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Past Questions
With the same tool life, the maximum material per minute is removed by
A)
increasing the cutting speed
B)
decreasing the cutting speed
C)
increasing the depth of cut
D)
increasing the feed rate
At fixed tool life, increasing feed is the most direct way to raise material-removal rate without the strong tool-life penalty of speed.
Bar chart is suitable for
A)
large project
B)
major work
C)
minor work
D)
all ofthese
Bar charts lack logic for complex dependencies, making them suitable only for minor or simpler works.
The electrodes used in spot welding have a tip of
A)
stainless steel
B)
aluminium
C)
copper
D)
brass
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'aluminium' (Option B).
Monel metal is an alloy of
A)
nickel and copper
B)
nickel and chromium
C)
nickel, chromium and iron
D)
copper and chromium
Based on established principles in Mechanical Engineering, the correct and most clinically/technically appropriate choice is 'nickel, chromium and iron' (Option C).
Green sand is a mixture of
A)
30% sand and 70% clay
B)
50% sand and 50% clay
C)
70% sand and 30% clay
D)
90% sand and 10% clay
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is '70% sand and 30% clay' (Option C).
In CPM the performance of a specific task is known as
A)
Activity
B)
Event
C)
Contract
D)
Dummy
In CPM, a specific task consuming time/resources is an activity.
ABC analysis is used in
A)
PERT
B)
CPM
C)
Inventory control
D)
Allofthe above
ABC analysis is an inventory management technique that determines the value of inventory items.
Drilling is an example of
A)
orthogonal cutting
B)
oblique cutting
C)
simple cutting
D)
uniform cutting
Drilling uses a multi-edge inclined cutting action and is classified as oblique cutting.
The property of a material essential for spring materials is
A)
stiffness
B)
ductility
C)
resilience
D)
plasticity
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'stiffness' (Option A).
The slack on various events at critical path on a PERT/CPM chart
A)
Decreases continuously
B)
Increases continuously
C)
Remains constant
D)
Unpredictable
All events on the critical path have zero total float/slack, so the slack remains zero.
The ability of a material to resist fracture due to high impact loads, is called
A)
strength
B)
stiffness
C)
toughness
D)
brittleness
Based on established principles in Mechanical Engineering, the correct and most clinically/technically appropriate choice is 'strength' (Option A).
Which of the following welding method uses a pool of molten metal?
A)
Carbon are welding
B)
Submerged arc welding
C)
TIGare welding
D)
MIG arc welding
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'TIGare welding' (Option C).
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 is calculated as the earliest start time plus the duration of the activity.
Break-even point is the point where
A)
fixed and variable cost lines intersect
B)
fixed and total cost lines intersect
C)
variable and total cost lines intersect
D)
salesrevenue and total expensive lines intersect
The break-even point is where total sales revenue equals total expenses (fixed and variable costs).
For are welding
A)
alternating current with high frequency is used
B)
alternating current with low frequency is used
C)
direct current is used
D)
none of these
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'none of these' (Option D).
Queing theory is associated with which of the
A)
Production time
B)
Waiting time
C)
Scales
D)
Inspection time
Queueing theory studies waiting lines and waiting time.
The velocity of tool along the tool face is known as
A)
shear velocity
B)
chip velocity
C)
cutting velocity
D)
mean velocity
Velocity along the tool face is the chip velocity.
The purpose of a gate is to
A)
deliver molten metal into the mould cavity
B)
act as areservoir for the molten metal
C)
feed the molten metal to the casting in order to compensate for the shrinkage
D)
deliver molten metal from pouring basin to gate
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'deliver molten metal from pouring basin to gate' (Option D).
Threading is an operation of
A)
smoothing and squaring the surface around a hole
B)
sizing and finishing a small diameter hole
C)
producing a hole by removing metal along the circumference of a hollow cutting tool
D)
cutting helical grooves on the external cylindrical surface
Threading cuts helical grooves on a cylindrical surface.
The property of a material due to which it breaks with little permanent distortion, is called
A)
brittleness
B)
ductility
C)
malleability
D)
plasticity
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'ductility' (Option B).
The type of tool used on lathe, shaper and planer is
A)
single point cutting tool
B)
two point cutting tool
C)
three point cutting tool
D)
multi-point cutting tool
Lathe, shaper, and planer operations predominantly use single-point cutting tools.
Relief angles on high speed steel tools usually vary from
A)
0° to 3°
B)
3° to 10°
C)
10° to 20°
D)
20° to 30°
High-speed-steel tool relief angles are typically around 3°–10°.
Continuous chips with built up edge are formed during machining of
A)
brittle metals
B)
ductile metals
C)
hard metals
D)
soft metals
Built-up edge is characteristic of ductile/soft materials at relatively low cutting speeds.
The cupola is used to manufacture
A)
pigiron
B)
cast iron
C)
wrought iron
D)
steel
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'cast iron' (Option B).
Riddle is used for
A)
smoothing and cleaning out depressions in the mould
B)
cleaning the moulding sand
C)
moistening the sand around the edge before removing pattern
D)
reinforcement of sand in the top part of moulding box
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'moistening the sand around the edge before removing pattern' (Option C).