MAULANAAZAD NATIONAL INSTITUTEOF TECHNOLOGY BHOPAL
DEPARTMENT OF MECHANICAL ENGINEERING
END TERM EXAM (MAY-2023)
B. Tech IVSemester (Mechanical Engineering)
Mechanisms of Machines (ME 222)
Time: 3 Hours
Marks: 50
Instructions: Draw neat diagrams and mention suitable assumptions
wherever
necessary.
Q.
No.
Question
1.
Explain and compare Kutzbach criteria and Grublers
criteria while considering degree of freedom? Find the
degree of freedom for the figure given below?
2.
Marks Corresponding
The quick return motion mechanism is the inversion of
Co (s) & BT
(s)
5
CO 1, BT 1
10
CO 2, BT 3
single slider crank chain. In view of its industrial
importance explain its functioning with support of neat
sketch.
3
In a four bar chain ABCD, AD is fixed and is 150 mm long.
The crank AB is 40 mm long and rotates at 120 r.p.m.
clockwise,while the link CD = 80 mm oscillates about D.
BC and AD are of equal length. Find the angular velocity
of link CD when angle BAD = 60°.
150
80
40
Va
150
(All dimensions in mm)
CO 1, BT 3
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY BHOPAL
DEPARTMENT OF MECHANICAL ENGINEERING
END TERM EXAM (MAY-2023)
B. Tech IV Semester (Mechanical
Engineering)
Time: 3 Hours Mechanisms of Machines (ME 222)
4.
(a)
What is function of gear
mechanisms? Explain
the different types of gears used to
connect two
parallel shafts with their field of
applications?
(b)
Agear drive consists of two
gears, Aand B, and
has a velocity ratio of 1.50. Gear A, the
smaller
of the two gears, revolves at 126
rpm in the
clockwise direction, and has 28 teeth. If the
gears have a module of 2 mm, determine:
(i)
The number of teeth on Gear B.
(ii)
The pitch (reference) diameters for
the two gears.
The circular pitch
The speed of gear B
(iiü)
(iv)
5.
6.
Marks: 50
Clutch is the prime component used for gear shifting. In
aview, explain the single plate clutch with
attachment
of gear transmission system?
(a) What is Gyroscopic couple? Discuss
Gyroscopic
(b)
5+5
CO 3, BT 1
5
CO 3, BT 3
5+5
CO 3, BT 1
5
CO 3, BT 3
effect on ship.
A gyroscope spins with its tip on the ground and
isspinning with negligible frictional resistance.
The disk of the gyroscope has mass 0.3 kg and
is spinning at 20 rev/s. Its center of mass is 5.0
cm from the pivot and the radius of the disk is
5.0 cm. What is the precessional period of the
gyroscope?
7,
Cam and follower mechanism is called exxact function
generating mechanism. Explain in the context of
kinematic pairs? Explain the following terms as well
(a) Pressure angle
(b)
Base circle
(c)
(d)
Cam profile
Prime circle
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY,BHOPAL
End-Term Exam (April 24, 2023)
Course: B. Tech.
Branch: EE/MME/CHEM/ME
Semester: IV
Subject: Mathematics-IV
Subject Code: MTH 241
Max. Marks: 50
Max Time: 180 Minutes
Note: Attempt all the questions. Usual notations are used.
T(a) Define Linear programming problem (LPP) and solve the following LPP by
using
method:
Big-M
Max. Z =X +2x, +3x, - x4
Subject to the constraints
x+2x, +3x, =15,
2x, +x, +Sx, =20,
x+ 2x, +x, +x, =10,
)Explain duality in LPP. Apply the principle of duality to solve the following LPP:
Max. Z=3x, -2x,
5
Subject to the constraints:
xS4,
and
1sx, s6,
(2(a)|Solve the following LPP by the revised simplex method:
Min. Z=x+ 2x,
Subject to the constraints:
X+x, >2,
and
4,, 20.
2x +5x, 26,
2(6) Discuss the difference between the basic feasible solution (BFS) and feasible solution. Also, 5
determine an initial feasible solution to the following transportation problem using the
()north west corner rule (ii) least cost entry method
Destination
D,
D; D, D, Availability
6
Origins Oz
4
Requirement
3(a)
6
4
1
14
9
2
16
3
6
2
10
15
4
10
Find the basic feasible solution of the following transportation problem using the Vogel'ss
approximation method. Also, find the optimal cost with the help of Modified Distribution
method.
