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211.

Chemically correct air mixture ratio for Otto cycle engine is:

A.	12;1	B.	14;1
C.	15;1	D.	20;1

212.

In leanest mixture, the fair fuel ratio is about:

A.	12;1	B.	14;1
C.	15;1	D.	20;1

213.

In richest mixture the air fuel ratio is about:

A.	4;1	B.	8;1
C.	15;1	D.	16;1

214.

A primary fuel filter is made of:

A.	Cloth	B.	Paper
C.	Both (a) & (b)	D.	None of these

215.

Secondary fuel filter is made of:

A.	Paper	B.	Thin wire
C.	Wooden	D.	All are correct

216.

Primary fuel filter is used to remove particles of size:

A.	5 Micron	B.	8 Micron
C.	10 Micron	D.	4 Micron

217.

Secondary fuel filter is used to remove the particles of size:

A.	1 Micron	B.	2 Micron
C.	3 Micron	D.	4 Micron

218.

The fuel injection pressure of CI engine ranges from:

A.	10 to 45 kg/cm2	B.	50 to 120 kg/cm2
C.	120 to 175 kg/cm2	D.	100 to 300 kg/cm2

219.

The fuel injected through a nozzle of carburetor is at a pressure of:

A.	10 to 45 kg/cm2	B.	50 to 120 kg/cm2
C.	126 to 175 kg/cm2	D.	100 to 300 kg/cm2

220.

The specific fuel consumption of diesel engine is:

A.	Less than in the petrol engine	B.	More than in the petrol engine
C.	Same as a petrol engine	D.	Incomparable with petrol engine