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Strength-of-materials Questions Set 15:

Quiz Mode

Which of the following is the bending formula?

(M/I) = (σ/y) = (E/R)

(M/E) = (σ/y) = (R/I)

(M/y) = (σ/I) = (E/R)

None of these

Solution:

In a tensile test conducted on a steel bar, the gauge length was 10 cm and the extension was 2 mm. What is the percentage elongation?

0.2%

0.02%

0.002%

Solution:

A rod of length 300 mm is subjected to a force of 120 kN. If the elongation in the rod is 1.5 mm, calculate the strain in the rod.

0.002

0.005

0.025

0.060

Solution:

Find the strain in a brass rod of length 250 mm when subjected to a tensile load of 50 kN, if the extension of the rod is 0.3 mm.

0.025

0.0012

0.0046

0.0014

Solution:

If the normal stress and the tangential stress acting on a steel bar are 37.5 MPa and 21.65 MPa respectively, determine the resultant stress.

43.3 MPa

59.15 MPa

29.57 MPa

35 MPa

Solution:

A rectangular channel has a cross-sectional area of 50 m². If the channel section is to be most economical, calculate the depth. Given that the width, B, is 10 m.

10 m

8 m

5 m

12 m

Solution:

Which of the following is/are limitation(s) of string law?

Valid only when more than three particles are connected by a single string

Direction of motion cannot be specified

Both option 1 and option 2

None of these

Solution:

Find the total elongation of a solid metal bar of uniform diameter D and length L hung vertically from a ceiling due to its own weight, if its density is ρ and the modulus of elasticity is E.

L^2/2E

E/2L^2

L/2E

E/2L

Solution:

A sphere of diameter 10 mm is melted and recast into a solid cylinder of length 2/3 cm and diameter 'd'. The young's modulus of the material is 100 GPa, and the temperature rise is 100°C. The coefficient of thermal expansion is 10^-6/°C. Find the thermal stress generated. (Assume the expansion is only through length and the cylinder is not free at its end)

10 MPa

15 MPa

20 MPa

100 MPa

Solution:

A thin-walled titanium alloy spherical shell has a 1-m inside diameter and is 7 mm thick. It is completely filled with an unpressurized, incompressible liquid. Through a small hole, an additional 1000 cm³ of the same liquid is pumped into the shell, thus increasing the shell radius. Find the pressure after the additional liquid has been introduced and the hole closed. For this titanium alloy, E = 114 GPa and the tensile yield point of the material is 830 MPa.

109 MPa

100 MPa

109 GPa

107 MPa

Strength-of-materials Questions Set 15:

Which of the following is the bending formula?

Solution:

In a tensile test conducted on a steel bar, the gauge length was 10 cm and the extension was 2 mm. What is the percentage elongation?

Solution:

A rod of length 300 mm is subjected to a force of 120 kN. If the elongation in the rod is 1.5 mm, calculate the strain in the rod.

Solution:

Find the strain in a brass rod of length 250 mm when subjected to a tensile load of 50 kN, if the extension of the rod is 0.3 mm.

Solution:

If the normal stress and the tangential stress acting on a steel bar are 37.5 MPa and 21.65 MPa respectively, determine the resultant stress.

Solution:

A rectangular channel has a cross-sectional area of 50 m². If the channel section is to be most economical, calculate the depth. Given that the width, B, is 10 m.

Solution:

Which of the following is/are limitation(s) of string law?

Solution:

Find the total elongation of a solid metal bar of uniform diameter D and length L hung vertically from a ceiling due to its own weight, if its density is ρ and the modulus of elasticity is E.

Solution:

Solution:

Solution:

Related Question Sets:

Related Topics:

Strength-of-materials Questions Set 15:

Which of the following is the bending formula?

Solution:

In a tensile test conducted on a steel bar, the gauge length was 10 cm and the extension was 2 mm. What is the percentage elongation?

Solution:

A rod of length 300 mm is subjected to a force of 120 kN. If the elongation in the rod is 1.5 mm, calculate the strain in the rod.

Solution:

Find the strain in a brass rod of length 250 mm when subjected to a tensile load of 50 kN, if the extension of the rod is 0.3 mm.

Solution:

If the normal stress and the tangential stress acting on a steel bar are 37.5 MPa and 21.65 MPa respectively, determine the resultant stress.

Solution:

A rectangular channel has a cross-sectional area of 50 m2. If the channel section is to be most economical, calculate the depth. Given that the width, B, is 10 m.

Solution:

Which of the following is/are limitation(s) of string law?

Solution:

Find the total elongation of a solid metal bar of uniform diameter D and length L hung vertically from a ceiling due to its own weight, if its density is ρ and the modulus of elasticity is E.

Solution:

Solution:

Solution:

Related Question Sets:

Related Topics:

A rectangular channel has a cross-sectional area of 50 m². If the channel section is to be most economical, calculate the depth. Given that the width, B, is 10 m.