Discussion
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- Question
The neutral axis of the cross-section a beam is that axis at which the bending stress is
Options- A. zero
- B. minimum
- C. maximum
- D. infinity
- Correct Answer
- zero
- 1. Whenever a material is loaded within elastic limit, stress is __________ strain.
Options- A. equal to
- B. directly proportional to
- C. inversely proportional to Discuss
- 2. When a bar is cooled to - 5°C, it will develop
Options- A. no stress
- B. shear stress
- C. tensile stress
- D. compressive stress Discuss
- 3. Two shafts 'A' and 'B' transmit the same power. The speed of shaft 'A' is 250 r.p.m. and that of shaft 'B' is 300 r.p.m. The shaft 'B' has the greater diameter.
Options- A. True
- B. False Discuss
- 4. Two closely coiled helical springs 'A' and 'B' are equal in all respects but the number of turns of spring 'A' is half that of spring 'B' The ratio of deflections in spring 'A' to spring 'B' is
Options- A. 1/8
- B. 1/4
- C. 1/2
- D. 2 Discuss
- 5. The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its maximum crushing stress of punch, is equal to (where t = Thickness of the plate)
Options- A. t
- B. 2t
- C. 4t
- D. 8t Discuss
- 6. The stress at which the extension of the material takes place more quickly as compared to the increase in load, is called
Options- A. elastic limit
- B. yield point
- C. ultimate point
- D. breaking point Discuss
- 7. Which of the following statement is correct?
Options- A. The energy stored in a body, when strained within elastic limit is known as strain energy.
- B. The maximum strain energy which can be stored in a body is termed as proof resilience.
- C. The proof resilience per unit volume of a material is known as modulus of resilience.
- D. all of the above Discuss
- 8. The point of contraflexure is a point where
Options- A. shear force changes sign
- B. bending moment changes sign
- C. shear force is maximum
- D. bending moment is maximum Discuss
- 9. The torque transmitted by a solid shaft of diameter (D) is (where ? = Maximum allowable shear stress)
Options- A.
x ? x D3 - B.
x ? x D3 - C.
x ? x D3 - D.
x ? x D3
Discuss
- 10. Euler's formula holds good only for
Options- A. short columns
- B. long columns
- C. both short and long columns
- D. weak columns Discuss
Strength of Materials problems
Search Results
Correct Answer: directly proportional to
Correct Answer: tensile stress
Correct Answer: False
Correct Answer: 1/2
Correct Answer: 4t
Correct Answer: yield point
Correct Answer: all of the above
Correct Answer: bending moment changes sign
Correct Answer:
x ? x D3 Correct Answer: long columns
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