Applied Mechanics and Graphic Statics Online Exam - ObjectiveBooks

# Practice Test: Question Set - 24

1. Angular acceleration of a particle may be expressed as
(B) Degrees/sec2
(C) Revolutions/sec
(D) All the above

2. The tension in a cable supporting a lift
(A) Is more when the lift is moving downwards
(B) Is less when the lift is moving upwards
(C) Remains constant whether its moves downwards or upwards
(D) Is less when the lift is moving downwards

3. The vertical reaction at the support ‘A’ of the structure shown in below figure, is

(A) 1 t
(B) 2 t
(C) 3 t
(D) 3.5 t

4. The shape of a suspended cable under its own weight, is
(A) Parabolic
(B) Circular
(C) Catenary
(D) Elliptical

5. If the kinetic energy and potential energy of a simple harmonic oscillator of amplitude A are both equal to half the total energy, then the displacement is equal to
(A) A
(B) A/2
(C) A/√2
(D) A√2

6. Pick up the correct statement from the following:
(A) If two equal and perfectly elastic smooth spheres impinge directly, they interchange their velocities
(B) If a sphere impinges directly on an equal sphere which is at rest, then a fraction ½(1 - e2) the original kinetic energy is lost by the impact
(C) If two equal spheres which are perfectly elastic impinge at right angles, their direction after impact will still be at right angles
(D) All the above

7. The inherent property of a body which offers reluctance to change its state of rest or uniform motion, is
(A) Weight
(B) Mass
(C) Inertia
(D) Momentum

8. A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is
(A) 1.00 m/sec
(B) 1.57 m/sec
(C) 3.14 m/sec
(D) 6.28 m/sec

9. Pick up the correct statement from the following. The kinetic energy of a body
(A) Before impact is equal to that after impact
(B) Before impact is less than that after impact
(C) Before impact is more than that after impact
(D) Remain constant

10. The reaction at the support ‘A’ of the beam shown in below figure is

(A) 2 t
(B) 5.8 t
(C) 0.2 t
(D) 3.5 t

11. Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and
(A) Concurrent
(B) Parallel
(C) Concurrent parallel
(D) None of these

12. Coefficient of friction depends on
(A) Nature of surfaces only
(B) Area of contact only
(C) Both (A) and (B)
(D) None of the above

13. The intrinsic equation of catenary is
(A) S = c tan ψ
(B) y = c cosh x/c
(C) y = c cosh ψ
(D) y = c sinh ψ

14. If a particle is projected inside a horizontal tunnel which is 554 cm high with a velocity of 60 m per sec, the angle of projection for maximum range, is
(A) 8°
(B) 9°
(C) 10°
(D) 11°

15. What is the answer to this question?
(A) 10.8 t
(B) 10.6 t
(C) 10.4 t
(D) 10.2 t

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