Important Practice Question Available for Exam. This Questions are based on Repeated Topics and Frequently Ones with the Help of this you can Score Good Marks in Exam and you will Pass in Exam.
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1. Attempt any FIVE of the
following: 10
a) Enlist any four process
parameters in EDM.
b) State the equation of cutting
speed for milling operation.
c) List the various gear finishing
methods.*
d) Name the basic components of an
CNC machine.*
e) Write only classification of
CNC machine.*
f) Write meaning of following G
and M-codes.*
(i)
G02
(ii)
M30
g) State any two examples of fixed
automation.*
2. Attempt any THREE of the
following: 12
a) Explain the purpose of
electrolyte in ECM.
b) Compare between vertical and
horizontal milling machine.
c) Describe automatic of f ‘Tool
Offset’ / tool changer (ATC) of CNC machine.*
d) Justify need off cutter radius
/ tool length compensation of CNC machine. *
e) Compare between up milling and
down milling process
f) Explain the functions of the
dielectric fluid used in EDM.
3. Attempt any THREE of the
following: 12
a) Differentiate between gear
hobbing and gear honing.*
b) Compare “Point to Point” and continuous
path CNC machine.
c) Explain the meaning of
following block format of CNC.
N020 G03
X12 Y14 Z-0.5
I0 J12 F90
E0B
d) Describe fixed and programmable
automation.
e) Distinguish between gear
shaping by pinion cutter and gear shaping by rack cutter.
f) Compare lead screw of
conventional machine and re-circulating ball screw of CNC machine.
g) Differentiate between canned
cycle and subroutine function for CNC machine.
h) Draw the diagram of simple
robot and show different components of it.
4. Attempt any THREE of the
following: 12
a) Classify the different methods
of gear manufacturing. *
b) Apply right hand rule of axes
identification to CNC vertical milling with neat diagram.*
c) Calculate the cutting
parameters and prepare process sheet for the component shown in Fig. No.1. with
neat diagram. All dimensions are in mm. *
Given: Raw material - Aluminium,
stock size φ14 X42 length, feed (f) = 0.2 mm/rev, cutting speed (V) = 90 m/min.
Consider work zero (W) as per the Fig. No.1.
d) Develop full G and M code
manual part program of CNC lathe for component shown in Fig. No.1. using word
address format (WAF). *
e) Justify the need & use of FMS
/ Group Technology in today’s manufacturing situation. *
f) Differentiate between automatic tool changer
(ATC) and automatic pallet changer (APC) of CNC machine
5. Attempt any TWO of the
following: 12
a) Draw set-up diagram of ECM /
EDM processes showing all the elements. State the function of each elements. *
b) Draw internal mechanism of
universal dividing head and label the parts.
c) Explain need of virtual CNC
machine simulators. *
d) Calculate cutter RPM to cut ‘T’
slot when cutting speed (V) = 90 m/min. Diameter of cutter Ø =10 mm. and show
work and cutter arrangement diagram for above operation.
e) Apply right hand rule of axes
identification for CNC lathe and CNC milling machine.
6. Attempt any TWO of the
following: 12
a) Draw set-up diagram of wire cut
EDM and label the parts, also suggest approximate range of following process parameters
with it’s measuring unit. *
(i)
Discharge current OR Pulse frequency.
(ii)
Wire speed OR Wire tension.
b) Apply compound indexing method
to divide 51 / 69 divisions on circular blank. *
c) Use the different milling
cutter to cut ‘T’ slot on rectangular block with neat diagram, also mention the
sequence of operations and types of milling cutter used.
d) Draw experimental set up of
gear manufacturing by horizontal milling machine and show various elements on
it with its function.
e) Draw set up diagram and
demonstrates the range of following process control parameters of abrasive jet
machining process.
i)
Grain types and size.
ii)
Gastype and pressure.
iii)
Nozzle material and hardness.
NOTE: This is Not Official MSBTE Website: We Provide Important Practice Questions for Students to Score Good Marks in Exam and this Questions is based on Important Topics of Syllabus and Repeated Ones. So, with the help of this we help student to Not get KT / or / They will Not get Fail in Exam.