Engineering Mechanics MCQ Questions & Answers

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Each section contains 100 MCQs on Engineering Mechanics .

The moment of inertia of a square of side a about its diagonal is

A) $$\frac{{{{\text{a}}^2}}}{8}$$ B) $$\frac{{{{\text{a}}^3}}}{{12}}$$ C) $$\frac{{{{\text{a}}^4}}}{{12}}$$ D) $$\frac{{{{\text{a}}^4}}}{{16}}$$

Discuss

Answer & Solution

Answer: Option C

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

The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

A) $$\frac{{3{\text{m}}{{\text{r}}^2}}}{5}$$ B) $$\frac{{3{\text{m}}{{\text{r}}^2}}}{{10}}$$ C) $$\frac{{2{\text{m}}{{\text{r}}^2}}}{5}$$ D) $$\frac{{4{\text{m}}{{\text{r}}^2}}}{5}$$

Discuss

Answer & Solution

Answer: Option B

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

A redundant frame is also called __________ frame.

A) Perfect B) Imperfect C) Deficient D) None of these

Discuss

Answer & Solution

Answer: Option B

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

The horizontal range of a projectile (R) is given by

A) $${\text{R}} = \frac{{{{\text{u}}^2}\cos 2\alpha }}{{\text{g}}}$$ B) $${\text{R}} = \frac{{{{\text{u}}^2}\sin2\alpha }}{{\text{g}}}$$ C) $${\text{R}} = \frac{{{{\text{u}}^2}\cos \alpha }}{{\text{g}}}$$ D) $${\text{R}} = \frac{{{{\text{u}}^2}\sin\alpha }}{{\text{g}}}$$

Discuss

Answer & Solution

Answer: Option B

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

If the body falls freely under gravity, then the gravitational acceleration is taken as

A) +8.9 m/s² B) -8.9 m/s² C) +9.8 m/s² D) -9.8 m/s²

Discuss

Answer & Solution

Answer: Option C

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

The velocity ratio of a single purchase crab winch can be increased by

A) Increasing the length of the handle B) Increasing the radius of the load drum C) Increasing the number of teeth of the pinion D) All of the above

Discuss

Answer & Solution

Answer: Option A

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

Concurrent forces are those forces whose lines of action

A) Lie on the same line B) Meet at one point C) Meet on the same plane D) None of these

Discuss

Answer & Solution

Answer: Option B

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

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

A) Density of metal can't be determined B) Metal is twice as dense as water C) Metal will float in water D) Metal is twice as dense as unknown fluid

Discuss

Answer & Solution

Answer: Option A

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

The center of percussion of a solid cylinder of radius ‘r’ resting on a horizontal plane will be

A) $$\frac{{\text{r}}}{2}$$ B) $$\frac{{2{\text{r}}}}{3}$$ C) $$\frac{{\text{r}}}{{\text{A}}}$$ D) $$\frac{{3{\text{r}}}}{2}$$

Discuss

Answer & Solution

Answer: Option D

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

The magnitude of two forces, which when acting at right angle produce resultant force of $$\sqrt {10} $$ kg and when acting at 60° produce resultant of $$\sqrt {13} $$ kg. These forces are

A) 2 and $$\sqrt 6 $$ B) 3 and 1 kg C) $$\sqrt 5 $$ and $$\sqrt 5 $$ D) 2 and 5

Discuss

Answer & Solution

Answer: Option C

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

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Engineering Mechanics MCQ Questions & Answers | Mechanical Engineering