Q2. For adiabatic process derive PVγ = constant.

This is question 2 (4 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Elements Of Mechanical Engineering | B.E. Semester I Winter 2019 | GTU Papers

Q: Q1. What do you mean by non-conventional energy sources? How does it differ from conventional sources?

This is question 1 (3 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q1. Define : (i) Sensible heat (ii) Enthalpy of evaporation (iii) Heat of superheat (iv) Dryness Faction.

This is question 1 (4 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q1. 2 kg of gas is compressed from 1 bar and 30 0C according to the law PV1.3 = C. The pressure after compression is 6 bar. Calculate (1) Characteristic Gas Constant (2) Temperature at the end of compression (3) Work done (4) Heat supplied (5) Change in internal Energy. Take molecular mass of gas = 30, C = 1.75 kJ/kg K. p

This is question 1 (7 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q2. Explain the steam formation at constant pressure.

This is question 2 (3 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q2. Determine the quality of steam for the following cases: (1) P= 10 bar, v= 0.180 m3/kg (2) P= 10 bar, t = 200 0C (3) P= 25 bar, h = 2750 kJ/kg

This is question 2 (7 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q3. Give comparison of belt drive, Chain drive and gear drive.

This is question 3 (3 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q3. Differentiate between petrol engine and diesel engine.

This is question 3 (4 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q3. Asix cylinder four stroke IC engine is to develop 89.5 KW indicated power at 800 rpm. The stroke to bore ratio is 1.25:1. Assuming mechanical efficiency of 80% and brake mean effective pressure of 5 bar, determine the diameter and stroke of the engine.

This is question 3 (7 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Q: Q4. Derive equation for air standard efficiency of Otto cycle.

This is question 4 (7 marks) from the GTU Elements of Mechanical Engineering BE Winter 2019 question paper. Subject code: 110006.

Questions17

What do you mean by non-conventional energy sources? How does it differ from conventional sources?

[3 marks]

Define : (i) Sensible heat (ii) Enthalpy of evaporation (iii) Heat of superheat (iv) Dryness Faction.

[4 marks]

2 kg of gas is compressed from 1 bar and 30 0C according to the law PV1.3 = C. The pressure after compression is 6 bar. Calculate (1) Characteristic Gas Constant (2) Temperature at the end of compression (3) Work done (4) Heat supplied (5) Change in internal Energy. Take molecular mass of gas = 30, C = 1.75 kJ/kg K. p

[7 marks]

Explain the steam formation at constant pressure.

[3 marks]

For adiabatic process derive PVγ = constant.

[4 marks]

Determine the quality of steam for the following cases: (1) P= 10 bar, v= 0.180 m3/kg (2) P= 10 bar, t = 200 0C (3) P= 25 bar, h = 2750 kJ/kg

[7 marks]

Give comparison of belt drive, Chain drive and gear drive.

[3 marks]

Differentiate between petrol engine and diesel engine.

[4 marks]

Asix cylinder four stroke IC engine is to develop 89.5 KW indicated power at 800 rpm. The stroke to bore ratio is 1.25:1. Assuming mechanical efficiency of 80% and brake mean effective pressure of 5 bar, determine the diameter and stroke of the engine.

[7 marks]

Derive equation for air standard efficiency of Otto cycle.

[7 marks]

Determine the compression ratio, The cycle efficiency, and the ratio of maximum to minimum pressure in an air standard Otto cycle from following data: Minimum temperature 25 0C, Maximum temperature 1500 0C Take C = 0.718 kJ/kg Kand 1.4 v

[7 marks]

Classify centrifugal pumps. With neat sketch explain the function of each part of centrifugal pump.

[7 marks]

With neat sketch describe the construction and working of Babcock and Wilcox boiler.

[7 marks]

What is refrigeration? Explain the working of vapour compression refrigeration cycle. Name basic components of VCRC.

[7 marks]

What are the applications of compressor? Derive an expression of work done for single stage single acting reciprocating air compressor without clearance.

[7 marks]

What are belt drives? List various belt drives and explain cross belt drive.

[7 marks]

What is the difference between ferrous and nonferrous materials? List out various ferrous and nonferrous materials with their application.1

[7 marks]

Elements of Mechanical Engineering — Winter 2019

Questions17

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