Discussion
Home ‣ Mechanical Engineering ‣ Heat Transfer, Refrigeration and Air Conditioning See What Others Are Saying!
- Question
In case of solids, the heat transfer takes place according to radiation.
Options- A. Correct
- B. Incorrect
- Correct Answer
- Incorrect
- 1. During heating and humidification, the final relative humidity of air
Options- A. is higher than that of the entering air
- B. is lower than that of the entering air
- C. can be lower or higher than that of the entering air
- D. none of the above Discuss
- 2. Boyle's law states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
Options- A. Agree
- B. Disagree Discuss
- 3. Strain resetters are used to
Options- A. measure shear strain
- B. measure linear strain
- C. measure volumetric strain
- D. relieve strain Discuss
- 4. Which of the following statement is correct?
Options- A. The expansion of steam in a nozzle follows Rankine cycle.
- B. The friction in the nozzle increases the dryness fraction of steam.
- C. The pressure of steam at throat is called critical pressure.
- D. all of the above Discuss
- 5. The welding set up is said to have straight polarity, when
Options- A. work is connected to the positive terminal and the electrode holder to the negative terminal
- B. work is connected to the negative terminal and the electrode holder to the positive terminal
- C. work is connected to the positive terminal and the electrode holder is earthed
- D. work is connected to the negative terminal and the electrode holder is earthed Discuss
- 6. The change of entropy, when heat is removed from the gas, is negative.
Options- A. Yes
- B. No Discuss
- 7. In a centrifugal casting method
Options- A. core is made of sand
- B. core is made of ferrous metal
- C. core is made of non-ferrous metal
- D. no core is used Discuss
- 8. Which of the following operation is first performed?
Options- A. Spot facing
- B. Boring
- C. Tapping
- D. Drilling Discuss
- 9. The value of universal gas constant is same for all gases.
Options- A. Yes
- B. No Discuss
- 10. The temperature below which a gas is always liquified, is known as critical temperature.
Options- A. Correct
- B. Incorrect Discuss
More questions
Correct Answer: can be lower or higher than that of the entering air
Correct Answer: Disagree
Correct Answer: measure linear strain
Correct Answer: all of the above
Correct Answer: work is connected to the positive terminal and the electrode holder to the negative terminal
Correct Answer: Yes
Correct Answer: no core is used
Correct Answer: Boring
Correct Answer: Yes
Correct Answer: Incorrect
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