Cochin University of Science and Techology (CUST) 2003 B.Tech Civil Engineering Mechanical Engineering - Question Paper
BTS(C) I & II - 03 - 526(B)
B.Tech. Degree I & II Semester (Combined) Examination June 2003
IT/CS/EC/CE/ME/SE/EB/EI/EE/MRE 107 FUNDAMENTALS OF ENGINEERING I
(1998 Admissions onwards)
Time: 1 Vi Hours Maximum Marks: 50
I. (a) Describe open, closed and isolated systems. . (6)
(b) Write down the equation of state of a perfect gas. What is Universal Gas Constant? (4)
(c) 1.3m3 of air at 0. IMPa is compressed isothermally to 0.7MPa. Find the work done
during the process. 0)
OR
U. (a) Explain:
(i) Free expansion
(ii) Throttling expansion (6)
(b) State the first law of thermodynamics as applied to an open system. (4)
(c) A gas enters a steady flow compressor at 25C, 0.1 MPa and an enthalpy of 395KJ/Kg.
The gas leaves the compressor at 250C, 0.6MPa and an enthalpy of 540KJ/Kg. Estimate the work done per Kg of gas. (7)
HI. (a) Obtain the air standard efficiency of the Diesel cycle. (10)
(b) A diesel engine has a compression ratio of 15. The cut off takes place at 6% of the
stroke. Find the air standard efficiency. (7)
OR
IV. (a) Describe the working of a four stroke petrol engine. (9)
(b) With the help of sketches, describe the ignition system used in a six-cylinder
petrol engine. (8)
V. (a) Explain the following terms in respect of steam:
(i) Saturation temperature
(ii) Dryness fraction
(iii) Enthalpy and
(iv) Specific volume (8)
(b) Describe with a neat sketch, the working of a Cochran Boiler.
OR
VI. (a) What are boiler mountings and accessories? Describe any three of I
(b) How are steam turbines classified? Describe witha neat sketch, jfoWorJprfgof d simple impulse turbine with velocity compounding.
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