Automotive Heating, Ventilation And Air Conditioning 2, Question Paper of B.Tech 6 Semester, Download Previous Years Question Paper 1

B.TECH. (AE)

(May-2014)

BTAE-602 : 

Automotive Heating, Ventilation 

And 

Air Conditioning

Time : 3 Hours                                                                                       Maximum Marks : 60

1.  Any four questions from Section - B and any two questions from Section - C.

SECTION-A

Q.1 (a) Define units of refrigeration?

(b) What are the functions of thermostat valve in AC system of a car?

(c) Draw the sketch of low pressure switch used in AC of an automobile?

(d) What is leak test?

(e) Write the reasons of non starting of a refrigerator?

(f) Define psychometry?

(g) Define dew bulb temperature?

(h) Name the different types of AC loads?

(i) What do you mean by charging and discharging of air conditioning system?

(i) Define ventilation?

SECTION - B

Q.2 Enlist the different types of refrigerants used for an automobile? Explain the latest refrigerant  used in AC's of automobiles?

Q.3 Explain velocity reduction method of duct design State its advantages and disadvantages.

Q.4 Why fog does appear in night hours in winter season and not in summer season? Show the process of fogging on the psychometric chart when two air steams are mixed together.

Q.5 Discuss with the help of neat sketches, the service schedule of AC of a car for trouble free working?

Q.6 Draw schematic of a thermostatic expansion valve? Explain its working?

SECTION - C

Q.7 (a) For the safety of Volvo buses, what precautions and care should be taken into care before designing its HVAC?

(b) What are the various possible causes of AC failure? Discuss their respective remedies also.

Q.8 Write the detailed procedure for estimating the cooling load of an AC bus with 52 seating capacity?

Q.9 Write short note on any two of the following

(a) Effect of refrigerants on ozone layer

(b) AC heating system

(c) Air flow circuit of an AC car