Discussion
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- Question
The depth of centre of pressure lor an immersed surface inclined at an angle ? with the liquid surface lies at a distance equal to __________ the centre of gravity.
Options- A.
below - B. above
- C.
below - D. above
- Correct Answer
- below
- 1. The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
Options- A. shearing
- B. piercing
- C. punching
- D. blanking Discuss
- 2. The austenitic stainless steel contains
Options- A. 18% chromium and 8% nickel
- B. 8% chromium and 18% nickel
- C. 14% chromium and 0.35% carbon
- D. 14% nickel and 0.35% carbon Discuss
- 3. A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as
Options- A. steam condenser
- B. steam boiler
- C. steam preheater
- D. economiser Discuss
- 4. Inconel contains
Options- A. 65% nickel, 15% chromium and 20% iron
- B. 68% nickel, 29% copper and 3% other constituents
- C. 80% nickel and 20% chromium
- D. 80% nickel, 14% chromium and 6% iron Discuss
- 5. A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be
Options- A. 1 kW
- B. 2 kW
- C. 3 kW
- D. 4 kW Discuss
- 6. Brittle materials when subjected to tensile loads, snap off without giving any sensible elongation.
Options- A. Yes
- B. No Discuss
- 7. The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is
Options- A. equal to one
- B. less than one
- C. greater than one
- D. none of these Discuss
- 8. The normal heptane (C7H16) is given a rating of __________ octane number.
Options- A. 0
- B. 50
- C. 100
- D. 120 Discuss
- 9. The detonating tendency in petrol engines increases with increase of compression ratio.
Options- A. True
- B. False Discuss
- 10. In the shown figure, the tension (T) in the string will be
Options- A.
- B.
- C.
- D.
Discuss
More questions
Correct Answer: piercing
Correct Answer: 18% chromium and 8% nickel
Correct Answer: steam condenser
Correct Answer: 80% nickel, 14% chromium and 6% iron
Correct Answer: 4 kW
Correct Answer: Yes
Correct Answer: greater than one
Correct Answer: 0
Correct Answer: True
Correct Answer:
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