Applied Mechanics And Graphic Statics MCQ Questions & Answers

91

According to Law of Triangle of Forces

A) Three forces acting at a point, can be rep-resented by the sides of a triangle, each side being in proportion to the force B) Three forces acting along the sides of a triangle are always in equilibrium C) If three forces acting on a, point can be represented in magnitude and direction, by the sides of a triangle taken in order, these will be in equilibrium D) If the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third

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Answer: Option D

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92

The dimensions of centrifugal force are

A) M1 L2 T2 B) M’L’T1 C) M’L’T2 D) M’L-‘T2

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Answer & Solution

Answer: Option C

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93

Periodic time of body moving with simple harmonic motion, is

A) Directly proportional to its angular velocity B) Directly proportional to the square of its angular velocity C) Inversely proportional to the square of its angular velocity D) Inversely proportional to its angular velocity

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Answer: Option D

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94

The height at which the end of a rope of length $$l$$ should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is

A) $$\frac{3}{4}l$$ B) $$\frac{1}{2}l$$ C) $$\frac{l}{{\sqrt 2 }}$$ D) $$\frac{2}{{\sqrt 3 }}l$$

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Answer: Option C

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95

The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be

A) $$\frac{{\sin \left( {\alpha + \beta } \right)}}{{\sin \left( {\alpha - \beta } \right)}}$$ B) $$\frac{{\sin \left( {\alpha - \beta } \right)}}{{\sin \left( {\alpha + \beta } \right)}}$$ C) $$\frac{{\cos \left( {\alpha - \beta } \right)}}{{\cos \left( {\alpha + \beta } \right)}}$$ D) $$\frac{{\tan \left( {\alpha - \beta } \right)}}{{\tan \left( {\alpha + \beta } \right)}}$$

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Answer & Solution

Answer: Option B

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96

The C.G. of the shaded area of the bellow figure from the x-axis is
Applied Mechanics and Graphic Statics mcq question image

A) $$\frac{{\text{a}}}{4}$$ B) $$\frac{{3{\text{a}}}}{4}$$ C) $$\frac{{3{\text{b}}}}{{10}}$$ D) $$\frac{{3{\text{a}}}}{{10}}$$ E) $$\frac{{3{\text{a}}}}{5}$$

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Answer: Option C

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97

The velocity of a body fallen from height ‘h’, on reaching the ground is given by

A) v = 2gh B) v = 2gh² C) $${\text{v}} = \sqrt {2{\text{gh}}} $$ D) $${\text{v}} = \frac{1}{{\sqrt {2{\text{gh}}} }}$$

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Answer: Option C

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98

The C.G. of a right circular cone lies on its axis of symmetry at a height of

A) $$\frac{{\text{h}}}{2}$$ B) $$\frac{{\text{h}}}{3}$$ C) $$\frac{{\text{h}}}{4}$$ D) $$\frac{{\text{h}}}{5}$$

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Answer: Option C

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99

Centre of gravity of a thin hollow cone lies on the axis of symmetry at a height of

A) One-half of the total height above base B) One-third of the total height above base C) One-fourth of the total height above base D) None of these

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Answer & Solution

Answer: Option B

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100

The apparent weight of a man in a moving lift is less than his real weight when it is going down with

A) Uniform speed B) An acceleration C) Linear momentum D) Retardation

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Answer & Solution

Answer: Option B

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Applied Mechanics And Graphic Statics MCQ Questions & Answers | Civil Engineering