Applied Mechanics Objective Test - Set 02 - ObjectiveBooks

# Practice Test: Question Set - 02

1. The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at
(A) Supports
(B) Quarter span
(C) Mid span
(D) None of the above

2. A stone is whirled in a vertical circle, the tension in the string, is maximum
(A) When the string is horizontal
(B) When the stone is at the highest position
(C) When the stone is at the lowest position
(D) At all the positions

3. At a given instant ship ‘A’ is travelling at 6 km/h due east and ship ‘B’ is travelling at 8 km/h due north. The velocity of ‘B’ relative to ‘A’ is
(A) 7 km/hrs
(B) 2 km/hrs
(C) 1 km/hrs
(D) 10 km/hrs

4. The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base, is
(A) 1/4
(B) 1/2
(C) 3/4
(D) 2

5. The angular speed of a car taking a circular turn of radius 100 m at 36 km/hr will be

6. A weight ‘W’ is suspended at the free end of a light member hinged to a vertical wall. If the angle of inclination of the member with the upper wall is Î¸°, the force introduced in the member, is
(A) W sec Î¸
(B) W cos Î¸
(C) W sin Î¸
(D) W cosec Î¸

7. The beam shown in below figure is supported by a hinge at ‘A’ and a roller at ‘B’. The reaction RA of the hinged support ‘A’ of the beam, is
(A) 10.8 t
(B) 10.6 t
(C) 10.4 t
(D) 10.2 t

8. Two particles have been projected at angles 64° and 45° to the horizontal. If the velocity of projection of first is 10 m/sec, the velocity of projection of the other for equal horizontal ranges is
(A) 9.3 m/sec
(B) 8.3 m/sec
(C) 7.3 m/sec
(D) 6.3 m/sec

9. The force polygon representing a set of forces in equilibrium is a
(A) Triangle
(B) Open polygon
(C) Closed polygon
(D) Parallelogram

10. The centre of gravity of a homogeneous body is the point at which the whole
(A) Volume of the body is assumed to be concentrated
(B) Area of the surface of the body is assumed to be concentrated
(C) Weight of the body is assumed to be concentrated
(D) All the above

11. A satellite moves in its orbit around the earth due to
(A) Gravitational force
(B) Centripetal force
(C) Centrifugal force
(D) None of these

12. The force acting on a point on the surface of a rigid body may be considered to act
(A) At the centre of gravity of the body
(B) On the periphery of the body
(C) On any point on the line of action of the force
(D) At any point on the surface normal to the line of action of the force

13. For a non-concurrent force system to be in equilibrium
(A) Only the closure of force polygon is sufficient
(B) Only the closure of funicular polygon is sufficient
(C) Both force polygon and funicular polygon must close
(D) None of the above

14. If ‘l’ is the span of a light suspension bridge who’s each cable carries total weight (w) and the central dip is ‘y’, the horizontal pull at each support, is
(A) wl/4y
(B) wl/8y
(C) wl/2y
(D) wl

15. The C.G. of the shaded area of the below figure whose curve OM is a parabola from y-axis, is
(A) a/4
(B) 3a/4
(C) 3b/10
(D) 3a/10

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