Lakshya Education MCQs

Question: A diesel engine has
Options:
A. 1 valve
B. 2 valves
C. 3 valves
D. 4 valves
Answer: Option C
Explanation :

Submit Answer & Explaination

Earn Reward Points by submitting Detailed Explaination for this Question

More Questions on This Topic :

Question 1. Pick up the false statement
  1.     Thermal efficiency of diesel engine is about 34%
  2.     Theoretically correct mixture of air and petrol is approximately 15:1
  3.     High speed compression engines operate on dual combustion cycle
  4.     S.I. engines are quality governed engines
Answer: Option D
Explanation :
Question 2. In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the
  1.     Beginning of suction stroke
  2.     End of suction stroke
  3.     Beginning of exhaust stroke
  4.     End of exhaust stroke
Answer: Option A
Explanation :
Question 3. The pressure inside the cylinder is _________ the atmospheric pressure during the exhaust stroke.
  1.     Equal to
  2.     Below
  3.     Above
  4.     None of these
Answer: Option C
Explanation :
Question 4. The pressure inside the cylinder is _________ the atmospheric pressure during the exhaust stroke.
  1.     Equal to
  2.     Below
  3.     Above
  4.     None of these
Answer: Option C
Explanation :
Question 5. The specific fuel consumption of a petrol engine compared to diesel engine of same h.p. is
  1.     Same
  2.     More
  3.     Less
  4.     Less or more depending on operating conditions
Answer: Option B
Explanation :
Question 6. In a typical medium speed 4-stroke cycle diesel engine
  1.     Compression starts at 35° after bottom dead center and ends at top dead center
  2.     Compression starts at bottom dead center and ends at top dead center
  3.     Compression starts at 10° before bottom dead center and, ends just before top dead center
  4.     May start and end anywhere
Answer: Option A
Explanation :

Check all Questions in this Topic : Click HERE