**1. When a change in length takes place, the strain is known as**

**(A) **lateral strain.

**(B)** volumetric strain.

**(C)** linear strain.

**(D)** shear strain.

#### **Answe****r ⇓**

2. Which of the following do not have identical dimensions?

**(A) **Momentum and impulse.

**(B)** Torque and energy.

**(C)** Torque and work.

**(D)** Moment of a force and angular momentum.

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**3. The weakest section of a diamond riveting is the section which passes through**

**(A) **first row.

**(B)** second row.

**(C)** central raw.

**(D)** one rivet hole of end row.

#### **Answer ⇓**

4. The ratio of limiting friction and normal reaction is known as

**(A) c**oefficient of friction.

**(B)** angle of friction.

**(C)** angle of repose.

**(D)** sliding friction.

#### **Answer ⇓**

5. The deformation per unit length is called

**(A) **compressive stress.

**(B)** shear stress.

**(C)** tensile stress.

**(D)** strain.

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6. Hooke’s law states that stress and strain are

**(A) **directly proportional.

**(B)** inversely proportional.

**(C)** curvilinear related.

**(D)** none of these.

#### **Answer ⇓**

7. Which of the following is a vector quantity?

**(A) **Energy.

**(B)** Mass.

**(C)** Momentum.

**(D)** Angle.

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8. The modular ratio of the two materials is the ratio of

**(A) **their modulus of elasticities.

**(B)** linear stress to linear strain.

**(C)** shear stress to shear strain.

**(D)** their modulus of rigidities.

#### **Answer ⇓**

9. The center of gravity of a uniform lamina lies at

**(A) **the center of the heavy portion.

**(B)** the midpoint of its axis.

**(C)** the bottom surface.

**(D)** All of the above.

#### **Answer ⇓**

10. A beam is said to be of uniform strength, if

**(A) **shear stress is the same throughout the beam.

**(B)** bending stress is same at every section along its longitudinal axis.

**(C)** B.M. is the same throughout the beam.

**(D)** deflection is the same throughout the beam.

#### **Answer ⇓**

11. The thermal or temperature stress is a function of

**(A) **coefficient of linear expansion.

**(B)** increase in temperature.

**(C)** modulus of elasticity.

**(D)** all of these.

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12. The value of Poisson’s ratio always remains

**(A) **greater than one.

**(B)** less than one.

**(C)** equal to one.

**(D)** none of these.

#### **Answer ⇓**

13. The riveted joint may fail due to

**(A) **Tearing of plates between rivets.

**(B)** Shearing of rivets.

**(C)** Tearing of the plates between the edge of the plate.

**(D)** all of the above.

#### **Answe****r ⇓**

14. The total strain energy stored in a body is termed as

**(A) **impact energy.

**(B)** resilience.

**(C)** proof resilience.

**(D)** modulus of resilience.

#### **Answer ⇓**

15. Forces are called coplanar when all of them acting on body lie in

**(A) **one point.

**(B)** one plane.

**(C)** different planes.

**(D)** perpendicular planes.

#### **Answer ⇓**

16. Which type of butt joint is most commonly used?

**(A) **Single inverted V-butt joint

**(B)** Double V-butt joint

**(C)** Double U-butt joint

**(D)** Single V-butt joint.