Discussion
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- Question
In petrol engines, advancing of the spark timing will __________ the knocking tendency.
Options- A. not effect
- B. decrease
- C. increase
- Correct Answer
- increase
- 1. The spark ignition engines are governed by
Options- A. hit and miss governing
- B. qualitative governing
- C. quantitative governing
- D. combination of (b) and (c) Discuss
- 2. The thermal efficiency of a petrol engine is __________ as compared to diesel engine.
Options- A. same
- B. less
- C. more Discuss
- 3. The compression ignition engines are governed by
Options- A. hit and miss governing
- B. qualitative governing
- C. quantitative governing
- D. combination of (b) and (c) Discuss
- 4. A diesel engine, during suction stroke, draws
Options- A. air only
- B. diesel only
- C. a mixture of diesel and air Discuss
- 5. Stoichiometric ratio is
Options- A. chemically correct air-fuel ratio by weight
- B. chemically correct air-fuel ratio by volume
- C. actual air-fuel ratio for maximum efficiency
- D. none of the above Discuss
- 6. The delay period in oil engines increases with increase in the speed of engine.
Options- A. Agree
- B. Disagree Discuss
- 7. If the temperature of intake air in internal combustion engine increases, then its efficiency will
Options- A. remain same
- B. decrease
- C. increase Discuss
- 8. In a four stroke cycle petrol engine, , the compression
Options- A. starts at 40° after bottom dead centre and ends at 30° before top dead centre
- B. starts at 40° before bottom dead centre and ends at 30° after bottom dead centre
- C. starts at bottom dead centre and ends at top dead centre
- D. may start and end anywhere Discuss
- 9. The operation of forcing additional air under pressure into the engine cylinder is known as
Options- A. supercharging
- B. carburation
- C. turbulence
- D. delay period Discuss
- 10. Supercharging is the process of supplying the intake air to the engine cylinder at a density __________ the density of the surrounding atmosphere.
Options- A. equal to
- B. less than
- C. greater than Discuss
IC Engines and Nuclear Power Plants problems
Search Results
Correct Answer: quantitative governing
Correct Answer: less
Correct Answer: qualitative governing
Correct Answer: air only
Correct Answer: chemically correct air-fuel ratio by volume
Correct Answer: Disagree
Correct Answer: decrease
Correct Answer: starts at 40° after bottom dead centre and ends at 30° before top dead centre
Correct Answer: supercharging
Correct Answer: greater than
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