Cochin University of Science and Techology (CUST) 2005-2nd Sem B.Tech Computer Science and Engineering I &,, FUNDAMENTALS OF ENGINEERING I (B) MECHANICAL ENGINEERING - Question Paper

B.Tech Degree I & II Semester Examination, June 2005
FUNDAMENTALS OF ENGINEERING I (B) MECHANICAL ENGINEERING

Time: 1½ Hours Maximum Marks: 50

I a) discuss the subsequent with regard to thermodynamic system:
(1) State
(2) Property
(3) Process
(4) Cycle [Marks 8]
b) 0.02 m³ of air at 600°C and seven bar expands reversibly and adiabatically to 4 times its quantity. obtain (1) the final temperature and (2) the work done. [Marks 9]
OR
II (a) What is Zeroth legal regulations of thermodynamics? [Marks 3]
(b) provide the Kelvin Planck and Clausius statements of the 2nd legal regulations of thermodynamics, and prove their equivalence. [Marks 7]
(c) discuss Carnot’s cycle and find an expression for the efficiency of a Carnot’s engine. [Marks 7]

III (a) discuss the Brayton cycle and its applications. [Marks 8]
(b) Compare two-stroke and four-stroke engines. [Marks 9]
OR
IV a) Prove that the air standard efficiency of Otto cycle is higher than that of diesel cycle having the identical compression ratio. [Marks 10]
b) What is the function of a carburetor? define with sketch a sample carburetor used in petrol engine. [Marks 7]

V a) obtain the saturation temperature, specific quantity and specific enthalpy of steam 0.85 dry at 1Mpa. [(Marks 8]
b) define the working of a high pressure Benson boilers. [Marks 8]
OR
VI a) Distinguish ranging from fire tube and water tube boilers. [Marks 4]
b) Why is compounding needed in steam turbines? [Marks 4]
c) define with sketches a pressure-velocity compounded turbine. [Marks 8]


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Earning:   Approval pending.