PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester AE Automobile Engineering?
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 :
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.
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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Explain the working of basic car air conditioning system.
Troubleshoot the following causes :
a. Unit runs but poor refrigeration.
b. Low suction pressure in a refrigeration system.
What are different types of automotive heater? Explain automatically controlled
air- conditioning heating system.
Classify various types of refrigerants.
Explain the various basic psychrometric properties of moist air.
Explain different types of air distribution system with help of neat sketch.
Explain various methods of refrigerant leak detection.
Explain the various properties of ideal refrigerant.
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