Engineering > Mechanical Engineering INTERNAL COMBUSTION ENGINES I C ENGINES MCQs Total Questions : 256 Page 1 of 13 pages Question 1. If v₁ is the jet velocity and v₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by [2(V₀/V₁)]/ [1 + (V₀/V₁)²] (V₀/V₁)/ [1 + (V₀/V₁)²] V₀/(V₀ + V₁) V₁/(V₀ + V₁) See Solution Answer: Option A Explanation : Question 2. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 3. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 4. In diesel engine, the compression ratio in comparison to expansion ratio is Same Less More Variable See Solution Answer: Option C Explanation : Question 5. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 6. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 7. If v₁ is the jet velocity and v₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by [2(V₀/V₁)]/ [1 + (V₀/V₁)²] (V₀/V₁)/ [1 + (V₀/V₁)²] V₀/(V₀ + V₁) V₁/(V₀ + V₁) See Solution Answer: Option A Explanation : Question 8. If v₁ is the jet velocity and v₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by [2(V₀/V₁)]/ [1 + (V₀/V₁)²] (V₀/V₁)/ [1 + (V₀/V₁)²] V₀/(V₀ + V₁) V₁/(V₀ + V₁) See Solution Answer: Option A Explanation : Question 9. If v₁ is the jet velocity and v₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by [2(V₀/V₁)]/ [1 + (V₀/V₁)²] (V₀/V₁)/ [1 + (V₀/V₁)²] V₀/(V₀ + V₁) V₁/(V₀ + V₁) See Solution Answer: Option A Explanation : Question 10. If v₁ is the jet velocity and v₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is V₁ / (V₀ + V₁) V₀ / (V₀ + V₁) 2V₀ / (V₀ + V₁) 2V₁ / (V₀ + V₁) See Solution Answer: Option C Explanation : Question 11. If v₁ is the jet velocity and v₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is V₁ / (V₀ + V₁) V₀ / (V₀ + V₁) 2V₀ / (V₀ + V₁) 2V₁ / (V₀ + V₁) See Solution Answer: Option C Explanation : Question 12. If v₁ is the jet velocity and v₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is V₁ / (V₀ + V₁) V₀ / (V₀ + V₁) 2V₀ / (V₀ + V₁) 2V₁ / (V₀ + V₁) See Solution Answer: Option C Explanation : Question 13. If v₁ is the jet velocity and v₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is V₁ / (V₀ + V₁) V₀ / (V₀ + V₁) 2V₀ / (V₀ + V₁) 2V₁ / (V₀ + V₁) See Solution Answer: Option C Explanation : Question 14. Iso-octane (c₈h₁₈) has octane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 15. Iso-octane (c₈h₁₈) has octane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 16. Iso-octane (c₈h₁₈) has octane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 17. Iso-octane (c₈h₁₈) has octane number of 0 50 100 120 See Solution Answer: Option C Explanation : Question 18. The maximum temperature in the I.C. engine cylinder is of the order of 500-1000°C 1000-1500°C 1500-2000°C 2000-2500°C See Solution Answer: Option D Question 19. For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of 9 : 1 12 : 1 15 : 1 18 : 1 See Solution Answer: Option B Question 20. In petrol engines, the delay period is of the order of 0.001 second 0.002 second 0.003 second 0.004 second See Solution Answer: Option B 1234567...1213Next → Share on Facebook! Share on Pinterest!
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