PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester AE Automobile Engineering?
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Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(AE) (2011 Onwards) (Sem.?6)
AUTOMOTIVE HEATING, VENTILATION & AIR CONDITIONING
Subject Code : BTAE-602
M.Code : 71218
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.
SECTION-A
1.
Answer briefly :
a. What do you mean by term air conditioning?
b. What is function of a capillary tube?
c. List two properties of ideal refrigerant.
d. What are eco-friendly refrigerants?
e. List various m www.FirstRanker.com
ethods of refrigerant leak detection.
f. What do you mean by wet bulb temperature?
g. Is moist air a pure substance, explain your answer?
h. What is saturated air?
i. What is purging of air in an air-conditioning system?
j. What is global warming potential?
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SECTION-B
2.
Explain the working of basic car air conditioning system.
3.
Troubleshoot the following causes :
a. Unit runs but poor refrigeration.
b. Low suction pressure in a refrigeration system.
4.
What are different types of automotive heater? Explain automatically controlled
air- conditioning heating system.
5.
Classify various types of refrigerants.
6.
Explain the various basic psychrometric properties of moist air.
SECTION-C
7.
Explain different types of air distribution system with help of neat sketch.
8.
Explain various methods of refrigerant leak detection.
9.
Explain the various properties of ideal refrigerant.
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NOTE : Disclosure of identity by writing mobile number or making passing request on any
page of Answer sheet will lead to UMC against the Student.
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This post was last modified on 04 November 2019