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Total Questions : 1124 | Page 1 of 113 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
  1.     [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
  2.     (V₀/V₁)/ [1 + (V₀/V₁)²]
  3.     V₀/(V₀ + V₁)
  4.     V₁/(V₀ + V₁)
 Discuss Question
Answer: Option A. ->  [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
Explanation :
Question 2. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of
  1.     0
  2.     50
  3.     100
  4.     120
 Discuss Question
Answer: Option C. ->  100
Explanation :
Question 3. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of
  1.     0
  2.     50
  3.     100
  4.     120
 Discuss Question
Answer: Option C. ->  100
Explanation :
Question 4. In diesel engine, the compression ratio in comparison to expansion ratio is
  1.     Same
  2.     Less
  3.     More
  4.     Variable
 Discuss Question
Answer: Option C. ->  More
Explanation :
Question 5. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of
  1.     0
  2.     50
  3.     100
  4.     120
 Discuss Question
Answer: Option C. ->  100
Explanation :
Question 6. The cetane (c₁₆h₃₄) which is a straight chain paraffin, is assigned a cetane number of
  1.     0
  2.     50
  3.     100
  4.     120
 Discuss Question
Answer: Option C. ->  100
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
  1.     [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
  2.     (V₀/V₁)/ [1 + (V₀/V₁)²]
  3.     V₀/(V₀ + V₁)
  4.     V₁/(V₀ + V₁)
 Discuss Question
Answer: Option A. ->  [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
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
  1.     [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
  2.     (V₀/V₁)/ [1 + (V₀/V₁)²]
  3.     V₀/(V₀ + V₁)
  4.     V₁/(V₀ + V₁)
 Discuss Question
Answer: Option A. ->  [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
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
  1.     [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
  2.     (V₀/V₁)/ [1 + (V₀/V₁)²]
  3.     V₀/(V₀ + V₁)
  4.     V₁/(V₀ + V₁)
 Discuss Question
Answer: Option A. ->  [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
Explanation :
Question 10. If v₁ is the jet velocity and v₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is
  1.     V₁ / (V₀ + V₁)
  2.     V₀ / (V₀ + V₁)
  3.     2V₀ / (V₀ + V₁)
  4.     2V₁ / (V₀ + V₁)
 Discuss Question
Answer: Option C. ->  2V₀ / (V₀ + V₁)
Explanation :

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