← MES Jr. Grade
Past Questions
Which of the following operation is first performed?
A)
Spot facing
B)
Boring
C)
Tapping
D)
Drilling
Option D: Drilling. This matches the standard definition or established fact for the concept asked.
In a shaper, the length of stroke is increased by
A)
Increasing the centre distance of bull gear and crank pin
B)
Decreasing the centre distance of bull gear and crank pin
C)
Increasing the length of the arm
D)
Decreasing the length of the slot in the slotted lever
Option A: Increasing the centre distance of bull gear and crank pin. This matches the standard definition or established fact for the concept asked.
Job evaluation is the method of determining the
A)
relative worth of jobs
B)
skills required by a worker
C)
contribution of a worker
D)
contribution of job
Option A: relative worth of jobs. This matches the standard definition or established fact for the concept asked.
In perpetual inventory control, the material is checked when it reaches its
A)
minimum value
B)
maximum value
C)
average value
D)
alarming value
Option A: minimum value. This matches the standard definition or established fact for the concept asked.
The break-even point represents
A)
the most economical level of operation of any industry
B)
the time when unit can run without loss and profit
C)
time when industry will undergo loss
D)
time for overhauling a plant
Option B: the time when unit can run without loss and profit. This matches the standard definition or established fact for the concept asked.
In malleable iron, carbon is present in the form of
A)
nodular aggregates of graphite
B)
free carbon
C)
spheroids
D)
flakes
Option B: free carbon. This matches the standard definition or established fact for the concept asked.
The ultimate tensile strength and yield strength of most of the metals, when temperature change from 0 to 100°C will
A)
increase
B)
decrease
C)
remain same
D)
none of these
Option B: decrease. The result follows from the standard engineering relationship for the stated conditions.
The molecules in a solid moves
A)
in a random manner
B)
in a haphazard way
C)
a circular motion
D)
back and forth like tiny pendulums
Option C: a circular motion. This matches the standard definition or established fact for the concept asked.
In A-B-C analysis, which class of items are generally large in number?
A)
A
B)
B
C)
C
D)
none of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'C' (Option C).
Which type of tapers can be produced by attachment method?
A)
internal
B)
external
C)
both internal and external
D)
none of the mentioned
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'both internal and external' (Option C).
Composite materials are
A)
made mainly to improve temperature resistance.
B)
used for improved optical properties.
C)
made with strong fibers embedded in weaker and softer matrix to obtain strength better than strength of matrix.
D)
made with strong fibers embedded in weaker and softer matrix to obtain strength better than strength of both matrix and filler.
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'made with strong fibers embedded in weaker and softer matrix to obtain strength better than strength of both matrix and filler.' (Option D).
Which of the following is not a specification of lathe machine tool?
A)
chuck size
B)
swing over diameter
C)
distance between centres
D)
bed length
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'chuck size' (Option A).
Only two perpendicular components of cutting force act on the tool in case of
A)
Oblique cutting
B)
Orthogonal cutting
C)
3D cutting
D)
Inclined cutting
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Orthogonal cutting' (Option B).
The portion of the cutting part enclosed between the face and the flank is called
A)
wedge
B)
shank
C)
base
D)
rake face
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'shank' (Option B).
The difference between the upper limit and lower limit of a dimension is known as
A)
Basic size
B)
Nominal size
C)
Tolerance
D)
Actual size
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Nominal size' (Option B).
Sharing of electrons between neighboring atoms results in
A)
metallic bond
B)
ionic bond
C)
covalent bond
D)
none of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'ionic bond' (Option B).
Several machine tools can be controlled by a central computer in
A)
NC (Numerical Control) machine tool
B)
CNC (Computer Numerical Control) machine tool
C)
DNC (Direct Numerical Control) machine tool
D)
CCNC (Central-Computer Numerical Control) machine tool
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'NC (Numerical Control) machine tool' (Option A).
Pearlite phase in steel is made up of
A)
alternate layers of martensite and cementite
B)
alternate layers of ferrite and cementite
C)
alternate layers of ferrite and martensite
D)
alternate layers of bainite and cementite
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'alternate layers of ferrite and cementite' (Option B).
Which of the following motion does a milling machine has?
A)
vertical motion
B)
crosswise motion
C)
longitudinal motion
D)
all of the mentioned
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'crosswise motion' (Option B).
Chills are used in casting moulds to
A)
achieve directional solidification
B)
reduce possibility of blow hole
C)
reduce the freezing time
D)
increase the smoothness of cast surface
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'achieve directional solidification' (Option A).
On increasing the value of rake angle, the strength of tool
A)
increases
B)
decreases
C)
remains constant
D)
is unpredictable
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'is unpredictable' (Option D).
Non-Traditional machining can also be called as
A)
Contact Machining
B)
Non-contact machining
C)
Partial contact machining
D)
Half contact machining
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Half contact machining' (Option D).
Size of shaper is generally given by
A)
stroke length
B)
motor power
C)
weight of the machine
D)
rate size
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'stroke length' (Option A).
Size of shaper is given by
A)
stroke length
B)
motor power
C)
weight of the machine
D)
rate size
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'weight of the machine' (Option C).
The vacuum in case of Electron Beam machining is of the order of
A)
10-2 mm of mercury
B)
10-5 mm of mercury
C)
10-7 mm of mercury
D)
10-9 mm of mercury
Based on established principles in the relevant subject area, the correct and most appropriate choice is '10-2 mm of mercury' (Option A).