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applied mechanics and graphic statics MCQs

Practise focused applied mechanics and graphic statics questions with marked answers for exam preparation and subject revision.

applied mechanics and graphic statics Mcqs
1. The unit of rotational inertia of a body in C.G.S system is________________?
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A. gm-cm3

B. cm4

C. gm-cm2

D. kg-cm2

2. Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction. The speeds of the objects are____________________?
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A. 4 m/sec and 6 m/sec

B. 2 m/sec and 2 m/sec

C. 3 m/sec and 2 m/sec

D. 3 m/sec and 3 m/sec

3. Minimum pull in a suspended cable with supports at two ends is equal to____________________?
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A. half the weight of the cable

B. resultant of horizontal thrust and support reaction

C. horizontal thrust

D. support reactions

4. Free body diagram is an____________________?
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A. isolated joint with only body forces acting on it

B. none of the above

C. isolated joint with all the forces, internal as well as external, acting on it

D. isolated joint with internal forces acting on it

5. Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?
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A. disc with larger density

B. disc with smaller density

C. both discs will have same rotational inertia

D. none of the above

6. Which of the following is a scalar quantity ?
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A. energy

B. momentum

C. impulse

D. torque

7. Force polygon method is applicable for_____________________?
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A. concurrent copianar force system

B. a system of parallel forces only

C. non-concurrent copianar force system

D. any copianar force system

8. In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?
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A. howe truss

B. warren truss

C. fink truss

D. king post truss

9. A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2 A, the energy becomes____________________?
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A. E/2

B. 2E

C. 4E

D. E

10. The torque produced by a force depends on__________________?
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A. the magnitude of the force

B. correct answer is?

C. thepoint of application of the force relative to origin</strong>

D. the direction of the force

11. One Newton is equivalent to________________?
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A. 1/9.81 kg-wt

B. 1 kg-wt

C. 9.81 kg-wt

D. 981 dyne

12. A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is_____________________?
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A. 8TC

B. 4

C. 6 7i

D. 8

13. A rope is wrapped twice around a rough pole with a coefficient of friction A . It is subjected to a force Fj at one end and a gradually increasing force F2 is applied at the other end till the rope just starts slip-ping. At this instant the ratio of F2 to Fi is_____________________?
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A. 1

B. e2*

C. e*72

D. e4*

14. The dimensions of centrifugal force are__________________?
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A. MLT1

B. ML-T2

C. M1 L2 T2

D. MLT2
15. A stone is thrown vertically upwards with a vertical velocity of 49 m/sec. It returns to the ground in________________?
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A. 5 sec

B. 10 sec

C. 20 sec

D. 8 sec

16. When a body slides down an inclined surface, the acceleration of the body is given by__________________?
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A. gsinG

B. g tan 6

C. g

D. g cos 6

17. The number of funicular polygons which can be drawn to pass through two specified points in the space diagram are__________________?
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A. 1

B. infinity

C. 2

D. zero

18. The angular speed of a car taking a circular turn of radius 100 m at 36 km/hr will be___________________?
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A. 100 rad/sec

B. 1 rad/sec

C. 10 rad/sec

D. 0.1 rad/sec
19. For a non-concurrent force system to be in equilibrium__________________?
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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

20. Cartesian form of the equation of catenary is_________________?
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A. y = c tan x/c

B. y = c sinh x/c

C. y = c cosh x/c

D. y = c sin1 x/c