Visvesvaraya Technological University (VTU) 2007 B.E Electrical and Electronics Engineering Model EME3 - Question Paper

ELEMENTS OF MECHANICAL ENGINEERING
Model ques. paper No.3
I / II Semester B.E. Degree exam (Common to all Branches)
Prepared at the VTU Workshop on CAED, EME & Workshop Laboratory
held on 14th September 2006 at the Department of Mechanical Engineering, M.C.E, Hassan
Sub Code : 06 EME 14 / 06 EME 24 Marks: 100

Note:
1.Answer any 5 full ques. choosing at lowest 2 ques. from part A & 2 ques. from part B
2 .Use of steam tables is permitted
PART-A
1. (a) discuss any 2 non-convention sources of energy 05 Marks
(b) discuss briefly the various states of steam with the help of diagram 05 Marks
(c) discuss with a neat sketch Lancashire boiler. 10 Marks
2. (a) How the steam turbines are classified? Write the differences ranging from them. 05 Marks
(b) discuss with sketch the closed cycle gas turbine 05 Marks
(c) Write the important points in the selection of water turbines. discuss the working of impulse turbine. 10 Marks
3. (a) Name the thermodynamic cycle of diesel engine. Draw the PV diagram of the identical indicating different process 05 Marks
(b) discuss with sketch 4 stroke diesel engine 05 Marks
(c) provided the subsequent details of four stroke of diesel engine, obtain the indicated power, brake power, friction power. Bore diameter is 200mm, stroke 300mm. mean effective pressure 0.3 MPa, brake drum dia 1.2m, net brake load 300 N, speed 400rpm. 10 Marks
4. (a) What is a refrigerant? elaborate the properties of a refrigerant? Name commonly
used refrigerants. 05 Marks
(b) describe the subsequent 1) ton of refrigeration, 2) COP, 3) Relative COP 05 Marks
(c) with sketch discuss the working principle of vapour compression refrigeration system 10 Marks

Earning:   Approval pending.