


Question:
The range of a projectile is maximum, when the angle of projection is

1.30°

2.45°

3.60°

4.90°

Posted Date:-2021-03-26 07:07:09


Question:
The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is

1. sin θ

2.cos θ

3.tan θ

4.cosec θ

Posted Date:-2021-03-26 07:07:09


Question:
Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity

1.v

2.v/2

3.v/4

4.v/8

Posted Date:-2021-03-26 07:07:09


Question:
two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are

1.15 N and 5 N

2. 20 N and 5 N

3. 15 N and 15 N

4.none of these

Posted Date:-2021-03-26 07:07:09


Question:
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)

1.v = u + a.t

2. s = u.t + 1/2 a.t2

3.v2 = u2+2a.s

4.all of these

Posted Date:-2021-03-26 07:07:09


Question:
Work done is said to be zero, when

1. some force acts on a body, but displacement is zero

2.no force acts on a body but some displacement takes place

3.either (a) or (b)

4.none of the above

Posted Date:-2021-03-26 07:07:09


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