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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2017

Course Code: BE101-02

Course Name: INTRODUCTION TO MECHANICAL ENGINEERING SCIENCES

Max. Marks: 100

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PART A
Answer any two questions, each carries 15 marks.

Differentiate between intensive and extensive properties. Categories the following
properties into intensive or extensive.
i) Pressure ii) Energy iii) Volume iv) Specific entropy
Write the two statements for second law of thermodynamics along with the
applications.
Explain the working of two stroke - petrol engine with neat diagrams.
What are the applications of air compressors?
What is irreversibility? Explain the causes of irreversibility.
What is entropy? Explain the principle of increase of entropy.
If the availability of water is less and head is large. Suggest the name of turbine to
be installed at that site. With neat sketch explain the components and working of
that turbine.
What is a Carnot engine? Explain its significance with Carnot cycle.
Differentiate between impulse and reaction steam turbines.
What is the principle behind rocket propulsion? Mention any two significant events
in Indian space programme.
Differentiate between SI and CI engines.

PART B

Answer any two questions, each carries 15 marks.

What are the applications of refrigeration in process and chemical industries?
Define the following: i) Humidity ratio ii) Relative humidity iii) Dew point
temperature.
Write any 4 types of classification of automobiles with examples for each type.
Explain the aerodynamic forces with their significance in flight of a body.
Differentiate between refrigeration and air conditioning.
Explain summer air conditioning and winter air conditioning with diagrams.
Mention any four important automobile manufacturers in India and their products.
What are COP of refrigeration and unit of refrigeration?
What is psychrometry? Explain its significance with the help of psychrometric
chart.
Write the major components of automobiles with their functions.
With schematic diagram explain any two types of aircraft engines with their
applications.

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Duration: 3 Hours

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