MES Jr. Grade • Paper-II
Which of the following screw thread is adopted for power transmission in either direction?
A)
Acme threads
B)
Square threads
C)
Buttress threads
D)
Multiple threads
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Buttress threads' (Option C).
MES Jr. Grade • Paper-III
Arc stability is better with
A)
AC welding
B)
DC welding
C)
Both AC and DC welding
D)
Specially designed wave forms
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'AC welding' (Option A).
MES Jr. Grade • Paper-III
The type of information that we get from the scheduling chart is
A)
when the work will be completed
B)
to what extent the machines are utilised
C)
when does the work start and how much will be completed at a particular time
D)
to what extent can the idling time be eliminated
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'when the work will be completed' (Option A).
MES Jr. Grade • Paper-III
Delta iron occurs in this temperature range
A)
1400°C to 1530°C
B)
723 to 910°C
C)
910 to 1400°C
D)
400 to 723°C
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '400 to 723°C' (Option D).
MES Jr. Grade • Paper-III
Which of the following methods takes a fraction of forecast error into account for the next period forecast?
A)
Simple average method
B)
Moving average method
C)
Weighted moving average method
D)
Exponential smoothening method
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Simple average method' (Option A).
MES Jr. Grade • Paper-III
The Iron–Carbon diagram and the TTT curves are determined under
A)
equilibrium and non-equilibrium conditions respectively
B)
non-equilibrium and equilibrium conditions respectively
C)
equilibrium conditions for both
D)
non-equilibrium conditions for both
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'non-equilibrium conditions for both' (Option D).
MES Jr. Grade • Paper-III
Dummy activity
A)
is one which consumes time and resources and indicates precedence
B)
is one which does not consume time or resources and indicates precedence
C)
is an event only
D)
can replace a real activity
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'is an event only' (Option C).
MES Jr. Grade • Paper-III
Eutectic reaction for iron-carbon system occurs at
A)
600°C
B)
723°C
C)
1147°C
D)
1493°C
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '1147°C' (Option C).
MES Jr. Grade • Paper-III
PERT network is
A)
an activity oriented network
B)
an event oriented network
C)
an activity and event oriented network
D)
it is a review network
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'it is a review network' (Option D).
MES Jr. Grade • Paper-III
In an assembly line for assembling toys, five workers are assigned tasks which take time of 10, 8, 6, 9 and 10 minutes respectively. The balance delay for the line is
A)
43.3%
B)
14.8%
C)
14%
D)
16.3%
Based on established principles in the relevant subject area, the correct and most appropriate choice is '14%' (Option C).
MES Jr. Grade • Paper-III
When using a simple moving average to forecast demand, one would
A)
Give equal weight to all demand data
B)
Assign more weight to recent demand data
C)
Include new demand data in the average without discarding the earlier data
D)
Include new demand data in the average after discarding some of the earlier demand data
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Give equal weight to all demand data' (Option A).
MES Jr. Grade • Paper-III
Convert [2 1 -1 -1] from four-index system to three-index system.
A)
[2 1 0]
B)
[3 0 1]
C)
[1 -1 -1]
D)
[1 -2 1]
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '[3 0 1]' (Option B).
MES Jr. Grade • Paper-III
Shrinkage allowance on pattern is provided to compensate for shrinkage when
A)
the temperature of liquid metal drops from pouring to freezing temperature
B)
the metal changes from liquid to solid state at freezing temperature
C)
the temperature of solid phase drops from freezing to room temperature
D)
the temperature of metal drops from pouring to room temperature
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'the temperature of metal drops from pouring to room temperature' (Option D).
MES Jr. Grade • Paper-III
Crater wear on tools always starts at some distance from the tool tip because at that point
A)
cutting fluid does not penetrate
B)
normal stress on rake face is maximum
C)
temperature is maximum
D)
tool strength is minimum
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'tool strength is minimum' (Option D).
MES Jr. Grade • Paper-III
In the austempering heat treatment process austenite changes to
A)
Martensite
B)
Troosite
C)
Sorbite
D)
Bainite
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Bainite' (Option D).
MES Jr. Grade • Paper-III
In a green-sand moulding process, uniform ramming leads to
A)
less change of gas porosity
B)
uniform flow of molten metal into the mould cavity
C)
greater dimensional stability of the casting
D)
less sand expansion type of casting defect
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'greater dimensional stability of the casting' (Option C).
MES Jr. Grade • Paper-III
Which of the following point defects is non-stoichiometric in nature?
A)
Schottky defect
B)
Metal excess defect
C)
Interstitial defect
D)
Impurity defect
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Metal excess defect' (Option B).
MES Jr. Grade • Paper-III
In sheet metal work, the cutting force on the tool can be reduced by
A)
grinding the cutting edges sharp
B)
increasing the hardness of tool
C)
providing shear angle on tool
D)
increasing the hardness of die
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'grinding the cutting edges sharp' (Option A).
MES Jr. Grade • Paper-III
In drop forging, forging is done by dropping
A)
the work piece at high velocity
B)
the hammer at high velocity
C)
the die with hammer at high velocity
D)
a weight on hammer to produce the requisite impact
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'the work piece at high velocity' (Option A).
MES Jr. Grade • Paper-III
In simplex method of solution of linear programming problem, at the optimum level of solution, the values of the stack variables are
A)
Infinitely large
B)
Positive or negative
C)
Zeros
D)
Can take any value
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Infinitely large' (Option A).
MES Jr. Grade • Paper-III
‘Shadow price’ is the term used in linear programming to denote
A)
Optimum cost assigned to the variable
B)
Value assigned to one unit of capacity
C)
Maximum cost/unit
D)
Minimum cost/unit
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Minimum cost/unit' (Option D).
MES Jr. Grade • Paper-III
A company uses 2555 units of an item annually. Delivery lead time in 8 days. The recorder point (in number of units) to achieve optimum inventory is
A)
7
B)
8
C)
56
D)
60
Based on established principles in the relevant subject area, the correct and most appropriate choice is '7' (Option A).
MES Jr. Grade • Paper-III
Delphi method of forecasting is applicable
A)
when previous data from the market are available
B)
when a study about a product already in the market is required
C)
when a new product is launched in the market
D)
the market is highly competitive
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'when a new product is launched in the market' (Option C).
MES Jr. Grade • Paper-III
For a product, the forecast and the actual sales for December 2002 were 25 and 20 respectively. If the exponential smoothing constant (α) is taken as 0.2, the forecast sales for January 2003 would be
A)
21
B)
23
C)
24
D)
27
Based on established principles in the relevant subject area, the correct and most appropriate choice is '27' (Option D).
MES Jr. Grade • Paper-III
Which flame is suitable for welding of ferrous metals, Cu and Al alloys?
A)
Oxidizing flame
B)
Carburizing flame
C)
Neutral flame
D)
Blue flame
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Oxidizing flame' (Option A).
