Download AKTU B-Tech 5th Sem 2015-2016 I.C. Engines Compressors Nme 505 Question Paper

I. Write the formula for the illness of Otto and Diesel cycle.

(g) Derive P-V & T-S diagrams for Air Standard Efficiencies

(h) What is the origin of pollution in internal combustion?

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(i) State various types of injection system.

(j) What do you mean by Blow down losses?

Section-B

Attempt any three questions from this section. (3x10=30)

1. Compare two stroke and four stroke diesel engines.

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2. State compression ratio with their result
3. State different pressure and forces required.
4. Write short notes on knocking and rating.
5. Write short notes on exhaust back auction control.
6. Following data relate to 2 cylinder, 2 stroke petrol engine:
   • Fuel used by weight per hour.

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   • Calorific value
   • Air fuel ratio by weight.
   • 23% Relative efficiency
   • Ambient air temperature.
   • Compression ratio.

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   Find:

   1. i) Volumetric efficiency.
   2. ii) Thermal efficiency.
   3. Compression ratio.
   4. Break specific fuel consumption in.

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   5. Break specific fuel consumption in
7. Draw and explain the indicator diagram for Dual Cycle with V, P & T, & S Diagram.
8. Why multistage compression is necessary. Explain the working of multistage compression with intercooler with neat sketch.
9. Prove that for same amount of compression, the work done on the air for two stage compressor with incomplete cooling will be less than that of for single stage compressor from the same suction and delivery pressure.
   

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   Pa-P
   Where P Delivery pressure.
   P Suction pressure.
10. What do you mean by supercharging? Explain types of supercharging. what are its advantages & supercharging is applied. Explain its effects on detonation an engine output.

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