Are you guys looking for Mechanical Engineering MCQ Questions with Answers PDF Free Download as per Mechanical Engineering new exam pattern? You came to the right page. This may assist you to understand and check your knowledge about the Subjects. Students also can take a free test of the Multiple Choice Questions of Mechanical Engineering. Each question has four options followed by the right answer. These Mechanical Engineering MCQ Questions are selected supported by the newest exam pattern.

## Q1. The acceleration of a particle moving with simple harmonic motion, at any instant is given by

(A) ω.y

(B) ω2.y

(C) ω2/y

(D) ω3.y

Answer: (B) ω2.y

## Q2. The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is *__* √(gra/h)

*__*

(A) Less than

(B) Greater than

(C) Equal to

(D) None of these

Answer: (A) Less than

## Q3. If a rigid body is in equilibrium under the action of three forces, then

(A) These forces are equal

(B) The lines of action of these forces meet in a point

(C) The lines of action of these forces are parallel

(D) Both (B) and (C) above

Answer: (D) Both (B) and (C) above

## Q4. The unit of moment of inertia of an area is

(A) kg-m2

(B) kg-m-s2

(C) kg/m2

(D) m4

Answer: (D) m4

## Q5. The amplitude is always *__* radius of the circle.

*__*

(A) Equal to

(B) Less than

(C) Greater than

(D) None of these

Answer: (A) Equal to

## Q6. The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction.)

(A) α = 45° + φ/2

(B) α = 45° – φ/2

(C) α = 90° + φ

(D) α = 90° – φ

Answer: (B) α = 45° – φ/2

## Q7. The unit of energy in S.I. units is

(A) Dyne

(B) Watt

(C) kg-m

(D) Joule

Answer: (D) Joule

## Q8. The rate of change of displacement of a body is called

(A) Velocity

(B) Acceleration

(C) Momentum

(D) None of these

Answer: (A) Velocity

## Q9. If n = number of members and y = number of joints, then for a perfect frame, n = ?

(A) 1/2

(B) 2/3

(C) 3/2

(D) 2/4

Answer: (B) 2/3

## Q10. Which of the following statement is correct in connection with projectiles?

(A) A path, traced by a projectile in the space, is known as trajectory.

(B) The velocity, with which a projectile is projected, is known as the velocity of projection.

(C) The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.

(D) All of the above

Answer: (D) All of the above

## Q11. The ideal angle of banking provided on the curves on roads depends upon

(A) Weight of the vehicle

(B) (Velocity)2 of the vehicle

(C) Nature of the road surface

(D) Coefficient of friction between the road and vehicle contact point

Answer: (B) (Velocity)2 of the vehicle

## Q12. The units of moment of inertia of mass are

(A) kg-m²

(B) m²/kg

(C) kg/m²

(D) kg/m

Answer: (A) kg-m²

## Q13. According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then

(A) Their algebraic sum is zero

(B) Their lines of action are at equal distances

(C) The algebraic sum of their moments about any point in their plane is zero

(D) The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point

Answer: (C) The algebraic sum of their moments about any point in their plane is zero

## Q14. The matter contained in a body, is called

(A) Impulsive force

(B) Mass

(C) Weight

(D) Momentum

Answer: (B) Mass

## Q15. When a body of mass moment of inertia ‘I’ (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is

(A) Iω

(B) Iω2

(C) 0.5 Iω

(D) 0.5 Iω2

Answer: (D) 0.5 Iω2

## Q16. The moment of the force ‘P’ about ‘O’ as shown in the below figure is

(A) P × OA

(B) P × OB

(C) P × OC

(D) P × AC

Answer: (C) P × OC

## Q17. The total motion possessed by a body, is called

(A) Impulsive force

(B) Mass

(C) Weight

(D) Momentum

Answer: (D) Momentum

## Q18. A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

(A) Downward at its upper end

(B) Upward at its upper end

(C) Zero at its upper end

(D) Perpendicular to the wall at its upper end

Answer: (C) Zero at its upper end

## Q19. The maximum mechanical advantage of a lifting machine is

(A) 1 + m

(B) 1 – m

(C) 1 / m

(D) m

Answer: (C) 1 / m

## Q20. A framed structure is imperfect, if the numbers of members are *__* (2j – 3).

*__*

(A) Equal to

(B) Less than

(C) Greater than

(D) Either (B) or (C)

Answer: (D) Either (B) or (C)

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