Engineering Mechanics MCQ Questions & Answers

81

The forces, which meet at one point, but their lines of action do not lie in a plane, are called

A) Coplanar non-concurrent forces B) Non-coplanar concurrent forces C) Non-coplanar non-concurrent forces D) Intersecting forces

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Answer & Solution

Answer: Option B

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82

The possible loading in various members of framed structures are

A) Compression or tension B) Buckling or shear C) Shear or tension D) All of the above

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Answer & Solution

Answer: Option A

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83

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

A) Ellipse B) Hyperbola C) Parabola D) Circle

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Answer & Solution

Answer: Option B

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84

The loss of kinetic energy during inelastic impact, is given by
(where m₁ = Mass of the first body, m₂ = Mass of the second body, u₁ and u₂ = Velocities of the first and second bodies respectively.)

A) $$\frac{{{{\text{m}}_1}{{\text{m}}_2}}}{{2\left( {{{\text{m}}_1} + {{\text{m}}_2}} \right)}}{\left( {{{\text{u}}_1} - {{\text{u}}_2}} \right)^2}$$ B) $$\frac{{2\left( {{{\text{m}}_1} + {{\text{m}}_2}} \right)}}{{{{\text{m}}_1}{{\text{m}}_2}}}{\left( {{{\text{u}}_1} - {{\text{u}}_2}} \right)^2}$$ C) $$\frac{{{{\text{m}}_1}{{\text{m}}_2}}}{{2\left( {{{\text{m}}_1} + {{\text{m}}_2}} \right)}}\left( {{\text{u}}_1^2 - {\text{u}}_2^2} \right)$$ D) $$\frac{{2\left( {{{\text{m}}_1} + {{\text{m}}_2}} \right)}}{{{{\text{m}}_1}{{\text{m}}_2}}}\left( {{\text{u}}_1^2 - {\text{u}}_2^2} \right)$$

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Answer & Solution

Answer: Option A

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85

Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is ________ than that about X-X axis.
Engineering Mechanics mcq question image

Engineering Mechanics mcq question image

A) Two times B) Same C) Half D) None of these

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Answer & Solution

Answer: Option A

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86

In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.
Engineering Mechanics mcq question image

A) Half B) Equal to C) Double D) None of these

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Answer & Solution

Answer: Option A

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87

A force is completely defined when we specify

A) Magnitude B) Direction C) Point of application D) All of the above

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Answer & Solution

Answer: Option D

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88

The C.G. of a solid hemisphere lies on the central radius

A) At distance $$\frac{{3{\text{r}}}}{2}$$ from the plane base B) At distance $$\frac{{3{\text{r}}}}{4}$$ from the plane base C) At distance $$\frac{{3{\text{r}}}}{5}$$ from the plane base D) At distance $$\frac{{3{\text{r}}}}{8}$$ from the plane base

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Answer & Solution

Answer: Option D

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89

If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

A) First B) Second C) Third D) None of these

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Answer & Solution

Answer: Option B

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90

The unit of moment of inertia of an area is

A) kg-m² B) kg-m-s² C) kg/m² D) m⁴

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Answer & Solution

Answer: Option D

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Engineering Mechanics MCQ Questions & Answers | Mechanical Engineering