Font size
S
M
L
XL
WorksheetsPRE GTU 1. PRODUCTION TECHNOLOGY
Total questions: 83
Worksheet time: 1hrs 27mins
Name
Class
Date
1.
In orthogonal cutting chips are in form of…………..
a)
Long curl
b)
Flat spiral
c)
Discontinuous
d)
Short & thick
2.
What is the optimum value of rake angle in degrees for maximum tool life?
a)
10
b)
12
c)
15
d)
20
3.
Tool signature, how many angles consists of……….elements
a)
5
b)
4
c)
6
d)
7
4.
Which of the following is correct about chip thickness ratio ‘r’?
a)
t2>t1
b)
t2=t1
c)
t2<t1
d)
t2+t1
5.
Which of the following is correct value about chip thickness ratio ‘r’?
a)
1
b)
less than 1
c)
greater than 1
d)
more than 1
6.
The tool made of CBN (Cubic Boron Nitride) wear out faster at
a)
Slow speeds
b)
Medium speeds
c)
Fast speeds
d)
Very fast speeds
7.
why nose radius is provided ? tell me better ans.
a)
It improves tool life
b)
It improves the surface finish
c)
avoid catastrophic failure of tool tip
d)
chip formation
8.
What is the purpose of dynamometer?
a)
measuring force, moment of force (torque), or power
b)
moment of acceleration
c)
moment of tool
d)
All of the above
9.
Tool life is said to be over if.......
a)
A poor surface finish is obtained
b)
Sudden increase in power and cutting force with chattering take place
c)
Overheating and funning due to friction start
d)
All of the above
10.
Cutting power consumption in turning can be significantly reduced by
a)
Increasing rake angle of the tool
b)
Increasing cutting angle of the tool
c)
Widening the nose radius of the tool
d)
Increasing the clearance angle
11.
which force can be measured by tool dynamometer ?
a)
Shear force Fs
b)
Normal to shear force Fn
c)
Normal to frictional force F
d)
Tangential component of force Fc + Axial component of force Ft
12.
which statement is wrong for Merchant circle diagram representation.
a)
The shear plane is always acting upwards.
b)
Shear strength of Metal along shear plane is affected by Normal stress.
c)
The Depth of cut is constant.
d)
Continuous chip without BUE.
13.
which statement is right for orthogonal cutting operation .
a)
chip thickness = feed rate
b)
chip width = feed rate
c)
chip width = chip thickness
d)
feed rate = cutting speed
14.
Due to hot chip formation on tool face which wear is generated in single point cutting tool ?
a)
Edge wear
b)
Crater wear
c)
Flank wear
d)
corner wear
15.
Due to reduced clearance which wear is generated in single point cutting tool ?
a)
Edge wear
b)
Crater wear
c)
Flank wear
d)
corner wear
16.
Tool life in oblique cutting is
a)
more than the tool life in orthogonal cutting
b)
less than the tool life in orthogonal cutting
c)
equal to the tool life in orthogonal cutting
d)
cannot say
17.
Defined as the angle between the portion of the end flank immediately below the cutting edge and a line perpendicular to the base of the tool, measured at right angles to the flank
a)
End relief angle
b)
side relief angle
c)
End cutting edge angle
d)
Side cutting edge angle
18.
For Dry cutting conditions n=0.2 and C=140 m/min of Taylor tool life equation. respectively. When a coolant was used, C increased by 20%. The increased tool life with the use of coolant at a cutting speed of 95 m/min is
a)
47.4 min
b)
37.4 min
c)
27.4 min
d)
17.27 min
19.
In ASA System, if the tool nomenclature is 8‐6‐5‐5‐10‐15‐2‐mm, then the end cutting edge angle will be
a)
8
b)
10
c)
15
d)
2
20.
Using the Taylor equation VTn = c, calculate the percentage increase in tool life when the cutting speed is reduced by 50% (n = 0∙5 and c = 400)
a)
300
b)
200
c)
100
d)
400
21.
Secondary deformation zone in metal cutting operation is located at
a)
Shear plane
b)
Tool chip interface
c)
Tool work piece interface
d)
Tool face
22.
The cutting fluid mostly used for machining cast iron is
a)
water
b)
soluble oil
c)
dry
d)
sulphurised mineral oil
23.
