ExamVeda
Login
Home

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-4 section-1

Each section contains 100 MCQs on Internal Combustion Engines (I.C. Engines) .
31
Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged?
Discuss
Answer & Solution
Answer: Option B
Solution:
No,The supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged
32
The _________ engines can work on very lean mixture of fuel.
Discuss
Answer & Solution
Answer: Option B
Solution:
The Compression Ignition engines can work on very lean mixture of fuel.
- Compression ignition engine or CI engine is an internal combustion engine in which ignition of the fuel takes place with the help of hot compressed air.
- At the end of the compression stroke, fuel is injected into the cylinder and it gets ignited from the heat of compressed air and burning process begins.
33
Iso-octane (C8H18) has octane number of
Discuss
Answer & Solution
Answer: Option C
Solution:
Iso-octane (C8H18) has octane number of 100.
34
In a four stroke cycle engine, the sequence of operations is
Discuss
Answer & Solution
Answer: Option A
Solution:
In a four stroke cycle engine, the sequence of operations is Suction, compression, expansion and exhaust
35
In loop scavenging, the top of the piston is
Discuss
Answer & Solution
Answer: Option B
Solution:
In loop scavenging, the top of the piston is contoured
36
The actual volume of fresh charge admitted in 4-stroke petrol engine is
Discuss
Answer & Solution
Answer: Option C
Solution:
The actual volume of fresh charge admitted in 4-stroke petrol engine is less than stroke volume
37
The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called
Discuss
Answer & Solution
Answer: Option C
Solution:
The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called Volumetric efficiency. Volumetric Efficiency the ratio of the volume of fluid actually displaced by a piston or plunger to its swept volume.
38
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have
Discuss
Answer & Solution
Answer: Option D
Solution:
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have - Low density - Low temperature - Long ignition delay
39
The inlet valve of a four stroke cycle internal combustion engine remains open for
Discuss
Answer & Solution
Answer: Option C
Solution:
The inlet valve of a four stroke cycle internal combustion engine remains open for 230°
40
The turbine of the turboprop engine is __________ that of the turbojet engine.
Discuss
Answer & Solution
Answer: Option C
Solution:
The turbine of the turboprop engine is Bigger than of the turbojet engine.