WorksheetsMOOC MPT Sessional-1
Total questions: 50
Worksheet time: 50mins
Name
Class
Date
1.
Why metal removal process is costly?
a)
a) more energy is required
b)
b) some of the material is wasted
c)
c) both more energy is required and some of the material is wasted
d)
d) none of the mentioned
2.
In which machining process, removed metal is negligible?
a)
a) surface finishing
b)
b) metal removal
c)
c) none of the mentioned
d)
d) both surface finishing and metal removal
3.
Which of the following process is not grouped under metal removal process?
a)
a) boring
b)
b) milling
c)
c) tumbling
d)
d) rolling
4.
Which of the following is not groped under the surface finishing process?
a)
a) sawing
b)
b) tapping
c)
c) buffing
d)
d) polishing
5.
In how many groups, metal removal process can be classified?
a)
a) 2
b)
b) 3
c)
c) 4
d)
d) 5
6.
In which type of metal removal process, grinding is included?
a)
a) conventional machining
b)
b) abrasive process
c)
c) nontraditional machining
d)
d) none of the mentioned
7.
. ______ metal removal process includes milling.
a)
a) conventional machining
b)
b) abrasive process
c)
c) nontraditional machining
d)
d) none of the mentioned
8.
In which type of metal removal process, thermal energy is included?
a)
a) conventional machining
b)
b) abrasive process
c)
c) nontraditional machining
d)
d) none of the mentioned
9.
Which of the following is the type of nontraditional machining?
a)
a) turning
b)
b) drilling
c)
c) milling
d)
d) none of the mentioned
10.
In which metal removal process, material is removed by particles?
a)
a) conventional machining
b)
b) abrasive process
c)
c) nontraditional machining
d)
d) none of the mentioned
11.
In which process, various energy forms other than sharp cutting tool is used to remove materials?
a)
a) conventional machining
b)
b) abrasive process
c)
c) nontraditional machining
d)
d) none of the mentioned
12.
Which of the following is not the type of nontraditional machining?
a)
a) electrochemical process
b)
b) chemical machining
c)
c) mechanical energy process
d)
d) none of the mentioned
13.
Which of the following is not matched correctly with respect to the manufacturing process and their condition of matter subtraction/addition?
a)
Casting à Constant material volume retained
b)
Machining à Material removal process
c)
Welding à Material addition process
d)
Forming à Material addition process
14.
Which of the following property is measured by calculating the area under the stress-strain curve?
a)
Hardness
b)
Endurance
c)
Strength
d)
Toughness
15.
The property of a material by which it can be beaten or rolled into thin sheets is called:
a)
Elasticity
b)
Ductility
c)
Malleability
d)
Plasticity
16.
Which among the following is the best characteristic that a perfectly elastic body holds?
a)
It has a perfectly smooth surface.
b)
It completely recovers its original size and shape when the deforming force is removed.
c)
It can move freely.
d)
It cannot be deformed by any external surface.
17.
True strain, ε in terms of engineering strain, e is given by:
a)
ε = ln ( 1 - e )
b)
ε = ln ( 1 +e )
c)
ε = ln ( 2+e )
d)
ε = ln ( 2 - e )
18.
The transformation of phases is best governed by ______?
a)
Pressure, temperature, and crystal structure.
b)
Pressure, temperature, and composition.
c)
Temperature, composition, and crystal structure.
d)
Pressure, composition, and crystal structure.
19.
In the equilibrium phase diagram, the _____ line is the line above which there is only liquid composition present in the system.
a)
Solidus
b)
Liquidus
c)
Transformation
d)
Melting
20.
Which of the following is not true for the eutectic point in the equilibrium phase diagram?
a)
It’s the specific composition of two metals, which has a specific (not range) freezing point.
b)
It’s the point (temperature) where liquid instantaneously converts into two solid phases.
c)
It’s also called an easy melting point.
d)
All of the above are correct.
21.
How much iron does cementite contain?
a)
0.0667
b)
0.2423
c)
0.933
d)
0.734
22.
Which of the following is not true for interstitial solid solutions?
a)
Some solvent molecules leave their regular site to help the solute atom fix within them.
b)
Solute molecules are very small.
c)
Solute occupies interstitial sites of the solvent matrix.
d)
All of the above are correct.
23.
Which of the following phenomenon is not correct with respect to the mechanism of wear?
a)
Hard particles dislodge material from the surface in contact by ploughing action.
b)
Concentration gradient-based movement of atoms.
c)
Dissimilar metals in contact break apart the surface in contact.
d)
All of the above are correct.
24.
Which of the following is the incorrect combination of alloying element and its effect on steel?
a)
Increases hardenability
b)
Increase toughness and impact strength
c)
Enhance corrosion and corrosion resistance
d)
Increase ductility
25.
Which of the following form of Fe-C composition is the hardest?
a)
Austenite
b)
Martensite
c)
Pearlite
d)
Bainite
26.
