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Model Questions for SSC Junior Engineer EXAM - Mechanical Engg Set-2

1. The range of a projectile is maximum, when the angle of projection is

A. 90°
B. 45°
C. 30°
D. 60°

2. The mechanical advantage of a lifting machine is the ratio of

A. load lifted to the effort applied
B. output to the input
C. distance moved by effort to the distance moved by load
D. all of the above

3. The bodies which rebound after impact are called

A. elastic bodies
B. inelastic bodies
C. neither elastic nor inelastic bodies
D. none of these

4. The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

A. less than
B. greater than
C. equal to
D. NON OF THESE

5. Euler's formula holds good only for

A. both short and long columns
B. short columns
C. long columns
D. weak columns

Study Kit for SSC Junior Engineer EXAM (Paper-1) 2017-2018

6. The object of caulking in a riveted joint is to make the joint

A. free from stresses
B. leak-proof
C. stronger in tension
D. free from corrosion

7. A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the

A. maximum moment of inertia
B. minimum moment of inertia
C. axis of load
D. perpendicular to the axis of load

8. The neutral axis of the cross-section a beam is that axis at which the bending stress is

A. maximum
B. minimum
B. infinity
D. zero

9. Strain energy is the

A. maximum strain energy which can be stored in a body
B. proof resilience per unit volume of a material
C. energy stored in a body when strained within elastic limits
D. energy stored in a body when strained upto the breaking of a specimen

10. 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.)

A. v = u + a.t
B. s = u.t + 1/2 a.t2
C. v2 = u2+2a.s
D. all of these