Download VTU B-Tech/B.E 2019 June-July 1st And 2nd Semester 2015 June-July 14EME14 Elements of Mechanical Engineering Question Paper

Download VTU ((Visvesvaraya Technological University) B.E/B-Tech 2019 July ( Bachelor of Engineering) First & Second Semester (1st Semester & 2nd Semester) 2015 June-July 14EME14 Elements of Mechanical Engineering Question Paper

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14EME14/24
First/Second Semester B.E. Degree Examination, June/July 2015
Elements of Mechanical Engineering
Time: 3 hrs. Max. Marks:100
Note: Answer FIVE full questions, selecting
ONE full question from each part.
PART ? A
1 a. What are the advantages and disadvantages of renewable and non renewabl
sources?
b. What is calorific value? Compare biofuels with petroleum fuels in terms of mice
(05 Marks)
c. Explain with neat sketch, working of Babcock and Wilcox boiler. (10 Marks)
2 a. Explain briefly the principle of conversion of solar energy directly irotttlectrical energy in
a solar cell. (10 Marks)
b. Write a short note on wind energy and its conversion.
PART ? B
3 a. Differentiate between reaction and impulse turbines.
b. With neat sketch explain the working of pelton wheel.
c.
4 a.
b.
C.
compound rest. (08 Marks)
What is milling? With neat sketch eXplain end milling and plane milling operations.
(06 Marks)
Differentiate between: (i) fainter sinking and counter boring, (ii) Reaming and Boring.
(06 Marks)
Define Robot. Wri classification based on robot physical configuration. Write down
the applications ustrial robot. (08 Marks)
What is autorhil ? Explain the types of automation with examples. (07 Marks)
c. With block ditgram explain basic components of NC system. (05 Marks)
PART ? D
7 a. What are ferrous metal? Write a note on stainless steel. Write down its applications.
(08 Marks)
b. Differentiate between ferrous and non ferrous materials. (06 Marks)
cs_N, b. Differentiate between welding, Brazing and soldering.
A
N
AL Define welding. Explain electric arc welding process. Write down its demerits.
c
is soldering? Classify soldering process.
(06 Marks)
(08 Marks)
(06 Marks)
c. Define composite materials. Write down its practical applications. (06 Marks)
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arks)
atm.
5 a.
b.
c.
a.
b.
Differentiate between petrol engine and diesel engin
With neat sketch explain working of 4 stroke di engine.
With neat sketch explain the working of close
a
e gas turbine. 4,
Define : Thermal efficiency and mechanical ciency of IC engine.
(TART ? C
operations c Name the various swivelling t on lathe. Explain taper turning by
(10 Marks)
(05 Marks)
(10 Marks)
(05 Marks)
(10 Marks)
(06 Marks)
(04 Marks)
C.
,

C
CJ
C
PART ? E
What are the required properties of a good refrigerant? (06 Marks)
With neat sketch explain the working of vapour compression refrigeration system. (10 Marks)
What is a air conditioning? Why it is necessary? (04 Marks)
Define : (1) Refrigeration effect (ii) Unit of Refrigeration (iii) COP of Refrigeration.
(06 Marks)
List the commonly used refrigerants. (04 Marks)
Explain with neat sketch the principle of room air-conditioner. (10 Marks)
* * * * *
9 a.
b.
c.
10 a.
b.
c.
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