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Home ‣ Mechanical Engineering ‣ Heat Transfer, Refrigeration and Air Conditioning See What Others Are Saying!
- Question
The specific humidity during humidification process
Options- A. remains constant
- B. increases
- C. decreases
- Correct Answer
- increases
- 1. The variables which control the physical properties of a perfect gas are
Options- A. pressure exerted by the gas
- B. volume occupied by the gas
- C. temperature of the gas
- D. all of these Discuss
- 2. A single ended Scotch marine steam boiler may have one to four furnaces which enter from front end of the boiler.
Options- A. Correct
- B. Incorrect Discuss
- 3. The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is
Options- A. 23.97 bar
- B. 25 bar
- C. 26.03 bar
- D. 34.81 bar Discuss
- 4. A thin cylindrical shell of diameter (d), length (l) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to hoop strain is
Options- A.
- B.
- C.
- D.
Discuss
- 5. The problems caused by the wheel imbalance are
Options- A. hard steering and hard ride
- B. poor acceleration and hard steering
- C. steering wheel vibrations and uneven tyre wear
- D. poor acceleration and reduced fuel efficiency Discuss
- 6. The heat treatment process used for softening hardened steel is
Options- A. carburising
- B. normalising
- C. annealing
- D. tempering Discuss
- 7. The moment of inertia of a thin disc of mass m and radius r, about an axis through its centre of gravity and perpendicular to the plane of the disc is
Options- A. mr2/2
- B. mr2/4
- C. mr2/6
- D. mr2/8 Discuss
- 8. The boiling point of __________ is -10.5°C.
Options- A. ammonia
- B. R-12
- C. sulphur dioxide
- D. carbon dioxide Discuss
- 9. A three way catalytic converter
Options- A. recirculates exhaust gasses
- B. burns fuel vapaour gasses
- C. reduces N2, H2O, and CO2 emission levels
- D. removes CO, HC, and NO2 from the exhaust gasses passing through it Discuss
- 10. Modular ratio of the two materials is the ratio of
Options- A. linear stress to linear strain
- B. shear stress to shear strain
- C. their modulus of elasticities
- D. their modulus of rigidities Discuss
More questions
Correct Answer: all of these
Correct Answer: Correct
Correct Answer: 26.03 bar
Correct Answer:
Correct Answer: steering wheel vibrations and uneven tyre wear
Correct Answer: tempering
Correct Answer: mr2/2
Correct Answer: sulphur dioxide
Correct Answer: removes CO, HC, and NO2 from the exhaust gasses passing through it
Correct Answer: their modulus of elasticities
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