This set of IC Engines Multiple Choice Questions & Answers (MCQs) focuses on “Principles Of Carburetion”.
1. A simple carburetor supplies a rich mixture during ___________
a) starting
b) idling
c) cruising
d) accelerating
View Answer
Explanation: None.
2. The size of a carburetor is generally given in terms of the diameter of the ______________ in mm.
a) venturi tube
b) jet
c) nozzle
d) none of the mentioned
View Answer
Explanation: The size of the carburetor is generally given in terms of the diameter of the venturi tube in mm.
3. A decrease in the density of air ______________ the value of air-fuel ratio.
a) increases
b) reduces
c) equals
d) none of the mentioned
View Answer
Explanation: Generally, a decrease in the density of air reduces the value of air-fuel ratio.
4. Venturi tube is also known as ___________
a) choke tube
b) throat
c) nozzle
d) none of the mentioned
View Answer
Explanation: None.
5. The pressure difference between the float chamber and the throat of the venturi is known as ___________
a) carburetor expansion
b) carburetor acceleration
c) carburetor depression
d) none of the mentioned
View Answer
Explanation: Carburetor depression is defined as the pressure difference between the float chamber and the throat of the venturi.
6. The choke in an automobile meant is for supplying ___________
a) lean mixture
b) rich mixture
c) stoichiometric mixture
d) weak mixture
View Answer
Explanation: None.
7. Modern carburettors provide the correct quality of air-fuel mixture during ___________
a) starting
b) idling
c) cruising
d) all of the mentioned
View Answer
Explanation: Modern carburettors provide the correct quality of air-fuel mixture during all the conditions of starting, idling and cruising.
8. The air fuel ratio of the petrol engine is controlled by ___________
a) carburetor
b) injector
c) governor
d) none of the mentioned
View Answer
Explanation: The air fuel ratio of the petrol engine is controlled by carburetor while the injector is used to inject fuel and governor is inside engine.
Sanfoundry Global Education & Learning Series – IC Engine.
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