21.
The ratio of the indicated thermal efficiency to the air standard efficiency is known as

22.
Volatility of diesel fuel oil is

23.
Installation of supercharger on a four cycle diesel engine can result in the following percentage increase in power

24.
The operation of forcing additional air under pressure into the engine cylinder is known as

25.
In an internal combustion engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as

26.
The operation of forcing additional air under pressure in the engine cylinder is known as

27.
The knock in diesel engine occurs due to

28.
An engine indicator is used to determine the following

29.
Morse test is used to determine the I.P. of a

30.
The delay period in compression ignition engines depends upon

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