The use of metal working fluids
a)
increase the tool life
b)
produce better surface finish
c)
prevent rise in temperature
d)
All of the above
24.
Soluble oil is used as cutting fluid in
a)
Sawing
b)
Drilling and boring
c)
Reaming
d)
All of the above
25.
Usually no cutting oil is used in
a)
Broaching
b)
Planning and shaping
c)
Thread rolling
d)
Honing
26.
The device which place the workpiece in the same position, in jig and fixture, cycle after cycle is called as
a)
placing device
b)
fixing device
c)
locating device
d)
positioning device
27.
Drill jig bushings are generally made of
a)
copper
b)
cast iron
c)
steel
d)
mild steel
28.
The following is a quick acting clamp
a)
Hinged clamp
b)
C- clamp
c)
Bridge clamp
d)
Edge clamp
29.
Jigs and fixtures
a)
Increase repeatability of accuracy of jobs
b)
Decrease repeatability of job
c)
Does not have any effect on accuracy of job
d)
Produce job with zero tolerance
30.
Bushings
a)
Locate to job
b)
Guide the tool
c)
Fix the job
d)
Machine the job
31.
For Cylindrical surface locating, which locater use ?
a)
Flat
b)
U pin
c)
C type
d)
V- type
32.
3-2-1 used for
a)
Cylindrical surface
b)
Irregular solid bodies
c)
Rectangular bodies
d)
Spheres
33.
When supported on 2-pts. Out of 12 D.O.F. arrested in body is
a)
2
b)
4
c)
3
d)
1
34.
In 3-jaw self adjusting chuck jaws are
a)
Locators
b)
Clamping element
c)
Locators and clamping element
d)
Tool guiders
35.
what is full proofing ?
a)
6 D.O.F. arrested
b)
10 D.O.F. arrested
c)
9 D.O.F. arrested
d)
12 D.O.F. arrested
36.
The following type of jig is not used for jig bushings
a)
Template jig
b)
Plate type jig
c)
Open type jig
d)
Box type jig
37.
This type of jig is employed on multi-side machining
a)
Template jig
b)
Plate type jig
c)
Open type jig
d)
Box type jig
38.
The following type of jig is used for machining in than one plane with jig bush
a)
Template jig
b)
Plate type jig
c)
Open type jig
d)
Box type jig
39.
Fixtures are used in connection with
a)
drilling operation
b)
reaming operation
c)
tapping operation
d)
milling operation
40.
Which fixtures are used for machining parts which must have machined details evenly spaced?
a)
Profile fixtures
b)
Duplex fixtures
c)
Indexing fixtures
d)
None of the above
41.
Which fixtures are used for machining parts which must have machined complex shape job work?
a)
Profile fixtures
b)
Angle fixtures
c)
Indexing fixtures
d)
None of the above
42.
The underlying principle behind a hydraulic press is based on ______ principle
a)
Bramah’s
b)
Pascal’s
c)
Stoke’s
d)
Newton’s
43.
Which not the following is a type of die?
a)
Cutting dies
b)
Progressive dies
c)
Compound die
d)
Trunning die
44.
Moving a small straight punch up and down rapidly into a die is done by a process known as?
a)
Perforating
b)
Parting
c)
Nibbling
d)
Lancing
45.
In drawing operation, increase of punch radius....
a)
Has much influnce on punch load and it decreases
b)
Does not influnce the punch load much
c)
Punch load increases
d)
Punch load depends on other factors
46.
In bending operation, the metal takes shape of........
a)
Die
b)
Punch
c)
Average of two
d)
Could take any shape
47.
As the clearance increases, the punch force required?
a)
Decreases
b)
Increases
c)
Remains same
d)
First increases and then decreases
48.
Shearing the sheet into two or more pieces is known as?
a)
Perforating
b)
Parting
c)
Notching
d)
Lancing
49.
Punching a number of holes in a sheet is known as?
a)
Perforating
b)
Parting
c)
Notching
d)
Lancing
50.
Punching a number of Circular holes in a sheet is known as?
a)
Perforating
b)
Parting
c)
Punching
d)
Lancing
51.
Gear shaping is related to.......
a)
Template
b)
Form tooth process
c)
Hob
d)
Generating
52.
Which of the following methods produces gear by generating process......
a)
Hobbing
b)
Casting
c)
Punching
d)
Milling
53.
