Discussion
Home ‣ Mechanical Engineering ‣ Strength of Materials See What Others Are Saying!
- Question
The strain energy stored in a spring, when subjected to maximum load, without suffering permanent distortion, is known as
Options- A. impact energy
- B. proof resilience
- C. proof stress
- D. modulus of resilience
- Correct Answer
- proof resilience
- 1. A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is
Options- A. 3.53 kN
- B. 33.3 kN
- C. 35.3 kN
- D. none of these Discuss
- 2. In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.
Options- A. less than
- B. more than Discuss
- 3. The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
Options- A. Kelvin
- B. Joule
- C. Clausis
- D. Gay-Lussac Discuss
- 4. The efficiency of roots blower __________ with the increase in pressure ratio.
Options- A. decreases
- B. increases
- C. does not change Discuss
- 5. Time study is carried out to determine the time required to complete job by
Options- A. a slow worker
- B. a fast worker
- C. an average worker
- D. an apprentice Discuss
- 6. The knocking tendency in spark ignition engines may be decreased by
Options- A. controlling the air-fuel mixture
- B. controlling the ignition timing
- C. controlling the exhaust temperature
- D. reducing the compression ratio Discuss
- 7. Volumetric efficiency of a compressor decreases with __________ in compression ratio.
Options- A. decrease
- B. increase Discuss
- 8. The negative rake is usually provided on
Options- A. high carbon steel tools
- B. high speed steel tools
- C. cemented carbide tools
- D. all of these Discuss
- 9. When the gas is heated at constant pressure, the heat supplied
Options- A. increases the internal energy of the gas
- B. increases the temperature of the gas
- C. does some external work during expansion
- D. Both (B) and (C) Discuss
- 10. In a centrifugal compressor, the flow of air is __________ to the axis of compressor.
Options- A. parallel
- B. perpendicular
- C. inclined
- D. none of these Discuss
More questions
Correct Answer: 35.3 kN
Correct Answer: less than
Correct Answer: Clausis
Correct Answer: decreases
Correct Answer: an average worker
Correct Answer: reducing the compression ratio
Correct Answer: increase
Correct Answer: cemented carbide tools
Correct Answer: Both (B) and (C)
Correct Answer: perpendicular
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