Ware House
W)
W Ws
W,
Fi
21
16
25
13
Supply
11
Origins F:
17
18
14
23
13
F3
32
27
18
41
19
10
12
15
Demand
6
(3(b)
A departmental head has five subordinates, and five tasks have to be performed. 5
Subordinates differ in efficiency and task differs in their intrinsic difficulty. Time each man
would take to perform each task is given in the effectiveness matrix below. How should the
tasks be allocated, one to a man so as to minimize the total man hours?
Subordinates
=
Tasks
22
A
16
12
B
18
18
23
17
26
18
15
13
12
18
20
18
19
2
24
19
19
13
4(a)|Find the optimum integral solution to the following Integer programming problem (IPP) by
Gomory technique:
Max. Z =x,+2x,
Subject to the constraints:
6x, +5x, s 25,
x+3x, s10
and
XËX are non-negative integers.
4(b) Explain IPP. Using Branch and Bound technique solve the following IPP
Max. Z =2x, +3x,
Subject to the constraints:
Xtx, 4,
2x, s11
2x, s7
x,x, 20 and x,x,are integers.
and
5(a)
What do you understand by zero-sum and non-zero sum games? Explain saddle point.
Determine the optimal strategies and the values of the following 3x3game whose payoff
matrix is given below:
Player B
III
3
-3
Player A
-3
3
II
|3
-3
S(b) Explain the rules of network construction. Tasks A, B, C, D, E, F, G, H, I constitute a
project. The precçdence relationsjps are as follows
AD, A< E: BF: DF;C<G; C<H; F<I;G<I.
Construct the network to represent the project and find the minimum time of completion of
the project when time, in days, of each task is as follows:
Task: A
B
Time: 8
10
C
D
10
16
17
G
H
18
18
Also,identify the critical path of the given network and explain what does acritical path
actually signify?
3
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY, Bhopal
DEPARTMENT OF MECHANICAL ENGG
EXAMINATION:- END Term Examination
Name of Program:
Name of Subject:
Max Marks:
B.Tech (ME)
Machine Design- 1
50
Instruction to the students
MONTH & YEAR:- 28th April 2023
Semester:
4
Subject Code: ME 221
Duration:
180 Min
Answer should be brief and to the
point.
Start a new question from a
new
page.
Make the assumption if
required, but state them cdearly.
e.
Question
a) Explain Goodman failure
1.
criteria for a
subjected to a variable
load. Also specify line of failure and linespring
of
design in it along with the
relation for "Factor of safety".
b) Discuss in detail "Basic
CO
BT
(6]
CO-3
2
design procedure" of design.
a) It is required to Design a knuckle joint to
connect
circular rods
subjected to an axial tensile force of 110 kN. Where two
allowable tensile
strength is 120 MPa,compressive strength 150 MPa, Share
strength 55
MPa.
2.
Marks
b) Drive the design procedure for an eccentric load
perpendicular to axis
of bolt shown in figure No.1.
CO-2
[6]
(4)
CO-1
5
and
CO-4
CO-1
and
CO-3
6
Figure No. 1
A rigid bracket shown in Figure No. 2, is used to support an
engineering structure via riveted fastener. The vertical load of 15 kN [10]
3.
is subjected statically on the bracket The bracket is fasten to the
support structure by 6 identical rivets. The permissible tensile and
CO-1
and
CO-4
shear stress of rivet material is 60 MPa and 40 MPa. Find the
appropriate diameter of rivet according to maximum loading on the
following basis.
(i)
(ii)
Maximum Shear stress theory
Maximum Principle stress theory
End Term Examination, April 2023: 1V Sem, Mech, ME221.
Page 1 of 3
6
a) A line shaft supported by twobearing A and Bon
which two
dre mounted i.e.Cand D. shown in Figure No.3. The pulieys
power is
Supplied by the vertical belt on the pulley C which is then
transmitted to the pulley D carrvine ahorizontal belt. The maximum
tension in the belt is 2.25 kN. The anole of contact for both
pulleys is
180° and coefficient of friction is 0.24.
The
allowable
stress are b5 MTa
in tension and 42 MPa in
shear, Find the
solid
4.
shaft on the basis of
(i)
bending moment.
(ii) Equivalent
Equivalent
b) Design
a)
(6]
appropriate diameter or
torsional moment.
procedure of muff coupling with neat sketch.
