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- Question
The function of oil-control rings is that it
Options- A. lubricates the cylinder wall by releasing oil from its hole
- B. keeps the cylinder wall lubricated by holding oil in its channel
- C. prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan
- D. maintains a seal and prevents escape of burned gases and oil leakage
- Correct Answer
- prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan
- 1. Seam welding is best adopted for metal thickness ranging from
Options- A. 0.025 to 3 mm
- B. 3 to 5 mm
- C. 5 to 8 mm
- D. 8 to 10 mm Discuss
- 2. A spring used to absorb shocks and vibrations is
Options- A. conical spring
- B. torsion spring
- C. leaf spring
- D. disc spring Discuss
- 3. A manometer can be used to measure vacuum pressures.
Options- A. Agree
- B. disagree Discuss
- 4. Cold working of metal increases
Options- A. tensile strength
- B. yield strength
- C. hardness
- D. all of these Discuss
- 5. The strength of the shaft is judged by the torque transmitted by the shaft.
Options- A. Yes
- B. No Discuss
- 6. The pressure of a liquid measured with the help of a piezometer tube is
Options- A. vacuum pressure
- B. gauge pressure
- C. absolute pressure
- D. atmospheric pressure Discuss
- 7. Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in LP. cylinder and H.P. cylinder.
Options- A. True
- B. False Discuss
- 8. The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is
Options- A. 1.02
- B. 1.32
- C. 1.66
- D. 1.82 Discuss
- 9. Enriched uranium may contain fissionable contents from
Options- A. 1 to 40%
- B. 10 to 50%
- C. 1 to 80%
- D. 1 to 99% Discuss
- 10. In aqua-ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in
Options- A. condenser
- B. evaporator
- C. absorber
- D. none of these Discuss
More questions
Correct Answer: 0.025 to 3 mm
Correct Answer: leaf spring
Correct Answer: Agree
Correct Answer: all of these
Correct Answer: Yes
Correct Answer: gauge pressure
Correct Answer: True
Correct Answer: 1.32
Correct Answer: 1 to 99%
Correct Answer: condenser
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