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SN 9 एफ मे ಟಿ ‏سم‎

12.

13.

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

FIRST SEMESTER B.TECH DEGREE SPECIAL EXAMINATION, SEPTEMBER 2016
Course Code: BE101-02

Course Name: INTRODUCTION TO MECHANICAL ENGINEERING SCIENCES
Max. Marks: 100 Duration: 3 Hours
PARTA

Answer ALL questions. Each question carries 3 marks

Carnot engine cannot find practical significance. Why?

Why are piston heads of two stroke engines made crown shaped?
Define Humidity ratio and Relative humidity.

Explain function of clutch in an automobile

What is Kutzbach criteria?

Give the significance of factor of safety in designing.
Differentiate between alloys and composites.

Briefly explain agile manufacturing.
PART B
Answer any 2 complete questions from each module
MODULE 1
Explain the working of Carnot engine with P-V and T-S diagrams (6)
a) Explain the concept of thermodynamic equilibrium (3)

४) State the first law of thermodynamics for a closed system undergoing a cycle. In a cyclic
process, heat transfers are +۱47 kJ, -25.2 kJ, -3,56%1 and +31.5 kJ. What is the net work for this
cyclic process? (3)

An inventor claims to have created an engine which produces useful work from the internal
energy of the atmosphere. Discuss the validity of his claim by stating the relevant laws of

thermodynamics. (6)
MODULE 2

What are hydraulic turbines? Differentiate between hydraulic turbines, gas turbines and steam

turbines. (6)

Differentiate between two stroke and four stroke engines (6)