Internal Combustion Engines (2161902) MCQ

MCQs of Fuel Air Cycles and Actual Cycles

MCQ No - 1

A stoichiometric air-fuel ratio is

(A) chemically correct mixture
(B) lean mixture
(C) rich mixture for idling
(D) rich mixture for overloads

A
MCQ No - 2

As compared to air cycle, in actual working, the effect of variation in specific heats is to

(A) increase maximum pressure and maximum temperature
(B) reduce maximum pressure and maximum temperature
(C) increase maximum pressure and decrease maximum
(D) none of the mentioned

B
MCQ No - 3

Dissociation is the disintegration of burnt gases at __________ temperatures.

(A) low
(B) high
(C) constant
(D) none of the mentioned

C
MCQ No - 4

In lean mixtures no dissociation takes place as the temperature is____________ .

(A) low
(B) high
(C) constant
(D) none of the mentioned

A
MCQ No - 5

In rich mixtures dissociation is prevented by the available

(A) CO
(B) CO2
(C) O2
(D) CO2 & O2

D