Download VTU ((Visvesvaraya Technological University) B.E/B-Tech 2019 July ( Bachelor of Engineering) First & Second Semester (1st Semester & 2nd Semester) 2018 Jan 2017 Dec 17E1 1E14 Elements of Mechanical Engineering Question Paper
USN'
17E1\1E14
First Semester B.E. Degree Examination, Dec.2017/Jan.2018
Elements of Mechanical Engineering
Time: 3 hrs. Max. Marks: 100
Note: Answer FIVE full questions, choosing one full question from each module.
?
Module-1
- - -1- - ? ? a: ? ? Write
.
the differences between Renewable and Non-Renewable energy resources. (06 Marks)
... 4)
0
b _Explain liquid
.
flat
.
plate-cplleCtor with neat sketch. _ - (06 Marks)
0--
..... ?- c:
---
Explain iiiiiiCiPle'OrNikle
7
af
..
iioWei jildift With neat sketch. 08
.
1iilarki)
rA ?
o) x
y
ctt _
-f
-
R? ,
. _ ..... OR
Tz, '') -
.. Explain the formation of stearn.With T4-1 diagram. V (08 Marks)
T
cc -
.G ?
to II
b. Explainthe construction and rfcifii
.
'4.",aneashire Boiler". * / (08 Marks)
71 - -,i- ? - - -
,
c._ _ What are boiler. mountings..and acceSSOries?-,Liitexamples of each . . (04 Marks)
.=
a
: ... .
L 4)
=
O c
Module-2
-
-
-LI
-
-
-
-:-
-
----
-
-rZ-:
-- -
3:
-
-
-
a
-
. =E,;flaira DrA7*
-
vahurtdrol
-
wittrneut*etzlvan
-
d
-
-PretsaTreAtelocity
--
cliffgram;
--
_
-
-
7
-
-
(06
-
Marks)
=
?
=
b. Explain the open cycle gas turbine With block diagram. (06 Marks)
,7
m
c. The following observations were Inade -
-
during a trial run on a four stroke diesel engine:
0 ") =
t F
Cylinder diameter = 25 cm
c.
?
----
Stroke of the piston = 40 cm
oo
0 -0
=
o 0
i 'Crank shaft speed = 250 rpm.
-70 -
Brake
-
.load = 70 kg
.;11 ?
,
Brake drum diameter - 2 rn . .
.
>
- i_) Mean effective pressure = 6, Bar
0
?
,.
-
,,, _ Diesel oil consumption =..0.1 litre/min
-
5 8
Specific gravity of diesel = 0.78
Pc i
Calorific value of diesel = 43900 kJ/kg ,., ?-?
if .2
?
8
Find : (i) Brake
,
power (ii) Indicated power (iii) Friction power (iv) Mechanical
efficiency (v) Brake thermal efficiency (vi) Indicated thermal efficiency. (08 Marks)
cd
?
-'
4.,
O ?
OR
to 0
? a
a tw
4 a. Explain -construction and working of Four stroke SI engine with neat sketch and P-V
t =
a zd,
diagram. (08 Marks)
g ?
a 5 b. Explain the working of Pelton wheel with neat sketch.
Q
(08 Marks)
Module-3
5 a. Explain the taper turning by swivelling compound tool rest. (06 Marks)
b. List the various operations performed on drilling machine. Explain with the neat sketches
Boring and counterboring operations. (10 Marks)
c. What is milling? Differentiate drilling and milling operation. (04 Marks)
8
a
C. Define : (i) Steam turbine (ii) Internal combustion engine. (04 Marks)
Important Note
1 of 2
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USN'
17E1\1E14
First Semester B.E. Degree Examination, Dec.2017/Jan.2018
Elements of Mechanical Engineering
Time: 3 hrs. Max. Marks: 100
Note: Answer FIVE full questions, choosing one full question from each module.
?
Module-1
- - -1- - ? ? a: ? ? Write
.
the differences between Renewable and Non-Renewable energy resources. (06 Marks)
... 4)
0
b _Explain liquid
.
flat
.
plate-cplleCtor with neat sketch. _ - (06 Marks)
0--
..... ?- c:
---
Explain iiiiiiCiPle'OrNikle
7
af
..
iioWei jildift With neat sketch. 08
.
