# Engineering Mechanics MCQs Exam – Set 01 :: Mechanical Engineering

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.

(A) v
(B) 2v
(C) 4v
(D) 8v

## Q2. When two elastic bodies collide with each other,

(A) The two bodies will momentarily come to rest after collision
(B) The two bodies tend to compress and deform at the surface of contact
(C) The two bodies begin to regain their original shape
(D) All of the above

Answer: (D) All of the above

## Q3. The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)

(A) y = (gx²/2u² cos²α) + x. tanα
(B) y = (gx²/2u² cos²α) – x. tanα
(C) y = x. tanα – (gx²/2u² cos²α)
(D) y = x. tanα + (gx²/2u² cos²α)

Answer: (C) y = x. tanα – (gx²/2u² cos²α)

## Q4. A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act

(A) Towards the wall at its upper end
(B) Away from the wall at its upper end
(C) Downward at its upper end
(D) Upward at its upper end

Answer:(D) Upward at its upper end

## Q5. Coefficient of friction depends upon

(A) Area of contact only
(B) Nature of surface only
(C) Both (A) and (B)
(D) None of these

(A) h/2
(B) h/3
(C) h/4
(D) h/6

## Q7. Two bodies of masses m1 and m2 are hung from the ends of a rope, passing over a frictionless pulley as shown in the figure below. The acceleration of the string will beEngineering Mechanics question no. 01, set 07

(A) g (m1 – m2)/(m1 + m2)
(B) 2g (m1 – m2)/(m1 + m2)
(C) g (m1 + m2)/(m1 – m2)
(D) 2g (m1 + m2)/(m1 – m2)

Answer: (A) g (m1 – m2)/(m1 + m2)

## Q8. The motion of a particle round a fixed axis is

(A) Translatory
(B) Rotary
(C) Circular
(D) Translatory as well as rotary

## Q9. The forces, whose lines of action are parallel to each other and act in the same directions, are known as

(A) Coplanar concurrent forces
(B) Coplanar non-concurrent forces
(C) Like parallel forces
(D) Unlike parallel forces

## Q10. 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.

(A) Equal to
(B) Less than
(C) Greater than
(D) None of these

## Q11. The force, by which the body is attracted, towards the center of the earth, is called

(A) Impulsive force
(B) Mass
(C) Weight
(D) Momentum

## Q12. The bellow figure shows the three coplanar forces P, Q and R acting at a point O. If these forces are in equilibrium, thenEngineering Mechanics question no. 02, set 01

(A) P/sin β = Q/sin α = R/sin ɣ
(B) P/sin α = Q/sin β = R/sin ɣ
(C) P/sin ɣ = Q/sin α = R/sin β
(D) P/sin α = Q/sin ɣ = R/sin β

Answer: (B) P/sin α = Q/sin β = R/sin ɣ

## Q13. The coefficient of friction depends upon

(A) Nature of surfaces
(B) Area of contact
(C) Shape of the surfaces
(D) All of the above

(A) kg-m²
(B) m⁴
(C) kg/m²
(D) m³

## Q15. Pick up the incorrect statement from the following:

(A) The C.G. of a circle is at its centre
(B) The C.G. of a triangle is at the intersection of its medians
(C) The C.G. of a rectangle is at the intersection of its diagonals
(D) The C.G. of a semicircle is at a distance of r/2 from the centre

Answer: (D) The C.G. of a semicircle is at a distance of r/2 from the centre

## Q16. Moment of inertia of a hollow rectangular section as shown in the below figure about X-X axis, is

(A) (BD³/12) – (bd³/12)
(B) (DB³/12) – (db³/12)
(C) (BD³/36) – (bd³/36)
(D) (DB³/36) – (db³/36)

(A) r/2
(B) r/A
(C) r/3
(D) 0.134 r

(A) D/(d₁ + d₂)
(B) D/(d₁ – d₂)
(C) 2D/(d₁ + d₂)
(D) 2D/(d₁ – d₂)

(A) h/2
(B) J/3
(C) h/6
(D) h/4