Design a
helical
for a pneumatic hammer, which
spring
1S Working under a load
range
from
tor the load range is limited to 20 100 N to 350 N. The deflection
mm. The permissible shear stress in
the spring wire is
recommended as 30 %
of the ultimate tensile
compression
(6]
CO-4
5
CO
5
1
CO-2
and
CO-4
strength. Design the
the factor of safety spring for static consideration and determine
stresses.
"Standardreference -against
table No.fluctuating
1"
5
CO-1
CO-3
and
b) A power screw
is used to
arrangement
wing to bear a
maximum axial force
of 15 kN through theaircraft
flap,
during the take of
is
thread
50mm
and 8 mm is
pitch. The lead of screw is 24 mm. The
setup is fitted with collar
arrangement with coefficient of friction is 0.15. The outer and inner
diameter of collar is 100 mm and 65 mm
Find the minimum coefficient of friction respectively.
of thread screw for
self-lock,
while collar friction participate in
self-locking.
Consider the situation when total torg1ue
is to be zero.
aircraft. The major diameter of square
CO-1
and
(4)
CO-2
ALL THE BEST.
End Term Examination, April 2023:1V Sem, Mech, ME221.
Page 2 of 3
300
200
200
|
200
FigreNo
2.
-++
300
P=15 kN
600
C!
D
400
D
B
A
-
200
300
T
1000
Figure No. 3
Table No. 1
Exponent (m)
Constant (A)
Grade-1
0.251
1630
Grade-2
0.191
1720
Grade-3
0.179
1980
Grade-4
0.145
2160
2
Oil tempered unalloyed steel
0.186
1880
3
OilHardened alloyed steel
Stainless steel
0.167
2000
0.112
2000
S.No
1
4
Material
Patented Cold
Drawn steel
End Terrn Examination,April 2023: IV Sem,Mech, ME221.
Page 3 of 3
Name:
MAULANA AZAD NATIONAL INSTITUTEOFScholar No.
TECHNOLOGY BHOPAL
Department of Mechanical Engineering
Fundamentalsof Design (ME 252)
End Term
Examination, April 2023
questions
carefully.
questions are compulsory.
There are 3
Read all the
All
1.
Time: 180 mins
printed pages.
are written in small
Answer question number5 Marks
().
brackets
in
Detach page no. 3from the the space provided on page number 3 of the question
question paper and attach it in your
paper.
to write your
name and scholar
answer
book.
Don'
t
forget
number on the top of the page no, 3.
Complete each of the following
Each blank carries 1 mark. statements. Write only answers in your
answer b00K.
(10)
(a) In the
double diamond approach of
is togenerate
design thinking,
(divergencefconvergence)
(b) In short term multiple problems/solutions.
[CO1, BT 2]
memory,information is retained
and
automatically
effort!
retrieved
(with/without)
(c)
(d)
(e)
()
Information that can be retained is
While performing a task or using a
device, distraction effect the retrieval
(small/large).
[C04, BT1]
from
term memory.
Adaptive design(short/long)
[C04, BT 2]
occurs when the design team adapts a
known solution to satisfy a
Reminder from a device should need to produce a novel application.
[CO1, BT 2]
(similar/novel/different)have both
and
(Empathy/ethnography/empathography)
investigation and documentation of the
particular conditions
(g) SCAMPER is a method to
[C04, BT 2]
is the
of
behavior of a specific group of process
people under
[CO2, BT 1]
brainstorming process.
(h) During brainstorming,
building upon others'
2.
Max. Marks: 50
(initiate/accelerate/stop) the
ideas is known as
[CO3, BT 1]
[CO3, BT 1]
Answer following questions in limited words.
(a) What is the
importance of
of
an example.
(b)
identification need in a design process? Explain by giving
Development of following devices are based on some analogy. (3)
[C02, BT 3]
analogy (direct/fantasy/personal) these devices are based. Identify on which type of
(3)
[C04,BT 3]
Vacuum cleaner
ii.
iii.
1V
V
Vi.
(c)
Pick and place robot
Artificial satellites
Aeroplanes
Bottle opener
Bike Helmet
By citing example from the videos shown
during the class, explain the importance of
taking feed back from the end users during the
design process.
(4) [CO2, BT2)
1
Name:
3.
Answer following questions in limited words.
Scholar No.