Gears are best mass produced by.........
a)
Hobbing
b)
Casting
c)
Punching
d)
Milling
54.
Which of the following is a gear finishing operation......
a)
Milling
b)
Hobbing
c)
Shaping
d)
Shaping and Burnishing
55.
Hobbing process is also used for which of the following application?
a)
Punching
b)
Metal bending
c)
Rust removal
d)
Sprocket cutting
56.
Hobbing is a special type of which of the following?
a)
Milling
b)
Hobbing
c)
Shaping
d)
Shaping and Burnishing
57.
Tap is used for
a)
Making internal threads
b)
Making external threads
c)
Making hole
d)
All of the above
58.
Gear forming operation can be performed by
a)
Shaping
b)
Milling
c)
Broaching
d)
All of the above
59.
Which of the following is gear finishing process
a)
Milling
b)
Hobbing
c)
Shaping
d)
Shaving
60.
As the number of threads on the hob increases, it’s accuracy_____
a)
Increases
b)
Decreases
c)
Remains same
d)
Cant say
61.
____ is used to measure the effective diameter of screw threads.
a)
Screw pitch gauge
b)
Screw thread plug gauge
c)
Screw thread caliper gauge
d)
Screw thread micrometer
62.
Which of the following is true about AJMM
a)
It is a low cost method
b)
It is toxic towards the environment
c)
It is hazardous to human health
d)
It is not capable of anisotropic machining
63.
In EDM dielecetric fluid is
a)
Conducting
b)
Non conducting
c)
Insulator
d)
none of the above
64.
Which type of abrasive is used for fine fininshing?
a)
Aluminium oxide
b)
Silica
c)
Boron Carbide
d)
none of the above
65.
Which type of machining produces large amount of heat?
a)
USM
b)
IBM
c)
LBM
d)
none of the above
66.
What is common between AJM and WJM?
a)
Abrasive
b)
Water
c)
Nozzle diameter
d)
none of the above
67.
Which machining process has slowest MRR?
a)
USM
b)
IBM
c)
LBM
d)
none of the above
68.
In wire cut EDM, wire is made up of?
a)
Aluminium
b)
Copper
c)
steel
d)
Brass
69.
In USM, the highest frequency achieved is?
a)
500KHz
b)
200KHz
c)
30KHz
d)
5KHz
70.
Why in India Non conventional machining is not adapted on large scale?
a)
Costly instruments
b)
Lack of awareness
c)
Machining accuracy
d)
Lack of skilled workers
71.
In which manchining process tool replica is formed on workpiece?
a)
USM
b)
IBM
c)
LBM
d)
none of the above
72.
Which country has adapted non conventional machining at large scale?
a)
India
b)
Germany
c)
Canada
d)
Norway
73.
In the wire-cut EDM process, de-ionizing units are used for controlling the
a)
Feedrate
b)
Resistivity
c)
Burr formation
d)
Temperature of the wire
74.
Gear burnishing process for
a)
removing residual stresses from teeth roots
b)
surface finishing
c)
under-cut gears
d)
cycloidal gears
75.
Which of the following cannot be cut by hobbing process?
a)
Helical gears
b)
Bevel gears
c)
Worm gears
d)
Spur gears
76.
Internal gear cutting operation can be performed by <br />
a)
milling
b)
shaping with rack cutter<br />
c)
shaping with pinion cutter
d)
hobbing
77.
Which one of the following is not a feature of gear hobbing process? <br />
a)
High rate of production
b)
Generation of helical gears
c)
Very accurate tooth profile
d)
Generation of internal gears
78.
Which of the following methods are gear generating processes? <br />1. Gear shaping 2. Gear hobbing 3. Gear milling<br />Select the correct answer using the code given below:
a)
1, 2 and 3
b)
1 and 2 only
c)
2 and 3 only
d)
1 and 3 only
79.
Electric discharge machining is more efficient process than Electrochemical machining for<br />producing large non-circular holes.
a)
true
b)
false
c)
cant say
d)
insufficient data
80.
A machining process for creating teeth on a gear using a cutter is known as
a)
Gear shaving process
b)
Gear burnishing process
c)
Gear hobbing process
d)
Gear Lapping Process
81.
Write your full name in the format 1. First Name 2. Middle name 3. Last name
4 lines
82.
Write your enrollment number.
4 lines
83.
Write your batch.
4 lines
Reset
