Internal Combustion Engines (I.C. Engines) MCQ Questions & Answers

Internal Combustion Engines (I.C. Engines) MCQ Questions & Answers | Mechanical Engineering

Learn Internal Combustion Engines (I.C. Engines) MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Internal Combustion Engines (I.C. Engines): MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-8 section-2

A diesel engine is _________ as compared to petrol engine, both running at rated load.

A) Equally efficient B) Less efficient C) More efficient D) None of these

Discuss

Answer & Solution

Answer: Option C

Solution:

A diesel engine is more efficient as compared to petrol engine, both running at rated load.

Which of the following statement is correct regarding normal cetane?

A) It is a standard fuel used for knock rating of diesel engines B) Its chemical name is normal hexadecane C) It has long carbon chain structure D) All of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

Note worthy points regarding normal cetane
- It is a standard fuel used for knock rating of diesel engines
- Its chemical name is normal hexadecane
- It has long carbon chain structure

The mechanical efficiency ($${\eta _{\text{m}}}$$) of the engine is given by

A) $${\eta _{\text{m}}} = \frac{{{\text{B}}{\text{.P}}{\text{.}}}}{{{\text{I}}{\text{.P}}{\text{.}}}}$$ B) $${\eta _{\text{m}}} = \frac{{{\text{I}}{\text{.P}}{\text{.}}}}{{{\text{B}}{\text{.P}}{\text{.}}}}$$ C) $${\eta _{\text{m}}} = \frac{{{\text{B}}{\text{.P}}{\text{.}} \times {\text{I}}{\text{.P}}{\text{.}}}}{{100}}$$ D) None of these

Discuss

Answer & Solution

Answer: Option A

Solution:

The mechanical efficiency ($${\eta _{\text{m}}}$$) of the engine is given by $${\eta _{\text{m}}} = \frac{{{\text{B}}{\text{.P}}{\text{.}}}}{{{\text{I}}{\text{.P}}{\text{.}}}}$$

The loud pulsating noise heard within the cylinder of an internal combustion engine is known as

A) Detonation B) Turbulence C) Pre-ignition D) Supercharging

Discuss

Answer & Solution

Answer: Option A

Solution:

The loud pulsating noise heard within the cylinder of an internal combustion engine is known as Detonation

The power actually developed by the engine cylinder of an I.C. engine is known as

A) Theoretical power B) Actual power C) Indicated power D) None of these

Discuss

Answer & Solution

Answer: Option C

Solution:

The power actually developed by the engine cylinder of an I.C. engine is known as indicated power

Most high speed compression engines operate on

A) Diesel cycle B) Otto cycle C) Dual combustion cycle D) Special type of air cycle

Discuss

Answer & Solution

Answer: Option C

Solution:

Most high speed compression engines operate on Dual combustion cycle

High speed compression engines operate on

A) Otto cycle B) Diesel cycle C) Dual combustion cycle D) All of these

Discuss

Answer & Solution

Answer: Option C

Solution:

High speed compression engines operate on Dual combustion cycle

The combustion in compression ignition engines is

A) Homogeneous B) Heterogeneous C) Both (A) and (B) D) None of these

Discuss

Answer & Solution

Answer: Option B

Solution:

The combustion in compression ignition engines is Heterogeneous

Combustion in compression ignition engines is

A) Homogeneous B) Heterogeneous C) Both (A) and (B) D) Laminar

Discuss

Answer & Solution

Answer: Option B

Solution:

Combustion in compression ignition engines is Heterogeneous

Antiknock for compression ignition engines is

A) Napthene B) Tetra ethyl lead C) Amyl nitrate D) Hexadecane

Discuss

Answer & Solution

Answer: Option C

Solution:

Antiknock for compression ignition engines is Amyl nitrate

Internal Combustion Engines (I.C. Engines) MCQ Questions &amp; Answers | Mechanical Engineering

Internal Combustion Engines (I.C. Engines) MCQ Questions & Answers | Mechanical Engineering