D B1D007 Total Pages:2

Reg. No. Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST SEMESTER B.TECH DEGREE EXAMINATION, JANUARY 2017

Course Code: BE101-02
Course Name: INTRODUCTION TO MECHANICAL ENGINEERING SCIENCES

Max. Marks: 100 Duration: 3 Hours
PART A
Answer any two questions completely

1. 8. What are the limitations of the first law of thermodynamics? How are these
limitations addressed by the second law of thermodynamics? (4)
b. An inventor is claiming to have developed an engine that produces 110 kW of
power by absorbing heat at the rate of 200 kJ/s. Is this claim valid if the engine
operates between 500 °C and 100 °C? (4)

€, Differentiate between renewable and non-renewable sources of power with

examples for each. (4)
d. Explain the working principle of chemical rockets. (3)
2. a. What is a Carnot engine? What is its significance? Why is it not practical? (6)

b. State any one application each of zeroth law, first law and second law of

thermodynamics. (3)
c. Give any 3 applications of IC engines. (3)
d. Mention three significant events in Indian space programme. (3)
3. a. What is meant by available energy and irreversibility? (4)

b. List three historically significant events in the development of steam engines. (3)
c. With the aid of a diagram, explain the working of a two stroke petrol engine. (5)

d. List any 2 types of air compressors and their applications. (3)

PART B

Answer any two questions completely

4. a. Explain the different types of refrigerated storage. (3)
b. Differentiate between refrigeration and air-conditioning. (3)
௦. What are the applications of refrigeration in chemical and process industries? (5)
d. Explain the function of cooling system and ignition system in an automobile. (4)
5. a. List two important events in the history of refrigeration. (2)

b. Define (i) Dew point temperature (ii) Specific Humidity and (iii) Relative humidity
(3)

Page 1 of 2