(0) In thelollowing passages, identify
whether the
or a
disagreement. Give reasons for your choice. author is presenting an argument
(4) [C03, BT 3]
Passage 1
.0mplementary therapies are an increasingly popular supplement to other forms of
these therapies argue that treatments
treatment. Those who use
such as reflexology, homeopathy and
provided by the medical profession. Indeed,
shiatsu
somepeople claim that these therapies arecomplement the care
traditionalmedicines. Anecdotal cases of mirgculous
effective than
cures abound (exist in great numbers)more
who believe such methods can
and there are those
compete on equal terms with medical
approaches. This just isn't convincing"
Passage2
"People are less politically aware now than they have
been at any time in the past. For
took great personal risks to fight for
ofyears, people
cause
that
would
benefit other people more thanhundreds
happens today. As late as the 1980s, there were
This rarely
themselves.
show solidarity with people elsewhere. Now, frequent rallies with people in one country
to
rallies are more likely to be for personal gain demonstrating
Or student grants rather thanfor
as
such
better
salaries
elections attract low turn-outs. politicalissues of wider application. Even low risk activities such as voting in
(b) In the following passages, make a
about whether the
based on sound or false premise. judgement
Give reasons for your answers.argument is likely to be
(4) [C03, BT 3]
Passage 1
"Getting wet in the rain gives you acold. The builder
worked for several hours in pouring rain.
will get colds."
Therefore, they
Passage2
"Bollywood, the Mumbai-based film industry in India, produces around 900
films every year, far more than any
rival. These are being distributed to more
countries than ever before. Indian films used to appeal mostly
to home
audiences but now attract large non-Indian audiences. India has
diversified
into
art-films
that
win
international
acclaim. Therefore, the Indian film industry is gaining worldwide appeal."
4. (a) Give any two advantages of brain writing over
brain
storming.
(2) [CO 2, BT 2]
(b) Explain any four barriers to critical thinking.
(2)[CO 3, BT 2]
(c) Differentiate between the need statement and
the problem definition with an example.
(d) Give any four differences between
problems
(e) Indicate following statements as
(2)[C01, BT2)
characteristics of conventional and wicked design
(2) [CO 1, BT 2]
true/false. Give proper reasoning for your choice
(i) Conventional designing is an iterative
process while design thinking approaches are not iterative.
(ii) Example of knowledge in the world are
signifiers, feedback, constraints and natural mappings.
They could be made easily perceivable by placing them
at random
making them available at all the time during use. (4) [C04, BT 3]places on the device and
5. Suppose you have an old bicycle and a
summer cooler at your home as shown in the figures (a) and
(b), respectively on page no. 3. Using the design
concepts
in
that you can make in each of these items so that they can taught this course, suggest 5 changes
become more user friendly. If required,
you can mark suggested changes on the pictures.
Attach the answered page no. 3 of the
question
Paper with your answer book.
(10) (CO 4,5, BT 5]
2
Knal ingl
2LL6253
Maulana Azad National Institute of Technology Bhopal 462 003
Department of Mechanical Engineering
Mid Term (March, 2023), B. Tech Fourth Semester
ME 223 Manufacturing Processes-1
Time: 90 minutes
All questions are
compulsory. Make suitable assumption wherever necessary.
Max. Marks 20
Q.1
Three castings of same material have shapes of a
and the third
casting is a cylinder with height that equal to the sphere, a cube
(h = d). Assuming
diameter
their volume relationship as Vsphere = Vcube =
Vcvlinder = 1. Find out which of
these casting willsolidify the fastest and which one
solidify the lowest?
Q.2 Briefly
the followings through suitable
differentiate
sketches
(a) Side gating and
Bottom gating.
(b)Open riser and Blind riser.
(c) Cold shut and Misrun.
(d) Directional & Progressive
Q.3 Write short answers of any solidification.
three to the
(a) During a metal casting. why doesfollowing questions:
shrinkage occur, and how can it be
[3]
COI.
BT2
[4]
(3]
COI.
BT2
COI.
CO2,
BTI
BT2
compensated for?
(b) Why should turbulent flow of molten
metal into a mold be
(c) A single point cutting tool is marked with the digits as avoided?
7,8, 6, 7, 5, 6, 0.1, what
does it signify?
(d) How oblique cutting is different than
orthogonal cutting in aturning process?
Show this difference through 2D sketch only.
(e) Determine the machining time required to tum a 0.20 m long shaft
rotating at
300 RPM at a
tool feed of 0.20 mm/rev.
Q.4
Drive the formula for chip thickness ratio in metal cutting assuming
orthogonal
cutting operation.
[5]
CO2.
BT3
[5]
CO1,
CO2.
OR
The end of apipe was orthogonally cut with a tool of 20 rake angle. The chip
length was measured as 85 mm whereas uncut chip length was 202 mm. Calculate
shear plane angle and chip thickness if depth of cut was 0.5 mm.
