Internal Combustion Engines (2161902) MCQ

MCQs of Combustion in SI and CI Engines

MCQ No - 1

____________ is a chemical reaction in which certain elements of the fuel like hydrogen and carbon combine with oxygen liberating heat energy and causing an increase in temperature of the gases.

(A) Compression
(B) Expansion
(C) Combustion
(D) None of the above

MCQ No - 2

The knock limit is dependent upon

(A) the type of fuel used
(B) mixture ratio
(C) spark advance
(D) all of the above

MCQ No - 3

The knocking in spark ignition engines can be reduced by

(A) retarding the spark
(B) increasing the engine speed
(C) both (a) and (b)
(D) none of these

MCQ No - 4

In ____________ combustion, the flame initiated by the spark travels across the combustion chamber in a fairly uniform manner.

(A) abnormal
(B) normal
(C) knocking
(D) none of the above

MCQ No - 5

Homogeneous mixture is formed inside the engine cylinder and the combustion is initiated inside the cylinder at a particular instant towards the end of the____________.

(A) compression stroke
(B) expansion stroke
(C) power stroke
(D) none of the above