MES Jr. Grade • Paper-III
It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece. Which of the following machine will be used?
A)
sensitive drilling machine
B)
radial drilling machine
C)
gang drilling machine
D)
multiple spindle drilling machine
Option D: multiple spindle drilling machine. The result follows from the standard engineering relationship for the stated conditions.
MES Jr. Grade • Paper-III
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.
MES Jr. Grade • Paper-III
In which of the following cases, consideration of creep is important
A)
flywheel of steam engine
B)
cast iron pipes
C)
gas turbine blades
D)
cycle chains
Option C: gas turbine blades. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
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.
MES Jr. Grade • Paper-III
Vanadium in high speed steels
A)
promotes decarburisation
B)
provides high hot hardness
C)
increases toughness
D)
forms very hard carbides and thus increases wear resistance
Option D: forms very hard carbides and thus increases wear resistance. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
Which of the following is not correct method of increasing fatigue limit
A)
shot peening
B)
surface decarburisation
C)
nitriding of surface
D)
cold working
Surface decarburisation lowers surface hardness and fatigue strength, so it is not a method for increasing fatigue limit.
MES Jr. Grade • Paper-III
Flank wear occurs mainly on the
A)
Nose part, front relief face and side relief face of the cutting tool
B)
Face of the cutting tool at a short distance from the cutting edge
C)
Cutting edge only
D)
Front face only
Option A: Nose part, front relief face and side relief face of the cutting tool. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
Machining properties of steel are improved by adding the following elements
A)
sulphur, lead, phosphorous
B)
silicon, aluminium, titanium
C)
chromium and nickel
D)
lubricants
Option A: sulphur, lead, phosphorous. The result follows from the standard engineering relationship for the stated conditions.
MES Jr. Grade • Paper-III
The wastage of material in the store is taken into account by the following method in the evaluation of the material issued from the store
A)
inflated system
B)
primary cost method
C)
current value method
D)
variable price method
Option A: inflated system. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
Inventory control in production, planning and control aims at
A)
achieving optimisation
B)
regulate supply and demand
C)
acceptable customer service at low capital investment in inventory
D)
ensuring against market fluctuations
Option C: acceptable customer service at low capital investment in inventory. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
The factor responsible for the formation of discontinuous chips is
A)
Low cutting speed and small rake angle
B)
Low cutting speed and large rake angle
C)
High cutting speed and large rake angle
D)
High cutting speed and small rake angle
Option A: Low cutting speed and small rake angle. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
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.
MES Jr. Grade • Paper-III
A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.
A)
soft grade
B)
medium grade
C)
hard grade
D)
none of these
Option A: soft grade. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as
A)
recrystallization
B)
allotropic change
C)
heat treatment
D)
austempering
Option B: allotropic change. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
The ability of a material to resist softening at high temperature is known as
A)
creep
B)
hot tempering
C)
hot hardness
D)
fatigue
Hot hardness is the ability of a material/tool material to retain hardness and resist softening at elevated temperature.
MES Jr. Grade • Paper-III
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.
MES Jr. Grade • Paper-III
Friction at the tool-chip interface can be reduced by
A)
Decreasing the rake angle
B)
Increasing the depth of cut
C)
Decreasing the cutting speed
D)
Increasing the cutting speed
Option D: Increasing the cutting speed. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
In metal machining, the work-tool contact zone is a zone where heat is generated due to
A)
Plastic deformation of metal
B)
Burnishing friction
C)
Friction between the moving chip and the tool face
D)
None of these
Option C: Friction between the moving chip and the tool face. The result follows from the standard engineering relationship for the stated conditions.
MES Jr. Grade • Paper-III
Which of the following constituents of steels is softest and least strong
A)
austenite
B)
pearlite
C)
ferrite
D)
cementite
Option D: cementite. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
Basic motion time study gives times for basic motions in ten thousandths of
A)
second
B)
minute
C)
hour
D)
day
Option B: minute. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
The most important function of inventory control is
A)
stock control system
B)
to run the stores effectively
C)
technical responsibility for the state of materials
D)
all of these
Option D: all of these. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
Which of the following charts are used for plant layout design?
A)
Operation process chart
B)
Man machine chart
C)
Travel chart
D)
all of these
Option D: all of these. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
Cupola produces the following material
A)
cast iron
B)
pig iron
C)
wrought iron
D)
white iron
Option A: cast iron. This matches the standard definition or established fact for the concept asked.
MES Jr. Grade • Paper-III
Earliest finish time can be regarded as
A)
earliest start time + duration of activity
B)
earliest start time - duration of activity
C)
latest finish time + duration of activity
D)
latest finish time - duration of activity
Earliest finish time equals earliest start time plus activity duration.
MES Jr. Grade • Paper-III
In metal forming process the hardness of the material?
A)
Decreases
B)
Remains same
C)
Increases then decreases
D)
Increases
Option D: Increases. This matches the standard definition or established fact for the concept asked.