Q.5
Fill in the blanks with correct word(s):
(a) The cutting edges of atwist drillare known as.
(b) In making a hole the depth of cut is 40 mm, the diameter of twist drill would
be.
(c)The twist drill having the point angle.
..is used for general purpose hole
making in metal plates.
(d)
are the spiral grooves which run to the length of the drilI.
(e) The process used to enlarge the end of an existing hole to accommodate the
round head of a screw is known as
1
BTI
BT2
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY, BHOPAL
Department of Mechanical Engineering
MINITEST (09-02-2023)
IV Sem. B.Tech.
(Mech)
Sub. Code: ME 224
Subject Name: Industrial Engineering and Operations Research
Time : 60 Minutes (11 AM -
12.00 Noon)
Max. Marks: 10
Attempt all the questions
Q.1
Q.2
Ambika Chemicals Limited must produce cxactly
1200 kg of 04 COZ
mixture of chemical A and B to be
to a customer.
delivered
Chemical A and B cost Rs 60 and Rs 80 per kg. It is
stipulated that
no more than 400 kg of chemical A
and no less than 400 kg of
B
chemical must be used in preparing this mixture.
Formulate and
solve this LPP using Simplex method. Also
determine the minimum
cost involved.
A Hotel Manager wishes to find out the best way to
toast three slices 03 CO2
of bread. He has an old-fashioned hand
operated electric toaster. It
can toast one
side of two pieces of bread at the same time, but it
takes two hands to insert or remove each slide of
bread. To turn a
slice of bread to toast the other side, the operator has
to push the
toaster door down and permit a spring to shut it back; this
operation requires only one hand. Therefore, two pieces of bread can
be
turned at the same time.
The following are the elemental times needed to perform
operations:
Toasting (one side) -0.50 Minutes
-0.02 Minutes
Turning of toast
Toasting (other side) -0.50 Minutes
Insertion Time
-0.05 Minutes
Removing Time
0.05 Minutes
the
0.05770.n
2
Assume that both hands can perform their tasks with the same
degree of efficiency, draw an activity chart for toasting three slices of
bread, what method would you recommend to obtain the best
equipment utilization that is, the very shortest over-all time?
Q.3
From amongst the various recording techniques, suggest the one 03 CO1
that is most relevant to construction projects where, more than one
resources are employed and the management seeks the best
operational procedure so as to optimize the utilization of resources
in turn leads to most productive environment. You are expected to
make use of a appropriate example.
MAULANA AZAD NATIONAL INSTITUTE
OF TECHNOLOGY BHOPAL
ENGINEERING
DEPARTMENT OF MECHANICAL
MID TERM EXAM (MAR-2023)
Engineering)
B. Tech IVSemester (Mechanical
222)
(ME
Machines
Mechanisms of
Marks: 20
Time: 1.5 Hours
Instructions:
1. All questions are compulsory and carry equal marks.
2. DraW neat diagrams and mention suitable assumptions wherever
Q.
Question
Marks Corresponding
CO (s)& BT
(s)
No.
1.
What is degree of freedom of a mechanism; explain
with examples considering Grublers criterion?
2.
Sketch and explain Whitworth quick return mechanism
necessary.
5
CO 2, BT 1
CO 2, BT 3
with suitable diagram. Write the applications as well?
3.
Define transmission angle? Also, derive the maximum
5
CO 1, BT 1
and minimum value with respect to crank angle?
4.
explain constrained,
unconstrained and successfully constrained motion
What
are
kinematic
with suitable examples?
links;
CO 2, BT 1
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY, Bhopal
DEPARTMENT OF MECHANICAL ENGG
EXAMINATION:-MID Test
MONTH
Course: B.Tech
Subject Name: Machine Design 1
Semester IV
YEAR: 17th March 2023
Branch. MECHANICAL 1, 2 &3
Subject Code: ME 221
Time: 90 Minutes
Max. Marks 20
NOTE: Assume anysuitable data and make a
note.
S.No
Question
CO's
a) Classify
fasteners in detail.
b) What areNon-Permanent
the basic design procedure of
1
OR
design?
a) As a designer, what assumption should
consider while design
a machine element/component?
b) What are the basic
requirements while design a machine
CO-1
CO-2
Marks
a) 2
b) - 2
element/ component?
Design procedure of a pin type knuckle joint.
OR
Design a cotter joint for a cyclic load varying from 30 kN to 30 kN.
2.