1iilarki)
rA ?
o) x
y
ctt _
-f
-
R? ,
. _ ..... OR
Tz, '') -
.. Explain the formation of stearn.With T4-1 diagram. V (08 Marks)
T
cc -
.G ?
to II
b. Explainthe construction and rfcifii
.
'4.",aneashire Boiler". * / (08 Marks)
71 - -,i- ? - - -
,
c._ _ What are boiler. mountings..and acceSSOries?-,Liitexamples of each . . (04 Marks)
.=
a
: ... .
L 4)
=
O c
Module-2
-
-
-LI
-
-
-
-:-
-
----
-
-rZ-:
-- -
3:
-
-
-
a
-
. =E,;flaira DrA7*
-
vahurtdrol
-
wittrneut*etzlvan
-
d
-
-PretsaTreAtelocity
--
cliffgram;
--
_
-
-
7
-
-
(06
-
Marks)
=
?
=
b. Explain the open cycle gas turbine With block diagram. (06 Marks)
,7
m
c. The following observations were Inade -
-
during a trial run on a four stroke diesel engine:
0 ") =
t F
Cylinder diameter = 25 cm
c.
?
----
Stroke of the piston = 40 cm
oo
0 -0
=
o 0
i 'Crank shaft speed = 250 rpm.
-70 -
Brake
-
.load = 70 kg
.;11 ?
,
Brake drum diameter - 2 rn . .
.
>
- i_) Mean effective pressure = 6, Bar
0
?
,.
-
,,, _ Diesel oil consumption =..0.1 litre/min
-
5 8
Specific gravity of diesel = 0.78
Pc i
Calorific value of diesel = 43900 kJ/kg ,., ?-?
if .2
?
8
Find : (i) Brake
,
power (ii) Indicated power (iii) Friction power (iv) Mechanical
efficiency (v) Brake thermal efficiency (vi) Indicated thermal efficiency. (08 Marks)
cd
?
-'
4.,
O ?
OR
to 0
? a
a tw
4 a. Explain -construction and working of Four stroke SI engine with neat sketch and P-V
t =
a zd,
diagram. (08 Marks)
g ?
a 5 b. Explain the working of Pelton wheel with neat sketch.
Q
(08 Marks)
Module-3
5 a. Explain the taper turning by swivelling compound tool rest. (06 Marks)
b. List the various operations performed on drilling machine. Explain with the neat sketches
Boring and counterboring operations. (10 Marks)
c. What is milling? Differentiate drilling and milling operation. (04 Marks)
8
a
C. Define : (i) Steam turbine (ii) Internal combustion engine. (04 Marks)
Important Note
1 of 2
17E1'4E14
OR
a. Define automation and explain the flexible automation. (06 Marks)
b. Define Robot and write the classification of robot based on physical configuration. Explain
the Cartesian co-ordinate robot with neat sketch. (08 Marks)
c. With the block diagram, explain the basic elements of NC automation system. (06 Marks)
,. ,?.
Module-4
7 a. Write a note on ferrous alloys (any two). (08 Marks)
b. Define composite material. Mention its applications in aerospace and automation industries.
(06 Marks)
c. Briefly explain types of non-ferrous alloys (any two). (06 Marks)
OR
8
--
a.
-.
ExPlain with neat sketch the are welding Method: (08 Marks)
b. List the different types of Oxy-acetylene flames and state their applications. (06 Marks)
c. -- Define : welding, brazing and soldering. (06 Marks)
Module-5.
? I
_ 9___ __Usti: tut the desirable_ pro perties,ofirkgpodxefrigerant ............ ? _ _ (06 Marks)
b. Explain the principle and working of vapour compression refrigeration with neat sketch.
(08 Marks)
-I he- foi-troking-44?J4efrimatiqt?Oltir- eo natiotii (jay Reit
-
iguarit__ 06 Marks)
OR
10 a. Explain with a neat sketch, working of "room air conditioner. (08 Marks)
b. What are the differences between vapour compression and absorption systems? t,,08 Marks)
c. List out refrigerants commonly used in practice. (04 Marks)
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This post was last modified on 01 January 2020