IC Engine Questions and Answers – Principles of Carburetion

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

Answer: d
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

Answer: a
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

Answer: b
Explanation: Generally, a decrease in the density of air reduces the value of air-fuel ratio.
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4. Venturi tube is also known as ___________
a) choke tube
b) throat
c) nozzle
d) none of the mentioned
View Answer

Answer: b
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

Answer: c
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

Answer: b
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

Answer: d
Explanation: Modern carburettors provide the correct quality of air-fuel mixture during all the conditions of starting, idling and cruising.
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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

Answer: a
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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To practice all areas of IC Engine, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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