Carbon steel is used for all components of joint for which the
following permissible stresses may be used.
Tensile stress = compressive stress = 60 MPa, shear stress = 45
MPa and crushing stress = 100 MPa.
CO-2,
CO-4
and
CO-1
Note: Consider the load is static, while design the joint.
A beam is attached to a vertical column by means of twelve
identical bolts as shown in Figure No 1. The maximum permissible
shear stress for the threaded fasteners is 65 MPa.. Find
i
Which threaded fasteners is subjected to maximum force
and their magnitude?
Magnitude of forceon each threaded joint.
ii.
Minimum area required for threaded fasteners of given
arrangement.
Note: Design the fasteners considering eccerntric load condition on
threaded arrangement for single side of column. Also, point load of
UDL is also equally shared.
CO-3,
3.
70
250
250
- 70 -
CO-2
and
CO-1
UDL- 400 N/mm
200
75
4
-!
100
figure no. 1
ALL THE BEST.
75
20
8
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY BHOPAL
Department of Mechanical Engineering
Mid Term Examination (March 2023)
B.Tech. IV Sem
Fundamentais of Design (ME 252)
Max Marks: 20
Max. Time: 90 mins
Note: Attempt all questions.
All questions carry cqual marks.
Support answers with suitable examples.
Keep your answers short and to the point.
1,
After your graduation, suppose you have been placed in a design (5) |CO 1]
consultancy firm. Being a part of design team you have been assigned to
design a "PRODUCT". Illustrate n step by step manner. how you will
proceed with the designing process. You can choose your PRODUCT as
anv one of the following items.
a.
Gear box for an automobile
d.
Distillation unit
b.
A furnace
e.
Pick and place robot
C.
A reinforced beam
f.
A route tinding mobile
application
2.
Describe any two personality attritbutes of the members of a design team
(5) |CO 1]|
that make the team efficient.
3.
Illustrate any two tools for empathizing with the user.
(5) |CO 2]
4
What is a wicked problem example? Explain its wicked features.
(5) |CO 1|
OR
By taking an example of any item'equipmentinstrument, diflerentiate
between the "Knowledge in the head" and "Know ledge in the world".
2!t6953
Maulana Azad National Institute of Technology Bhopal -462 003
Department of Mechanical Engineering
End Term (April, 2023), B. Tech Fourth Semester
ME 223 Manufacturing Processes-1
Time:3 hour
Allquestions are compulsory. Make
suitable assumption wherever necessary.
CO: Course Outcomes,
BT: Bloom Taxonomy
Q.1 (a) Define metal casting,
metal forming and
Max. Marks 50
welding process.
[2] Co1,C03,C04
(b) Classify the positive and negative
allowances usually given in a pattern, (2
and discuss any one.
(c) Using the Bernaulli's theorem for
the flow of liquid
gatting system and into the mold, Derive the following metal through the (3]
equation
V=/2gh
where v is the velocity of the liquid metal at the base of the
open sprue, 8
is the gravitational constant and h is the
length of the sprue.
(d) Amold sprue is 20 cm long, the cross-sectional area at its
base is 2.5 cm'. (3)
The sprue feeds a horizontal runner leading into a mold cavity
whose
volume is 1560 cm². Determine: (a) velocity of the molten metal at the
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CO1
BT3
CO1
BT4
base of the sprue, (b) volume rate of flow, and (c) time to fllthe mold.
Q.2 (a) Draw neat sketch of a single point cutting tool using three views. And, 3]
also discuss tool signatures with an example.
(b) Differentiate orthogonal machining and oblique machining processes with (2]
the help ofa sketch.
(c)
A
cylindrical rodof 50 mm diameter is reduced to 42 mm by a cutting tool
30
28
265
$20.6
lathe machine.
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[2]
C02
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[3]
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while cutting orthogonally. If the mean length of the cut chip is 45 mm,
find the cutting ratio. Ifthe rake angle is 15", what is the shear angle?
(d) The figure shows the part drawing of turming exercise
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16x2
921.6|.
26.8
6
89
Alldimension are in mm
() List out the operations and sequences need to carry for completing the
job.
() Use the necessary data from the figure to find out the taper angle.
P.T.0
1
Q.3 (a) Define fusion and non-fusion welding processes and classify them.
(3]
(b) Explain the working principle of resistance welding process with the help B|
of neat sketch.
