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- Question
The function of a first compression ring (top ring) is that it
Options- A. increases the combustion temperature
- B. creates swirl
- C. maintains a seal and prevents the fuel leakage
- D. maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
- Correct Answer
- maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
- 1. The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.
Options- A. depends
- B. does not depend Discuss
- 2. A steel containing ferrite and pearlite is
Options- A. hard
- B. soft
- C. tough
- D. hard and tough Discuss
- 3. In forced circulation steam boilers, the force is applied
Options- A. to draw water
- B. to circulate water
- C. to drain off the water
- D. all of these Discuss
- 4. The high steam and low water safety valve is not used in
Options- A. Cochran boiler
- B. Cornish boiler
- C. Lancashire boiler
- D. Locomotive boiler Discuss
- 5. The welding process used to join the ends of two pipes of uniform cross-section, is
Options- A. spot welding
- B. seam welding
- C. projection welding
- D. upset butt welding Discuss
- 6. A grate, in a boiler, is a place in the combustion chamber upon which fuel (wood or coal) is burnt.
Options- A. True
- B. False Discuss
- 7. In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
Options- A. reversed Carnot cycle
- B. reversed Joule cycle
- C. reversed Brayton cycle
- D. reversed Otto cycle Discuss
- 8. The function of a second ring is that it is a
Options- A. back up compression ring which will work in place of the top ring when it is broken
- B. compression ring and aids the top ring in sealing and cooling
- C. back up oil control ring which will work in place of the bottom ring when it is broken
- D. cushion ring which prevents piston slap and knock Discuss
- 9. Which of the following statement is correct in regard to centreless grinding?
Options- A. The workpiece is supported throughout its entire length as grinding takes place.
- B. It is a continuous process and adopted for production work.
- C. It requires no holding device for the work.
- D. all of the above Discuss
- 10. In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.
Options- A. half
- B. equal to
- C. double Discuss
More questions
Correct Answer: does not depend
Correct Answer: soft
Correct Answer: to circulate water
Correct Answer: Locomotive boiler
Correct Answer: upset butt welding
Correct Answer: True
Correct Answer: reversed Brayton cycle
Correct Answer: compression ring and aids the top ring in sealing and cooling
Correct Answer: all of the above
Correct Answer: half
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