← MES Jr. Grade
Past Questions — 2014
Graphical method, simplex method and transposition method are concerned with
A)
break-even analysis
B)
value analysis
C)
linear programming
D)
inventory control
Graphical method, simplex method, and transposition method are all standard techniques used to solve linear programming problems. The graphical method is used for two-variable LP problems, the simplex method is the general iterative optimization method, and the transposition method is another LP-solving approach. The other options are unrelated: break-even analysis deals with cost-volume-profit relationships, value analysis with improving value of products/services, and inventory control with stock management.
Which one of the following is not a queing theory model?
A)
orders waiting to be processed
B)
machines waiting to be repaired
C)
machines in an assembly line to be operated
D)
batch of finished products waiting to be transported
Queuing theory deals with situations where customers/jobs wait for service, such as orders waiting to be processed, machines waiting to be repaired, or finished products waiting to be transported. In an assembly line, machines are generally part of a production sequence rather than a waiting-line system, so this is not a typical queuing theory model.
In grinding wheel a dense structure is required for:
A)
tough material
B)
ductile material
C)
heavy cuts
D)
finishing cut
A dense grinding wheel has closely packed abrasive grains and less pore space. This gives a smoother surface finish and is suitable for finishing operations. For heavy cuts, a more open structure is preferred because it allows better chip clearance and reduces loading. Therefore, the correct answer is finishing cut.
The material used for coating the electrode is called
A)
flux
B)
slag
C)
protective layer
D)
deoxidizer
In arc welding, the electrode is coated with a material called flux. This coating helps stabilize the arc, protects the molten metal from atmospheric contamination, and forms slag to cover the weld pool. Slag is the by-product formed from the flux, not the coating itself. 'Protective layer' is a general description, and 'deoxidizer' is only one possible function of some coating ingredients, not the name of the coating.
The probability distribution of project completion time in PERT is
A)
Gaussian
B)
gamma
C)
beta
D)
binomial
In PERT, the project completion time is assumed to follow a beta distribution because activity times are uncertain and bounded between optimistic and pessimistic estimates. The beta distribution is flexible and suitable for modeling such skewed time estimates. Gaussian is not used in standard PERT assumptions, binomial is for discrete trials, and gamma is not the classical PERT distribution.
Scheduling gives information about
A)
when work should start and how much work should be completed in a certain period
B)
when work should completed
C)
how idle-time can be minimized
D)
proper utilization of machines
Scheduling in industrial engineering determines the timing of jobs and the amount of work to be done in a given period. It tells when work should start and how much should be completed within a specified time. Option (b) is incomplete, while (c) and (d) are more related to objectives of scheduling or production control, not its direct definition.
Carbon steel is
A)
made by adding carbon in steel
B)
refined from cast iron
C)
an alloy of iron and carbon with variable quantities of phosphorus and sulphur
D)
extremely brittle
Carbon steel is essentially an alloy of iron and carbon. In practice, it may also contain small variable amounts of impurities such as phosphorus and sulphur. Option (a) is incorrect because steel is not made by simply adding carbon to already formed steel in this context; rather, carbon is an alloying element in steel. Option (b) refers to cast iron being refined to produce steel, which is a process, not the definition of carbon steel. Option (d) is incorrect because carbon steel is not necessarily extremely brittle; its properties depend on carbon content.
PERT is a network analysis mainly based on
A)
event oriented
B)
activity oriented
C)
process oriented
D)
none of these
PERT (Program Evaluation and Review Technique) is primarily an event-oriented network analysis method. In PERT, the focus is on milestones or events marking the start or completion of activities, rather than on the activities themselves. By contrast, CPM is more activity-oriented. Therefore, the correct answer is event oriented.
The property of the material due to which it can cut another material is known as
A)
ductility
B)
malleability
C)
hardness
D)
none of these
The ability of a material to cut or resist being cut by another material is called hardness. Ductility is the ability to be drawn into wires, and malleability is the ability to be hammered into thin sheets. Therefore, the correct answer is hardness.
The heating of pressed compact to below the melting temperature of any constituent of the product, or at least below the melting temperature of all principal constituents of the product is called
A)
tempering
B)
compacting
C)
atomizing
D)
sintering
The process described is **sintering**: heating a pressed powder compact to a temperature below the melting point of the main constituents so that particles bond together without full melting.
- **Tempering** is a heat treatment for hardened steel to reduce brittleness.
- **Compacting** means pressing powder into a desired shape, not heating it.
- **Atomizing** is the process of breaking molten metal into fine droplets to make powder.
So the correct answer is **(d) sintering**.
Work study is concerned with
A)
improving present method and finding standard time
B)
motivation of workers
C)
improving production capability
D)
all of these
Work study in industrial engineering consists of method study and work measurement. Method study aims at improving the present method of doing a job, and work measurement is used to determine the standard time required for the job. It is not primarily concerned with motivation of workers or general production capability, so option (a) is correct.
Automobile bodies can be manufactured by employing
A)
deep drawing
B)
tube drawing
C)
wire drawing
D)
rod drawing
Automobile body panels are typically made from sheet metal by the deep drawing process, which forms flat sheets into complex shapes like car body parts. Tube drawing, wire drawing, and rod drawing are used to reduce the cross-section of tubes, wires, and rods respectively, not for making automobile bodies.
