KHALSA COLLEGE OF ENGINEERING AND TECHNOLOGY, AMRITSAR
DEPARTMENT OF MECHANICAL ENGINEERING
6
Program
B. Tech (ME)
Semester
Heat Transfer
BTME-602
Subject Code
Subject Title
Harpreet Singh
Mid Sessional Test
1
Course Coordinator(s)
(MST ) No.
24
1Hour 30 Minutes
Max Marks
Time Duration
13Feb
2020(E)
Date of MST
Roll Number
Q. No.
Questions
Marks
Section A (Attempt all questions)
a. Define Fourier Law.
2
Q1.
Q2.
Q3.
Q4.
Q5.
Q6.
b. How does heat transfer differs from Thermodynamics?
2
c. Define thermal diffusivity and thermal resistance.
2
d. Define steady and unsteady heat transfer.
2
Section B (Attempt any two)
A plane wall of 10 cm thickness and 3 m2 area is made of a material
whose conductivity is 8.5 W/mK. The temperatures of the wall surfaces
are steady at 100°C and 30°C respectively. Find the temperature gradient
and heat flow across the wall.
Explain guarded hot plate method.
A plane slab of thickness δ = 60 cm is made of a material of thermal
conductivity k = 17.5 W/m-deg. The left side of the slab absorbs a net
amount of radiant energy from a radiant source at the rate q = 530
watt/m2. If the right hand face of the slab is at a constant temperature t2
= 38°C, set up an expression for temperature distribution within the slab
as a function of relevant space co-ordinates. Therefrom work out the
temperature at the mid- plane of the slab and the maximum temperature
within the slab. It may be presumed that the temperature distribution is
steady and there is no heat generation.
Section C (Attempt any One)
Prove that 3 dimensional conduction equation in Cartesian coordinate for
homogeneous material , steady state conditions and without heat
generation is given by laplace equation=Δ2=0
A homogeneous wall of area A and thickness δ has left and right hand
surface temperatures of 0 degree Celsius and 40 degree Celsius.
Determine the temperature at the center of the wall.
How much material must be added and to which side of the wall if the
temperature at the cente is to be raised by 5°C?
4
4
4
8
8
DEPARTMENT OF MECHANICAL ENGINEERING
B.Sc. Agriculture
Semester
Program
Subject Code
Mid Sessional Test
(MST ) No.
Max Marks
Date of MST
Q. No.
BSAG-408
1
Subject Title
Course Coordinator(s)
24
Time Duration
15Feb 2020(E)
Roll Number
Questions
Section A (Attempt all questions)
a. State the function of piston rings.
Q1.
4
Farm Power &
Machinery
Harpreet Singh
1Hour 30 Minutes
Marks
2
b. Explain function of spark plug?
2
c. What is the difference between 2 stroke and 4 stroke engine .
2
d. What is the function of lubrication system?
2
Section B
Q2.
Explain the working 4 stroke engine with suitable sketch
4
Q3.
Explain various types of engine components.
4
Section C
Q5.
Explain the working 2 stroke engine with suitable sketch?
8