(C) Two steel plates of | mm thick are jointed by projection welding with (4|
current of 30000 Afor 0,005 second. the effective resistance of joint may
be taken as 100micro ohms. Consider ioint as cvlinder (diameter =5 mm.
height = 1.5 mm), density of stecl as 0.00786 gm/mm' and heat required
tor melting steel be 0 joule/mm. Find percentage of heat loss?
Q.4 (a) Classify and discuss metal
forming processes.
(b) Explain various types of rolling mills with the help of neat sketches.
Write short noteson:
(i)
Compaction and sintering in powder metallurgy.
()
Additive manufacturing and its applications.
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CO
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CO3
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C04
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C04
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COS
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Scholar No. 2ilG253
Name
kuual Singl.
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY, BHOPAL
DEPARTMENT OF MECHANICAL ENGINEERING
End-Term Examination - April-May, 2023
IVSemester B. Tech. (Mechanical
Engineering)
Date of Examination - 3d May,
2023
Subject Name: Industrial Engineering and Operations
Time : 180 Minutes
NOTE: Answer all
Research (ME 224)
Max. Marks: 50
questions.
SNo
1,
2.
You, as Shop Floor Manager, are Questions
asked to
work study project in order to
enhance productivity of the shop floor. Howattempt
would you prioritize the jobs to select
for work study?
A Garment
Industry making shirts
have following activities
Sewing, Dress
Designing, fusion process (collar/coughs),
Cloth
cutting,
Packaging,
Buttonhole
making & Button fixing, Acccssorics fixing, Ironing.
Suggest appropriate recording
technique of
Marks
05
CO
CO1
10
CO3
05
CO1
10
CO2
05
CO2
10
CO3
02
03
CO1
CO1
method study to record the movement of material
through the
conversion as finished product. Assume suitable
data to
prepare the data sheet in
its prescribed format.
3
4
Enumerate the principles of
and also discuss the various motion economy as related to the use of human body
of hand motion.
Solve following Transportationclassification
problem. Use VAM for initial feasible solution:
To Market
M
P
From
Plant
P
P
P
Demand
5.
M2
6
20
6
7
1
Ma
M4
4
7
1
12
1
3
14
6
90
30
50
30
11
Supply
40
40
50
90
Acompany has a demand of 12000
such iterms per
units/year of an item and it can produce 2000
month. The cost of one setup is Rs 400 and the holding
cost/unit/month is Rs 0.15. Find the optimum lot size and the total cost per year,
assuming the cost of 1 unit as Rs 4. Also find the maximum_ inventory,
manufacturing time and total time.
6.
A company has one surplus truck in each of the cities A, B, C, D
and E and one
deficit truck in each of the cities 1, 2, 3, 4, 5, and 6. The distance between the
cities in kilometers is shown in the matrix below. Find the assignment of
trucks
from cities in surplus to the cities in deficit so that the total distance covered
by
vehicle in minimum.
2
B
12
10
15
22
18
8
10
18
25
15
16
12
6
14
10
13
13
12
8
12
11
7
13
10
3
D
7.
9
Define Simulationwith one Engineering application.
You are solving a Linear Programming Problem using Simplex method. How would
you ascertain that whether it has a unique optimum solution or has multiple
optimum solution.
MAULANA AZAD NATIONAL INSTITUTE OF TECHNOLOGY, BHOPAL
Department of Mechanical Engineering
MINITEST (09-02-2023)
IVSem. B.Tech. (Mech)
Sub. Code: ME 224
Subject Name: Industrial Engineering and Operations Research
Time : 60 Minutes (11 AM - 12.00
Noon)
Max. Marks: 10
Attempt all the questions
Q.1
Q.2
Ambika Chemicals Limited must produce exactly 1200 kg of 04 CO2
mixture of chemical A and B to be delivered to a
customer.
Chemical A and B cost Rs 60 and-Rs 80 per kg, It is stipulated
that
no more than 400 kg of chemical A and no less than
400
kg
of
chemical must be used in preparing this mixture. Formulate and
solve this LPP using Simplex method. Also determine the minimum
cost involved.
A Hotel Manager wishes to find out the best way to
toast three slices 03 CO2
of bread. He has an old-fashioned hand
operated electric toaster. It
can toast one side of two pieces of bread at the samnetim, but it
takes two hands to insert or remove each slide of bread. To turn a
slice of bread to toast the other side, the operator has to
push the
toaster door down and permit a spring to shut it back; this
operation requires only one hand. Therefore, two pieces of bread can
be turned at the samne time.