Which one of the following is not an attribute of the control chart?
A)
P chart
B)
R chart
C)
C chart
D)
np chart
Control charts commonly used in statistical quality control include the P chart, np chart, and R chart. A P chart is for fraction defective, an np chart is for number of defectives, and an R chart is for range. A C chart is used for counting defects per unit, but it is not usually listed as an attribute chart in the same sense as P and np charts; the question asks for the one that is not an attribute of the control chart, so the intended answer is C chart.
For gas welding of brasses, the most useful flame is:
A)
oxidizing flame
B)
reducing flame
C)
neutral flame
D)
no specific choice
In gas welding of brass, an oxidizing flame is most useful because brass contains zinc, and a slightly oxidizing flame helps reduce zinc fuming and gives better control in welding. A reducing flame is generally used for metals like aluminium and for preventing oxidation, while a neutral flame is the general-purpose flame for many steels. Hence, the correct choice is oxidizing flame.
The number of fundamental hand motion in micro-motion study are
A)
thirteen
B)
fifteen
C)
sixteen
D)
nineteen
In micro-motion study, the basic fundamental hand motions are known as therbligs. There are 17 therbligs in total, but the commonly taught fundamental hand motions for the hand are 13. Hence, the correct answer is thirteen. The other options do not match the standard count used in industrial engineering MCQs.
The prime objective of value engineering is to minimize
A)
cost of production
B)
time of production
C)
cost of labor
D)
cost of value
Value engineering aims to improve the function of a product or process at the lowest possible total cost. Its prime objective is to reduce unnecessary costs without reducing performance or quality. Among the given options, this is best represented by 'cost of production'. The other options are too narrow or incorrect: time of production and cost of labor are only parts of the total cost, and 'cost of value' is not a standard term.
Bar charts are suitable for
A)
minor works
B)
major works
C)
large projects
D)
all of these
Bar charts (Gantt charts) are simple planning and scheduling tools best suited for small or minor works where activities are limited and interdependencies are not very complex. For major works or large projects, network techniques like CPM/PERT are more suitable because they handle many activities and dependencies more effectively. Hence, the correct answer is minor works.
A forming operation which is carried on cylindrical rolls is termed as
A)
casting
B)
drawing
C)
rolling
D)
grinding
A forming operation carried out using cylindrical rolls is called rolling. In rolling, metal is passed between rotating rolls to reduce thickness or change cross-section. Casting is shaping by pouring molten metal into a mold, drawing is pulling material through a die, and grinding is a machining/finishing process, not a forming operation.
Time required for non conventional machining in comparison to the conventional machining is
A)
less
B)
equal
C)
more
D)
unpredictable
Non-conventional machining processes generally remove material at a slower rate than conventional machining. They are used for hard, brittle, or complex materials where conventional tools may not work well, so the machining time is usually higher. Hence, the time required is more.
The angle obtained between the machined surface and underside of the tool is generally named as
A)
clearance angle
B)
relief angle
C)
edge angle
D)
nose angle
The angle between the machined surface and the underside of the cutting tool is called the relief angle. It provides clearance so the tool does not rub against the workpiece. Clearance angle is a related term often used similarly, but in standard tool geometry terminology, the angle between the machined surface and the tool’s underside is the relief angle. Edge angle and nose angle refer to other parts of the cutting edge geometry, not this angle.
Filler metal is not required in the following type of welding process:
A)
Oxy-oxy-acetylene welding
B)
Arc welding
C)
Resistance welding
D)
Oxy-oxy- hydrogen welding
In resistance welding, heat is generated by the electrical resistance at the joint and the parts are pressed together to form the weld. Since the base metals themselves fuse and join under pressure, filler metal is generally not required. In contrast, oxy-acetylene welding, arc welding, and oxy-hydrogen welding commonly use filler metal when needed to build up the joint.
PERT has the following time estimate
A)
one time estimate
B)
two time estimate
C)
three time estimate
D)
four time estimate
PERT (Program Evaluation and Review Technique) uses three time estimates for each activity: optimistic time, most likely time, and pessimistic time. These are used to compute the expected activity duration. Hence, the correct answer is three time estimate. The other options are incorrect because PERT does not use one, two, or four time estimates.
The tool life under oblique cutting in comparison to that of orthogonal cutting is
A)
same
B)
less
C)
more
D)
none of these
In oblique cutting, the cutting edge is inclined and chip flow is smoother, so the cutting action is less severe than in orthogonal cutting. This generally reduces cutting temperature and tool wear, giving a longer tool life. Hence, tool life under oblique cutting is more than under orthogonal cutting.
In which of the following processes does electrode get consumed?
A)
TIG welding
B)
resistance welding
C)
thermit welding
D)
arc welding
In arc welding, the electrode is generally consumed as it melts and supplies filler metal to the weld pool. In TIG welding, the tungsten electrode is non-consumable. In resistance welding, no consumable electrode is used in the same sense. Thermit welding uses molten metal from the thermit reaction, not a consumed welding electrode.
Which one of the following is an alloy of copper and zinc?
A)
Brass
B)
Bronze
C)
Duralumin
D)
None of these
Brass is the alloy of copper and zinc. Bronze is mainly copper and tin, while duralumin is an aluminium alloy. Therefore, the correct answer is Brass.