Inspector of Factories • Paper-III
A dummy activity is used in PERT network to describe -
A)
Precedence relationship
B)
Necessary time delay
C)
Resource restriction
D)
Resource idleness
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Resource restriction' (Option C).
Inspector of Factories • Paper-III
The space lattices with two lattice parameters does not belong to the crystal system -
A)
triclinic
B)
rhombohedral
C)
hexagonal
D)
tetragonal
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'hexagonal' (Option C).
Inspector of Factories • Paper-III
Fe3C is known as ____________.
A)
Cementite
B)
Ferrite
C)
Austenite
D)
None
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Austenite' (Option C).
Inspector of Factories • Paper-III
Which of the following forecasting 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 Mechanical Engineering, the correct and most appropriate choice is 'Simple average method' (Option A).
Inspector of Factories • Paper-III
Single point thread cutting tool should ideally have -
A)
zero rake
B)
positive rake
C)
negative rake
D)
normal rake
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'negative rake' (Option C).
Inspector of Factories • Paper-III
Which one of the following is true in case of simplex method of linear programming?
A)
The constants of constraints equation may be positive or negative
B)
Inequalities are not converted into equations
C)
It cannot be used for two-variable problems
D)
The simplex algorithm is an iterative procedure
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'The simplex algorithm is an iterative procedure' (Option D).
Inspector of Factories • Paper-III
A feasible solution to the linear programming problem should -
A)
Satisfy the problem constraints
B)
Optimize the objective function
C)
Satisfy the problem constraints and non-negativity restrictions
D)
Satisfy the non-negativity restrictions
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Satisfy the problem constraints and non-negativity restrictions' (Option C).
Inspector of Factories • Paper-III
For cutting of brass with single-point cutting tool on a lathe, tool should have -
A)
negative rake angle
B)
positive rake angle
C)
zero rake angle
D)
zero side relief angle
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'zero rake angle' (Option C).
Inspector of Factories • Paper-III
The iron ore mostly used for the production of pig iron is____________.
A)
Magnetite
B)
Hematite
C)
Limonite
D)
Pyrite
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Pyrite' (Option D).
Inspector of Factories • Paper-III
Tool/life is generally better when -
A)
grain size of the metal is large
B)
grain size of the metal is small
C)
hard constituents arc present in the microstructure of the tool material
D)
none of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'grain size of the metal is large' (Option A).
Inspector of Factories • Paper-III
If the rate of cooling of a liquid metal is rapid, the temperature of freezing/crystallization will -
A)
decrease
B)
increase
C)
remain constant
D)
none of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'increase' (Option B).
Inspector of Factories • Paper-III
On heating, if one solid phase splits into two solid phases, the reaction is -
A)
eutectoid
B)
peritectoid
C)
peritectic
D)
eutectic
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'peritectic' (Option C).
Inspector of Factories • Paper-III
Little’s law is a relationship between:
A)
Stock level and lead time in an inventory system
B)
Waiting time and length of the queue in a queuing system
C)
Number of machines and job due dates in a scheduling problem
D)
Uncertainty in the activity time and project completion time
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Uncertainty in the activity time and project completion time' (Option D).
Inspector of Factories • Paper-III
Which one of the following conditions should be satisfied for the application of optimality test on an initial solution of transportation model?
A)
Number of allocations should be less than m + n – 1
B)
Number of allocations should be equal to m + n – 1
C)
Number of allocations should be equal to m + n
D)
Number of allocations should be more than m + n
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Number of allocations should be less than m + n – 1' (Option A).
Inspector of Factories • Paper-III
Composite materials are -
A)
made mainly to improve temperature resistance
B)
used for improved optical properties
C)
made with strong fibres embedded in weaker and softer matrix to obtain strength better than strength of matrix
D)
made with strong fibres embedded in weaker and softer matrix to obtain strength better than strength of both matrix and filler
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'used for improved optical properties' (Option B).
Inspector of Factories • Paper-III
During ultrasonic machining, the metal removal is achieved by -
A)
high frequency eddy currents
B)
high frequency sound waves
C)
hammering action of abrasive particles
D)
rubbing action between tool and workpiece
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'rubbing action between tool and workpiece' (Option D).
Inspector of Factories • Paper-III
Using cutting material which can sustain high temperature -
A)
cerment
B)
high carbon steel alloy
C)
composite of two metals
D)
none of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'none of these' (Option D).
Inspector of Factories • Paper-III
Which one are inorganic materials -
A)
biological materials
B)
minerals and ceramics
C)
plastics
D)
wood
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'wood' (Option D).
Inspector of Factories • Paper-III
In inventory control theory, the economic order quantity (E.O.Q.) is:
A)
Average level of inventory
B)
Optimum lot size
C)
Lot size corresponding to break-even analysis
D)
Capacity of a warehouse
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Optimum lot size' (Option B).
Inspector of Factories • Paper-III
The Cupola is used to manufacture ____________.
A)
Pig iron
B)
Cast iron
C)
Steel
D)
None
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'nan' (Option D).
Inspector of Factories • Paper-III
Production scheduling is simpler, and high volume of output and high labour efficiency are achieved in the case of:
A)
Fixed position layout
B)
Process layout
C)
Product layout
D)
A combination of line and process layout
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'A combination of line and process layout' (Option D).
Inspector of Factories • Paper-III
In PERT, the distribution of activity times is assumed to be:
A)
Normal
B)
Gamma
C)
Beta
D)
Exponential
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Gamma' (Option B).
Inspector of Factories • Paper-III
Hot rolling of mild steel is carried out -
A)
at recrystallisation temperature
B)
between 100°C to 150°C
C)
below recrystallisation temperature
D)
above recrystallisation temperature
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'below recrystallisation temperature' (Option C).
Inspector of Factories • Paper-III
In a queuing problem, if the arrivals are completely random, then the probability distribution of number of arrivals in a given time follows:
A)
Poisson distribution
B)
Normal distribution
C)
Binomial distribution
D)
Exponential distribution
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Normal distribution' (Option B).
Inspector of Factories • Paper-III
The front rake required to machine brass by HSS tool is
A)
15°
B)
5°
C)
0°
D)
-5°
Based on established principles in the relevant subject area, the correct and most appropriate choice is '-5°' (Option D).
