Download GTU BE/B.Tech 2019 Summer 6th Sem Old 161902 Internal Combustion Engines Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem Old 161902 Internal Combustion Engines Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(OLD) ? EXAMINATION ? SUMMER 2019
Subject Code:161902 Date:16/05/2019
Subject Name: Internal Combustion Engines
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a)
Define IC Engine. Give Comparison between external & internal combustion engine
07
(b)
Explain Effect of variable specific heat on air standard cycles of diesel Cycle with P-V
& T-S diagram.
07



Q.2 (a)
Derive the equation for air standard efficiency of a Otto cycle.
07
(b) Define following terms.
1. Compression Ratio.
2. Clearance volume
3. Calorific value. (C.V.)
07
OR
(b) Define adiabatic flame temperature & explain it with a neat sketch. 07

Q.3 (a)
Explain construction & working of Boy?s gas Calorimeter with neat sketch.
07
(b)
Write Requirements of a good carburetor. Explain working of a simple carburetor.
07
OR
Q.3 (a) MPFI system for modern Automobile Engines- explains its types with a neat
sketch.
07
(b) What are different types of fuel injection system? Explain CRDI system for diesel
engine.
07

Q.4 (a)
Explain Types of ignition system & advantages & disadvantages of Battery Coil
ignition system.
07
(b)
Define supercharging. Explain any one method of supercharging of IC engine with
neat sketch.
07
OR
Q.4 (a) Define combustion. Explain combustion phenomena of SI engine with P-?
diagram.
07
(b) Write short note on effect of Engine variable on flame propagation. 07

Q.5 (a)
Why governing system is required for IC engine? Explain Hit and Miss governing
method for Gas Engine with neat sketch.
07
(b)
What do you mean by turbocharging? Explain in detail the working of pulse
turbocharging. (Buchi Type)
07
OR

Q.5 (a) Explain the Rope brake dynamometer method for measurement of brake power
(B.P.)
07
(b) Write down steps for performance test of IC Engine in laboratory. 07

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