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MCQs

Total Questions : 347 | Page 2 of 35 pages
Question 11. In a petrol engine, if diesel is used, then the engine will
  1.    not run
  2.    run more efficiently
  3.    run at high speed
  4.    explode
 Discuss Question
Answer: Option A. -> not run
Answer: (a).not run
Question 12. The running cost of a petrol engine is __________ than that of a diesel engine.
  1.    higher
  2.    lower
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> higher
Answer: (a).higher
Question 13. Which of the following statement is wrong ?
  1.    A four stroke cycle engine develops twice the power as that of a two stroke cycle engine.
  2.    For the same power developed, a four stroke cycle engine is lighter, less bulky and occupies less floor area.
  3.    The petrol engines are costly than diesel engines.
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 14. Solid fuel fabricated into various small shapes, which are assembled to form fuel elements, is in the form of
  1.    plates
  2.    pallets
  3.    pins
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 15. Number of working strokes per min. for a four stroke cycle engine are __________ the speed of the engine in r.p.m.
  1.    equal to
  2.    one-half
  3.    twice
  4.    four-times
 Discuss Question
Answer: Option B. -> one-half
Answer: (b).one-half
Question 16. The turbine of the turbo-prop engine is __________ that of the turbo-jet engine.
  1.    same as
  2.    smaller than
  3.    bigger than
  4.    None of these
 Discuss Question
Answer: Option C. -> bigger than
Answer: (c).bigger than
Question 17. A higher compression ratio causes
  1.    pre-ignition
  2.    increase in detonation
  3.    an acceleration in the rate of combustion
  4.    any one of these
 Discuss Question
Answer: Option D. -> any one of these
Answer: (d).any one of these
Question 18. Which of the following statement is correct ?
  1.    Compression ratio for petrol engines varies from 6 to 10.
  2.    Higher compression ratio in diesel engines results in higher pressures.
  3.    Petrol engines work on Otto cycle.
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 19. In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.
  1.    equal to
  2.    below
  3.    above
  4.    None of these
 Discuss Question
Answer: Option B. -> below
Answer: (b).below
Question 20. A diesel engine is __________ as compared to petrol engine, both running at rated load.
  1.    equally efficient
  2.    less efficient
  3.    more efficient
  4.    None of these
 Discuss Question
Answer: Option C. -> more efficient
Answer: (c).more efficient

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