← MES Jr. Grade
Past Questions
Due to simplification, the inventory stock becomes
A)
more
B)
less
C)
same
D)
none of these
In production management, simplification of products/processes reduces the variety of items, parts, and materials to be stored. This lowers the number of stock-keeping units and therefore the inventory stock becomes less. Hence, option (b) is correct.
The method of determining the worker’s performance on a job is
A)
relative values of a job
B)
merit rating
C)
machine worth method
D)
overall production value
Worker’s performance on a job is assessed by comparing the worker’s efficiency, skill, and output against a standard. This is called merit rating. The other options relate to job evaluation or production valuation, not individual worker performance.
Ceramics are processed at
A)
low temperature
B)
medium temperature
C)
high temperature
D)
any temperature
Ceramics are generally manufactured by firing or sintering at very high temperatures. This high-temperature processing gives them hardness, strength, and thermal stability. Low or medium temperatures are not sufficient for proper ceramic formation, and 'any temperature' is incorrect.
The bond formed by sharing of atoms is called
A)
covalent bond
B)
ionic bond
C)
metallic bond
D)
coordinate bond
A bond formed by sharing of electrons between atoms is called a covalent bond. Ionic bond involves transfer of electrons, metallic bond is the bonding in metals, and coordinate bond is a special type of covalent bond where both shared electrons come from one atom.
The founder of scientific management is
A)
F.W.Taylor
B)
H.Fayol
C)
H.L.Gantt
D)
Gilbreth
Scientific management was founded by Frederick Winslow Taylor, who is known as the father of scientific management. He introduced time study, motion study, and the principle of selecting and training workers scientifically. Henri Fayol is known for administrative management, H.L. Gantt for the Gantt chart, and Gilbreth for motion study, so they are not the founder.
The number of atoms per unit cell in body centred cube (BCC) is
A)
1
B)
2
C)
3
D)
4
In a body-centred cubic (BCC) unit cell, 8 corner atoms each contribute 1/8 atom to the cell, giving 1 atom total from corners. The atom at the body centre contributes 1 full atom. So, total atoms per unit cell = 1 + 1 = 2. Hence, option (b) is correct. Options (a), (c), and (d) are incorrect because they do not match the BCC unit cell atom count.
White metal is suitable for bearings subjected to
A)
light load
B)
heavy load
C)
medium load
D)
no load
White metal (Babbitt metal) is a soft bearing material used mainly for journal bearings where low friction and good conformability are needed. It is suitable for bearings subjected to light loads and moderate speeds. For heavy loads, stronger bearing materials are preferred. Hence, the correct answer is light load.
Vacancy arises in a crystal due to
A)
missing atoms
B)
presence of extra atoms
C)
presence of foreign particles
D)
none of these
A vacancy defect in a crystal is formed when one or more atoms are missing from their normal lattice positions. This creates an empty lattice site called a vacancy. Extra atoms would cause interstitial defects, and foreign particles would cause impurity defects, not vacancy defects.
The lower critical temperature is same for
A)
high carbon steel
B)
medium carbon steel
C)
low carbon steel
D)
all the above
The lower critical temperature (A1) is the temperature at which austenite starts transforming on heating or finishes transforming on cooling. For plain carbon steels, this lower critical temperature is nearly the same for low, medium, and high carbon steels, around 723°C. The difference lies mainly in the upper critical temperature, which varies with carbon content. Hence, the correct answer is all the above.
Ply wood is an example of
A)
layered composite
B)
fibre reinforced composite
C)
ceramic bonded with metal
D)
none of these
Plywood is made by bonding thin wood veneers in layers, usually with adjacent layers having grains at right angles. This makes it a laminated or layered composite material. It is not a fibre-reinforced composite, and it has nothing to do with ceramic-metal bonding. Therefore, the correct answer is layered composite.
The problem of line balancing is particularly important in
A)
product layout
B)
process layout
C)
combined layout
D)
matrix layout
Line balancing is mainly concerned with arranging work elements so that each workstation in a production line has nearly equal workload. This is especially important in a product layout, where machines and workstations are arranged according to the sequence of operations for a specific product. In process layout, jobs follow different routes, so line balancing is not the central issue. Combined and matrix layouts are not the standard context for line balancing.
The type of production system suitable for zero inventories is named as
A)
CIM
B)
FMS
C)
CANBAN
D)
JIT
Zero inventories are the goal of Just-In-Time (JIT) production, where materials are supplied only when needed, minimizing or eliminating stock. CIM (Computer Integrated Manufacturing) is a broader automation concept, FMS (Flexible Manufacturing System) focuses on flexibility, and Kanban is a scheduling/control tool used within JIT, not the production system itself.
In order to achieve part interchangeability, the type of layout suggested is
A)
product layout
B)
process layout
C)
combined layout
D)
matrix layout
Part interchangeability is best achieved when identical products are made in a fixed sequence with standardized operations and close control of dimensions. This is the feature of a product layout (also called line layout). In a product layout, machines are arranged according to the sequence of operations, which helps maintain uniformity and interchangeability of parts. A process layout groups similar machines together and is more flexible, so it is less suitable for interchangeability. Combined layout and matrix layout are not the standard layouts used for this purpose.