The following are the elemental times needed to perform the
operations:
Toasting (one side) -0.50 Minutes
Turning of toast
-0.02 Minutes
Toasting (other side) -0.50 Minutes
Insertion Time
Removing Time
-0.05 Minutes
0.05 Minutes
Assume that both hands can perform their tasks with the same
degree of efficiency, draw an activity chart for toasting three slices of
Q.3
bread, what method would you recommend to obtain the best
equipment utilization that is, the very shortest over-all time?
From amongst the various recording techniques, suggest the one 03 CO1
that is most relevant to construction projects where, more than one
resources are employed and the management seeks the best
operational procedure so as to optimize the utilization of resources
in turn leads to most productive environment. You are expected to
make use of a appropriate example.
MAULANA AZAD NATIONAL, INSTITUTE OF TECHNOLOGY, BHOPAL
Mid-Term ExAm (13 March 2023)
Course: D. Toeh,
Semester: IV
Nax, Mrka: 10
Note: Attompt all tho
questlons, Usunl
Branch: EEMMEICHEM/ME
Subject Code: MTH-241
Aub<eet: Mathemattea-1V
|(a)
MAs, Timo: 90 Minutes
notntions Are UsOd
'olowing1ystem ot equatiohs
*+2y +a n4,
2.r++5t 5.
Identity whether basic solutions are basic feasible
or not? Moreover, check tor
degenerate basic feasible solution.
Olbiain all baNle Nolutisnn or the
A firm uses lathes, milling
and grinding machincs to
two
machine parts. The followingmachines
table represents the machining times produce
required tor
cach part, the machining times available on
different machines and profit on
each machinc part.
Typeof machine
Machintng time required for
the machine part (minutus)
Lathes
Milling maehines
Grinding
maclilhes
Maximum time
available per
week (tinutes)
3000
10
2000
2
900
Pornulate che PP ahd find th¿ humber of parts I 4nd Ì tÏ be
manufaeturcd per
Use wa plhase simplex method Iý solve the following LPP
SuBjset to the constrainta:
2x, +x, 24,
3.
x +7x, 27
änd x.x, 20.
Use dual simplex mcthod to solve the following LP problem:
Minimize Z=6x, +7x, +3x, +5x,
Subject to the constraints:
5x +6x, -3x, +4x, 2 12, x, +5x, -6x, 10, 2x, +Sx, tx, +x, 28
and x,x,, *,x, E0.
Solve the following LP problem
Maximlse } 4.4 +6t, +2x,
Bubjest 16 thÇ eonstralnta:
Al%0, disëiss the eiteci af dhanglhg the tequiterfient voctür forrin
3
9
6
MAULANAAZAD NATIONAL INSTITUTE OF TECHNOLOGY BHOPAL
Department of Mechanical Engineering
MIDTERM (16th March, 2023)
Branch &s Year: IV Sem, B Tech (Mechanical Engineering)
Subject: ME-224 (Industrial Engineering and Operations Research)
Maximum Marks: 20
Time allowed: 90 Minutes
NOTE: Attempt all the qucstions.
S No
Q. 1
Question
Marks
A Company has four job orders. This company operates on
and has three project teams available. Each team must be project basis
assigned only
one job order. The following table provides estimates of man-days of
7
developnent and engineering time required.
Development time (man-days)
Engineering Time (man-days)
B
2
3
6
5
3
A
9
7
5
2
1
3
2
5
3
6
C
3
5
4
7
10
6
Development Expense - Rs 120 per man-day
Engineering Expense - Rs 100 per man-day
Returns for thecompany: Job A- Rs 2000
Job B - Rs 1800
Job D - Rs 1900
Job C- Rs 2100.
(A) Which team should be assigned to which job to maximize profit?
(B) If team 3 can't be assigned to job A, w1ll there be a change in
maximum profit?
Q.2
A management consulting firm has a backlog of 4 contracts. Work on
7
these contracts must be started immediately. 3 project leaders are
available for assignment to the contracts. Because of varying work
experience of the project leaders, the profit of the consulting firm would
vary based on the assignments as shown below. The unassigned contract
can be completed by subcontracting it toan outside consultant. The profit
from the subcontract is zero. Determine the assignment of project leaders
to the contracts so as to maximise profits.
Contracts
A
Project LeadersB
C
Q.3
13
2
10
15
17
6
4
11
13
11
20
(i) Illustrate the assumptions of Linear Programming Problerns.
(ii) Demonstrate that Transportation is a special case of LPP.
(iii) How degeneracy, in a LPP, is identified during Simplex Method.
2
2
2