Q66
Highest useful compression ratio (HUCR) is the highest compression ratio at which the
A.
Engine can run
B.
Engine gives maximum output
C.
Engine is most efficient
D.
Fuel can be used in a test engine without knocking
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Highest Useful Compression Ratio (HUCR) is the compression ratio at which a fuel can be used without detonation in a specified test engine under specified operating condition and the ignition and mixture strength being adjusted to give best efficiency