strength of materials MCQs – Page 5

Practise focused strength of materials questions with marked answers for exam preparation and subject revision.

strength of materials Mcqs
81. If three forces acting in different planes can be represented by a triangle, these will be in________________?
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A. full equilibrium

B. unpredictable

C. non-equilibrium

D. none of the above

E. partial equilibrium

82. Two coplanar couples having equal and op-posite moments_________________?
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A. balance each other

B. are equivalent

C. produce a couple and an unbalanced force

D. produce a moment of couple

E. can not balance each other
83. Dynamic friction as compared to static friction is________________?
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A. has no correlation

B. same

C. more

D. less

E. may be less of more depending on nature of surfaces and velocity

84. If a number of forces act simultaneously on a particle, it is possible_________________?
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A. to replace them by a couple

B. to replace them by a single force through C.G.

C. not a replace them by a single force

D. to replace them by a couple and a force

E. to replace them by a single force
85. A pair of smiths tongs is an example of the lever of__________________?
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A. fourth order

B. second order

C. zeioth order

D. third order

E. first order

86. According to principle of transmissibility of forces, the effect of a force upon a body is_______________?
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A. minimum when it acts at the C.G. of the body

B. different at different points in its line of action

C. the same at every point in its line of action

D. maximum when it acts at the center of gravity of a body

E. none of the above

87. According to law of triangle of forces______________?
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A. three forces acting at a point will be in equilibrium

B. three forces acting at a point can be represented by a triangle, each side being proportional to force

C. none of the above

D. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

E. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

88. If rain is falling in the opposite direction of the movement of a pedestrain, he has to hold his umbrella_________________?
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A. less inclined when moving

B. more inclined when standing

C. more inclined when moving

D. less inclined when standing

E. none of the above

89. A projectile is fired at an angle 9 to the vertical. Its horizontal range will be maximum when 9 is_________________?
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A. 60

B. 45

C. 0

D. 30

E. 90

90. A framed structure is perfect if it contains members equal to________________?
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A. n 2

B. 2n-l

C. 2n-3

D. 3n-2

E. n-l

91. Two non-collinear parallel equal forces acting in opposite direction________________?
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A. constitute a resultant couple

B. constitute a moment of couple

C. constitute a moment

D. balance each other

E. constitute a couple
92. A force acting on a body may_______________?
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A. retard its motion

B. introduce internal stresses

C. change its motion

D. all of the above

E. balance the other forces acting on it

93. The unit of power in S.I. units is______________?
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A. pascal per sec

B. newton meter

C. watt

D. joule

E. kilogram meter/sec

94. A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly________________?
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A. 38 m

B. 96 m

C. 124 m

D. 240 m

E. 62.5 m
95. Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one________________?
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A. circle

B. parabola

C. hyperbola

D. ellipse

E. none of the above

96. If two equal forces of magnitude P act at an angle 9, their resultant will be________________?
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A. Psin 9/2

B. P/2 cos 9/2

C. 2P tan 9/2

D. IP sin 9/2

E. IP cos 9/2
97. A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal________________?
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A. metal will float in water

B. metal is twice as dense as unknown fluid

C. none of the above

D. density of metal cant be determined

E. metal is twice as dense as water

98. The possible loading in various members of framed structures are_______________?
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A. shear or tension

B. all of the above

C. buckling or shear

D. compression or tension

E. bending