Mechanical Engineering Exam  >  Mechanical Engineering Questions  >  A diesel engine is usually more efficient tha... Start Learning for Free
A diesel engine is usually more efficient than a spark ignition engine because
  • a)
    diesel being a heavier hydrocarbon, releases more heat per kg than gasoline
  • b)
    the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratio
  • c)
    self ignition temperature of diesel is higher than that of gasoline
  • d)
    the compression ratio of a diesel engine is higher than that of an SI engine
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A diesel engine is usually more efficient than a spark ignition engine...
The compression ratio of diesel engine ranges between 14 to 25 whereas for S.I. engine, it ranges between 6 to 12. Diesel Engine gives more power but efficiency of diesel engine is less as compared to the S.I. engine for same compression ratio.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer?
Question Description
A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer?.
Solutions for A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A diesel engine is usually more efficient than a spark ignition engine becausea)diesel being a heavier hydrocarbon, releases more heat per kg than gasolineb)the air standard efficiency of diesel cycle is higher than the Otto cycle, at a fixed compression ratioc)self ignition temperature of diesel is higher than that of gasolined)the compression ratio of a diesel engine is higher than that of an SI engineCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev