Mechanics of materials

• Which of the following relation is true ?

1. Δ = PL/AE
2. Δ = PE/AL
3. Δ = PA/EL
4. Δ = AL/PE

Ans: 1

• The maximum strain energy stored in a member when strained within elastic limit is called

1. Modulus of resilience
2. Proof resilience
3. Strain energy
4. Resilience

Ans: 2

• Strain energy stored when a specimen is strained within elastic limit is known as

1. Resilience
2. Proof resilience
3. Strain energy
4. All of the above

Ans: 1

• Partial derivative of strain energy gives

1. Moment
2. Force
3. Slope
4. Deflection

Ans: 4

• Strain energy is work done to

1. Deform the body
2. Resist elongation
3. Resist shortening
4. All of the above

Ans: 4

• When same amount of temperature change is given to a fixed and simply supported beam than the stress induced is more in

1. Simply supported beam
2. Fixed beam
3. Both have equal stress induced
4. Either 1 or 2

Ans: 2

• The moment of inertia of square section is given by

1. A⁴/12
2. πA⁴/12
3. πA³/ 32
4. None

Ans: 1

• Hoop stress is

1. Compressive
2. Radial
3. Tensile
4. Circumferential tensile

Ans: 4

• The shear force in the portion BC is

1. 2KN
2. 4KN
3. 20KN
4. 40KN

Ans: 2

• The algebraic sum of vertical forces on either side of the loaded section of beam gives

1. Deformed force
2. Bending moment
3. Shear force
4. All

Ans: 3

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