Download AKTU B-Tech 5th Sem 2017-2018 NME 505 Engines And Compressors Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2017-2018 NME 505 Engines And Compressors Question Paper

Printed pages: 2 Sub Code: NME-505
Paper Id: nu.? R011 NO- | | | | | | | | | | |
B.TECH.
(SEM -FIFTH) THEORY EXAMINATION 2017-18
I C ENGINES & COMPRESSORS
Time: 3 Hours Total Marks: 100
Note: 1. Attempt all Sections. If require any missing data; then choose suitably.
SECTION A
1. Attempt all questions in brief. 2 X10 = 20
a) What is degree of reaction?
b) What is Motor Octane No And Research Octane No. ?
c) Write On Swirl & Squish.
d) Draw Actual P-V Diagram For Four Stroke Engine.
e) What Is Equivalence Ratio?
0 Compute Bmep Of Four Cylinder 2 Stroke Engine, 100 Mm Bore , 125 Mm Stroke When It Develops A Torque Of 490
N In.
g) By What Process Crude Oil Is Separated Into Gasoline , Kerosene And Fuel Oil?
h) Why Additives Are Added In Lubricants?
i) What Is Catalytic Convertor?
j) What Is Mean Effective Pressure?
SECTION B
2. Attempt any three of the following: 10 X 3 = 30
a) Show That For MaX Work/Kg Of Air In Otto Cycle For A Given Upper And Lower Temperature Of T3&T1 The
Temperature At The End Of Compression T2 And The End Of Expansion T4 Are Equal & Are Given By
T2 =T4 =(T1T3)?2
b) What Are The Type Of Combustion Chamber Used In C.I Engines?
c) Explain Ignition Lag In 8.1 Engine? Discuss The Effect Of Engine Variables On Ignition Lag.
d) Compare The Otto And Diesel Cycle For Same Maximum Pressure And Heat Input & Same Compression Ratio And Heat
Rejection.
e) Prove That Mean Effective Pressure :0th AP)/(r-1)(}/-1)
SECTION C
3. Attempt any one part of the following: 10 X 1 = 10
a) What Do You Understand By Surging And Stalling In An Axial Flow Compressor?
b) Explain The Working Of Thermos Syphon Coling System With Neat Sketch.
4. Attempt any one part of the following: 10 X 1 = 10
a) Discuss The Effect Of Gasoline Volatility On Cold Starting, Hot Starting, Warm Up And Vapour Look. What Is The
Performance Number And Diesel Index?
b) Write Short N otes On ?Root Blowers With Diagram , Exhaust Blow Down .
5. Attempt any one part of the following: 10 X 1 = 10

a)
b)
a)
b)
a)
What Is Crankcase Ventilation & Its Type?
Explain Biogas Plant With Proper Diagram.
Attempt any one part of the following: 10 X 1 = 10
Describe The Operation Of Any Two Types Of Modern Fuel Injection System With Sketch And Also Explain Working
Of Pintle Nozzle And Pintaux Nozzle With Sketch.
Prove That In Case Of Reciprocating Compressor The Condition For Minimum Work Per Kg Of Air Delivered By Its
Two Stage With Inter-cooling Is Achieved When Intermediate Pressure Is Geometric Mean Of Suction Pressure And
Final Delivery Pressure.
Attempt any one part of the following: 10 X 1 = 10
Explain Willan?s Line And Morse Test.
Derive An Expression For Mean Effective Pressure For Diesel Cycle