Question 1

A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy in the bar if E=1Ã105 N/mm2?

A. 312.5 N-m
B. 314500 N-mm
C. 245.5 N-m
D. 634 N-m

Question 2

A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm. What will be the stress in bar?

A. 100 N/mm2
B. 120 N/mm2
C. 125 N/mm2
D. 150 N/mm2

Question 3

A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the strain energy absorbed by the rod if E=1Ã105 N/mm2?

A. 100 N-m
B. 132 N-m
C. 148 N-m
D. 143.2 N-m

Question 4

A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the stress in the rod if E=1Ã105 N/mm2?

A. 1.19mm
B. 2.14mm
C. 3.45mm
D. 4.77mm

Question 5

A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5cm long. What will be the stress in the rod if E=1Ã105 N/mm2?

A. 47.746 N/mm2
B. 34.15 N/mm2
C. 48.456 N/mm2
D. 71.02 N/mm2

Question 6

A tension bar 6m long is made up of two parts, 4m of its length has cross sectional area of 12.5cm while the remaining 2m has 25cm. An axial load 5tonnes is gradually applied. What will be the total strain energy produced if E = 2 x 106 kgf/cm2?

A. 240kgf/cm
B. 242kgf/cm
C. 264kgf/cm
D. 270kgf/cm

Question 7

A uniform bar has a cross sectional area of 700mm and a length of 1.5m. if the stress at the elastic limit is 160 N/mm, what will be the value of gradually applied load which will produce the same extension as that produced by the suddenly applied load above?

A. 100kN
B. 110kN
C. 112kN
D. 120kN

Question 8

What is strain energy?

A. The work done by the applied load In stretching the body
B. The strain per unit volume
C. The force applied in stretching the body
D. The stress per unit are

Question 9

What is the relation between maximum stress induced due to gradual load to maximum stress the sudden load?

Question 10

What is the strain energy stored in a body when the load is applied gradually?

A. ÏE/V
B. ÏE2/V
C. ÏV2/E
D. ÏV2/2E

Question 11

A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy in the bar if E=1×105 N/mm2?

A. 312.5 N-m
B. 314500 N-mm
C. 245.5 N-m
D. 634 N-m

Question 12

A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the strain energy absorbed by the rod if E=1×105 N/mm2?

A. 100 N-m
B. 132 N-m
C. 148 N-m
D. 143.2 N-m

Question 13

A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the stress in the rod if E=1×105 N/mm2?

A. 1.19mm
B. 2.14mm
C. 3.45mm
D. 4.77mm

Question 14

A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5cm long. What will be the stress in the rod if E=1×105 N/mm2?

A. 47.746 N/mm2
B. 34.15 N/mm2
C. 48.456 N/mm2
D. 71.02 N/mm2