Engineering Mechanics MCQ Questions & Answers

91

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

A) 38 m B) 62.5 m C) 96 m D) 124 m

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

92

The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

A) $$\frac{{\pi {\text{N}}}}{{60}}$$ B) $$\frac{{\pi {\text{N}}}}{{180}}$$ C) $$\frac{{2\pi {\text{N}}}}{{60}}$$ D) $$\frac{{2\pi {\text{N}}}}{{180}}$$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

93

A cable with a uniformly distributed load per horizontal meter run will take the following shape

A) Straight line B) Parabola C) Hyperbola D) Elliptical

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

94

The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

A) $$\frac{{\text{D}}}{{{\text{D}} - {\text{d}}}}$$ B) $$\frac{{\text{D}}}{{{\text{D}} + {\text{d}}}}$$ C) $$\frac{{2{\text{D}}}}{{{\text{D}} - {\text{d}}}}$$ D) $$\frac{{2{\text{D}}}}{{{\text{D}} + {\text{d}}}}$$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

95

The center of gravity of a trapezium with parallel sides 'a' and 'b' lies at a distance of 'y' from the base 'b', as shown in the below figure. The value of 'y' is
Engineering Mechanics mcq question image

Engineering Mechanics mcq question image

A) $${\text{h}}\left( {\frac{{2{\text{a}} + {\text{b}}}}{{{\text{a}} + {\text{b}}}}} \right)$$ B) $$\frac{{\text{h}}}{2}\left( {\frac{{2{\text{a}} + {\text{b}}}}{{{\text{a}} + {\text{b}}}}} \right)$$ C) $$\frac{{\text{h}}}{3}\left( {\frac{{2{\text{a}} + {\text{b}}}}{{{\text{a}} + {\text{b}}}}} \right)$$ D) $$\frac{{\text{h}}}{3}\left( {\frac{{{\text{a}} + {\text{b}}}}{{2{\text{a}} + {\text{b}}}}} \right)$$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

96

Which of the following statement is incorrect?

A) A force acting in the opposite direction to the motion of the body is called force of friction B) The ratio of the limiting friction to the normal reaction is called coefficient of friction C) A machine whose efficiency is 100% is known as an ideal machine D) The velocity ratio of a machine is the ratio of load lifted to the effort applied

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

97

The length of a second's pendulum is

A) 94.9 cm B) 99.4 cm C) 100 cm D) 101 cm

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

98

The moment of a force

A) Is the turning effect produced by a force, on the body, on which it acts B) Is equal to the product of force acting on the body and the perpendicular distance of a point and the line of action of the force C) Is equal to twice the area of the triangle, whose base is the line representing the force and whose vertex is the point, about which the moment is taken D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

99

The motion of a wheel of a car is

A) Purely translation B) Purely rotational C) Combined translation and rotational D) None of these

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

100

The rate of doing work is known as

A) Potential energy B) Kinetic energy C) Power D) None of these

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Engineering Mechanics MCQ Questions & Answers | Mechanical Engineering