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Download GTU BE/B.Tech 2017 Winter 3rd Sem Old 133401 Thermodynamics And Thermal Engineering Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 3rd Sem Old 133401 Thermodynamics And Thermal Engineering Previous Question Paper

This post was last modified on 20 February 2020

This download link is referred from the post: GTU BE/B.Tech 2017 Winter Question Papers || Gujarat Technological University


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Subject Code: 133401

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE - SEMESTER-III (OLD) EXAMINATION — WINTER 2017

Subject Name: Thermodynamics and Thermal Engineering

Date: 14/11/2017

Time: 10:30 AM to 01:00 PM

Total Marks: 70

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Instructions:

  1. Attempt all questions.
  2. Make suitable assumptions wherever necessary.
  3. Figures to the right indicate full marks.

Q.1 (a) Derive the expressions of efficiency in Otto Cycle. 07

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(b) Define Ideal and non-ideal gas. How do they differ with each other in their behaviour? Explain the entropy change of an ideal gas. 07

Q.2 (a) Define the following: 07

  1. Emissivity
  2. Stefan-Boltzmann Law
  3. Wien’s Displacement Law
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(b) Explain the various types of Heat Exchangers. 07

OR

Q.2 (a) Describe briefly about the following processes: 07

  1. Sensible heating
  2. Cooling and dehumidification
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(b) Define entropy and irreversibility. Discuss their relationships. 07

Q.3 (a) Explain the working of single-stage reciprocating air compressor with a neat sketch. 07

OR

Q.3 (a) Derive the equation for conduction of heat through a plane wall. 07

(b) Explain PVT behaviour of pure substances with the help of PT and PV diagrams. 07

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Q.4 (a) Derive the equation for conduction of heat through a radial wall. 07

(b) Briefly explain the following: 07

  1. Parallel-flow heat exchangers.
  2. Counter-flow heat exchangers.

OR

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Q.4 (a) Compare Vapour Compression Refrigeration System with Vapour Absorption System. 07

(b) Define the following terms: 07

  1. Dew point temperature
  2. Relative humidity
  3. Specific humidity.
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Q.5 (a) Explain Fourier’s Law of Heat Conduction and Explain Thermal Resistance. 07

(b) Calculate the percentage loss in ideal efficiency of a diesel engine with compression ratio 14, if the fuel cut-off is delayed from 5% to 8%. 07

OR

Q.5 (a) Compare the efficiency of Otto, diesel and dual cycle for same compression ratio and heat rejection with help of p-v and T-S diagram. 07

(b) Write down the properties of refrigerant in detail. 07

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This download link is referred from the post: GTU BE/B.Tech 2017 Winter Question Papers || Gujarat Technological University

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