Which of the following is the most important consideration in casting?
a)
Melting temperature of job and mold material.
b)
Solubility and chemical reaction between job and mold material.
c)
Thermal properties of job and mold material.
d)
All of the above.
27.
Which of the following contraction type is observed by shrinkage allowance?
a)
Contraction of solid casting from freezing temperature to the room temperature.
b)
Contraction of liquid from pouring temperature to freezing temperature.
c)
Contraction associated with the change of phase from liquid to solid.
d)
None of these.
28.
Which of the following is not a type of pattern in casting?
a)
Cope and drag pattern.
b)
Match plate pattern.
c)
Split frame pattern.
d)
Skeleton pattern.
29.
Which of the following is not a type of gating system in casting?
a)
Vertical gating.
b)
Bottom gating.
c)
Horizontal gating.
d)
All of the above are correct.
30.
The ability of the moulding sand to withstand the heat of melt without showing any sign of softening is called as
a)
a. strength or cohesiveness
b)
b. refractiveness
c)
c. collapsibility
d)
d. adhesiveness
31.
A model of casting, constructed to use for forming a mould in damp sand, is called as
a)
a. sand construction
b)
b. pattern
c)
c. cover
d)
d. none of the above
32.
Which of the following is not a requirement of a good pattern?
a)
a. It should be light in weight to handle easily
b)
b. It should be smooth to make casting surface smooth
c)
c. It should have low strength to break it and to remove casting easily
d)
d. none of the above
33.
The patterns which are made in two or more pieces are called as
a)
a. solid patters
b)
b. split patterns
c)
c. loose piece patterns
d)
d. none of the above
34.
Permeability can be defined as the property of moulding sand
a)
a. to hold sand grains together
b)
b. to allow gases to escape easily from the mould
c)
c. to withstand the heat of melt without showing any sign of softening
d)
d. none of the above
35.
The sand in its natural or moist state is called as
a)
a. green sand
b)
b. loam sand
c)
c. dry sand
d)
d. none of the above
36.
What is the highest possible percentage of clay contents in loam sand?
a)
a. 10
b)
b. 20
c)
c. 30
d)
d. 50
37.
In which of the following type of gating, mold is filled from bottom to top?
a)
Inclined gating
b)
Vertical gating
c)
Bottom gating
d)
None of the above.
38.
Which of the following is not true with respect to the aspiration effect?
a)
It is produced when there is a sudden change in the flow direction.
b)
It is produced when pressure falls below atmospheric pressure.
c)
It is produced when gases enter the molten metal stream.
d)
All of the statements are true.
39.
Sprue design is made tapered instead of straight ___________.
a)
To have smoothness in the metal flow.
b)
To maintain the pressure balance.
c)
To avoid the erosion of mold sand.
d)
To allow easy flow of molten metal.
40.
What among the following can be the most appropriate reason for the velocity of a fluid in contact with any solid surface to be zero?
a)
No-slip condition.
b)
Cohesive forces in the fluid particles.
c)
Low velocity of the fluid.
d)
High intermolecular forces between the fluid particles.
41.
Which of the following gating designs is used to avoid the splashing of the molten metal in the mold?
a)
Vertical gating.
b)
Horizontal gating.
c)
Inclined gating.
d)
Bottom gating.
42.
Solidification plays an important role in deciding which of the following characteristics of the casting.
a)
Crystal structure.
b)
Alloy composition.
c)
Concentration gradient of the various components.
d)
All of the above.
43.
The degree of super-cooling necessary is reduced by the presence of _____.
a)
Surface that serves as initial nuclei for crystal growth.
b)
Type of crystal structure.
c)
Number of components of the casting.
d)
None of the above.
44.
Centre drilling is an operation of
a)
(A) Drilling and counter sinking
b)
(B) Marking and centre location before drilling
c)
(C) Drilling and counter boring
d)
(D) Enlarging the diameter of a hole
45.
Which is the backbone of lathe machine?
a)
(A) Lathe bed
b)
(B) Tool post
c)
(C) Tail stock
d)
(D) Carriage
46.
Jig and Fixture are made in such type that
a)
(A) To guide the cutting tool
b)
(B) To hold the job strongly
c)
(C) To prevent the job from slipping
d)
(D) To get the maximum production in short time
47.
Main use of coolant on machine tool
a)
(A) To minimize the friction between two mating parts
b)
(B) To cool the parts of machine
c)
(C) To wet the two mating parts
d)
(D) To save the machine tool from heating
48.
Counter boring is done for
a)
(A) Accommodating socket head screws
b)
(B) Finishing bored holes
c)
(C) Enlarging holes to accurate size
d)
(D) Deburring hole ends
49.
Tap is used for
a)
(A) Making round hole on a job
b)
(B) Making internal threads
c)
(C) Making external threads on a rod
d)
(D) All of the above
50.
A final finishing operation is
a)
(A) Lapping
b)
(B) Filing
c)
(C) Tumbling
d)
(D) Honing
100 %
