Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem New 2132603 Thermodynamics Of Elastomers And Polymers Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132603 Date: 12/12/2018
Subject Name: Thermodynamics of Elastomers & Polymers
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.
MARKS
Q.1 (a) State zero and first law of Thermodynamics. 03
(b) Define the following terms: System, Heat of Reduction,
Enthalpy, and Thermodynamics.
04
(c) Write down the construction and working principle of
Bombs calorimeter with diagram.
07
Q.2 (a) A man whose weight is 500 N takes 2 min. for climbing up
a staircase. What is the power developed in him if the
staircase is made up of 50 stairs each 0.5 m in height.
03
(b) Give difference between Extensive properties & Intensive
properties.
04
(c) Derive any three expressions of Maxwell?s thermodynamic
relations.
07
OR
(c) Explain in detail about concept of ceiling temperature. 07
Q.3 (a)
Define Carnot Engine. State Carnot?s theorem.
03
(b) Define the term ?Fuel?. Give difference between Liquid
Fuel and Gaseous Fuel.
04
(c) Prove that: PV
?
= constant for adiabatic process. 07
OR
Q.3 (a) Discuss the Concept of reversible process & irreversible
process.
03
(b) A coal has the following composition by weight: C=90%;
O=3.0%; S=0.5%; N=0.5% and ash=2.5% .Net calorific
value of the coal was found to be 8,490.5kcal/kg. Calculate
the percentage of hydrogen and Higher calorific value of
coal.
04
(c) List the characteristics of a good fuel. 07
Q.4 (a) Write the difference between homogeneous process &
heterogeneous process.
03
(b) Define the term: ?Calorific value?. Explain any three units
of heat.
04
(c) Write a detailed note on Estimation of heat of
polymerization.
07
OR
Q.4 (a) Write any three limitations of first law of thermodynamics. 03
(b) Explain the Rotation barrier of polymer chain flexibility.
___P.T.O.___
04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132603 Date: 12/12/2018
Subject Name: Thermodynamics of Elastomers & Polymers
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.
MARKS
Q.1 (a) State zero and first law of Thermodynamics. 03
(b) Define the following terms: System, Heat of Reduction,
Enthalpy, and Thermodynamics.
04
(c) Write down the construction and working principle of
Bombs calorimeter with diagram.
07
Q.2 (a) A man whose weight is 500 N takes 2 min. for climbing up
a staircase. What is the power developed in him if the
staircase is made up of 50 stairs each 0.5 m in height.
03
(b) Give difference between Extensive properties & Intensive
properties.
04
(c) Derive any three expressions of Maxwell?s thermodynamic
relations.
07
OR
(c) Explain in detail about concept of ceiling temperature. 07
Q.3 (a)
Define Carnot Engine. State Carnot?s theorem.
03
(b) Define the term ?Fuel?. Give difference between Liquid
Fuel and Gaseous Fuel.
04
(c) Prove that: PV
?
= constant for adiabatic process. 07
OR
Q.3 (a) Discuss the Concept of reversible process & irreversible
process.
03
(b) A coal has the following composition by weight: C=90%;
O=3.0%; S=0.5%; N=0.5% and ash=2.5% .Net calorific
value of the coal was found to be 8,490.5kcal/kg. Calculate
the percentage of hydrogen and Higher calorific value of
coal.
04
(c) List the characteristics of a good fuel. 07
Q.4 (a) Write the difference between homogeneous process &
heterogeneous process.
03
(b) Define the term: ?Calorific value?. Explain any three units
of heat.
04
(c) Write a detailed note on Estimation of heat of
polymerization.
07
OR
Q.4 (a) Write any three limitations of first law of thermodynamics. 03
(b) Explain the Rotation barrier of polymer chain flexibility.
___P.T.O.___
04
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2
(c) Short note on Thermodynamic investigation of polymer-
polymer systems for three component systems.
07
Q.5 (a) Derive the Expression for relation between pressure ?
volume and work.
03
(b) A man circling the earth in a spaceship weighed 300 N at
location there the local gravitational acceleration was 4.4
m/s
2
.Calculate the mass of the man and his weight on the
earth.
04
(c) Explain the working principal, construction & calculation
of Junker?s gas calorimeter with sketch.
07
OR
Q.5 (a) What are the factors responsible for spontaneity of a
reaction?
03
(b) List four important possibilities of Phase Rule. 04
(c) On burning 0.40gm of a solid fuel in a bomb calorimeter,
the temperature of 2000gm of water increased from 20.5
0
C
to 22.2
0
C.water equivalent of calorimeter and latent heat of
steam are 385g and 587cal/g respectively. If the fuel
contains 0.25% hydrogen, calculate its gross and net
calorific value.
07
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This post was last modified on 20 February 2020