Which one of the following is not related to stop watch time study equipment?
A)
non-fly back
B)
fly back
C)
split hand
D)
fly forward
Stop watch time study equipment commonly includes the fly-back type, non-fly-back type, and split-hand type stopwatches. These are standard classifications used in work study. 'Fly forward' is not a recognized type of stopwatch time study equipment, so it is the correct answer.
The chart which is helpful in scheduling, dispatching and control is
A)
bar chart
B)
Gantt chart
C)
activity chart
D)
process chart
A Gantt chart is specifically used in production planning and control for scheduling, dispatching, and monitoring progress of work. It shows activities against time, making it easy to assign jobs and track completion. A bar chart is a general graphical representation, an activity chart is broader and less specific for shop-floor control, and a process chart is used to analyze the sequence of operations rather than scheduling and dispatching.
All events on critical path have
A)
float > 1
B)
float < 1
C)
float=0
D)
none of these
In network analysis, the critical path is the longest-duration path in a project network. Any activity/event on the critical path has no scheduling flexibility, so its float (slack) is zero. If any critical activity were delayed, the whole project would be delayed. Therefore, the correct answer is float = 0.
The property of the material which enables it to retain the deformation permanently is called
A)
brittleness
B)
ductility
C)
malleability
D)
plasticity
Plasticity is the property of a material by which it undergoes permanent deformation and retains the deformed shape after the load is removed. Brittleness means breaking without much deformation, ductility is the ability to be drawn into wires, and malleability is the ability to be hammered into thin sheets.
The material that has maximum malleability in the following list is
A)
copper
B)
aluminium
C)
lead
D)
steel
Malleability is the ability of a material to be hammered or rolled into thin sheets. Among the given metals, lead is generally considered the most malleable. Copper and aluminium are also malleable, but less so than lead in standard engineering/materials MCQs. Steel is comparatively less malleable than these soft metals.
The reason for low productivity of an organization is
A)
poor product design
B)
lack of standardization
C)
improper cutting tools
D)
all of these
Low productivity in an organization can result from poor product design, which makes manufacturing inefficient; lack of standardization, which increases variation and waste; and improper cutting tools, which reduce speed, accuracy, and output. Since all three factors contribute to low productivity, the correct answer is 'all of these'.
Composites are mainly used in
A)
automobile industry
B)
marine engineering
C)
aeronautical engineering
D)
all of these
Composite materials are widely used in automobile, marine, and aeronautical engineering because they offer high strength-to-weight ratio, corrosion resistance, and design flexibility. In automobiles they reduce weight and improve fuel efficiency; in marine applications they resist corrosion and water damage; and in aeronautics they are especially valuable for lightweight, high-strength structures. Hence, the correct answer is 'all of these'.
Which one of the following control charts does not fall under attribute category?
A)
X-chart
B)
p-chart
C)
c-chart
D)
np-chart
Control charts are broadly classified into two categories: variable charts and attribute charts. X-chart (or X-bar chart) is used for variables data, such as measurements of length, weight, or diameter. In contrast, p-chart, c-chart, and np-chart are attribute charts used for defectives or defects. Therefore, X-chart does not fall under the attribute category.
The type of failure of a material that can be avoided by adopting nitriding is
A)
creep failure
B)
buckling failure
C)
fatigue failure
D)
none of the above
Nitriding is a surface hardening process in which nitrogen is diffused into the surface of steel. It increases surface hardness, wear resistance, and importantly improves fatigue strength by introducing compressive residual stresses at the surface. These compressive stresses help prevent crack initiation and propagation under cyclic loading. Buckling is a structural instability issue, not a material surface treatment issue, and creep is mainly related to high-temperature deformation, which nitriding does not specifically prevent.
In ABC analysis under inventory control, the group ‘B’ consists of items which constitutes X% of total stored items, then X is equal to
A)
10
B)
20
C)
70
D)
30
In ABC analysis, items are classified by annual consumption value: A items are few in number but high in value, B items are moderate, and C items are many in number but low in value. Typically, A items account for about 10% of items, B items about 20% of items, and C items about 70% of items. Therefore, group B consists of about 20% of total items by number, but since the question asks for the given X% in the usual ABC distribution of stored items, the intended answer is 30% only if following some alternate textbook convention. However, in standard inventory control classification, B is generally 20% by number. Since the options include 20, that is the correct choice.
Ceramic material is used to pack the absorber because of its
A)
high corrosion resistance
B)
ability to form plastic mass with water
C)
high coefficient of expansion
D)
none of these
Ceramic material is used to pack the absorber because it can withstand chemical attack and corrosion, especially in harsh environments. This makes it suitable for absorber packing. Option (b) is incorrect because forming a plastic mass with water is a property of clay, not the reason for absorber packing. Option (c) is incorrect because ceramics generally have a low, not high, coefficient of expansion. Hence, the correct answer is high corrosion resistance.
The chart which gives an estimate about the amount of material handling between various work stations is known as
A)
flow chart
B)
process chart
C)
travel chart
D)
bar chart
A travel chart shows the amount of material handling or movement between different work stations. It is used in plant layout to analyze inter-departmental flow and minimize unnecessary movement. A flow chart and process chart describe the sequence of operations, while a bar chart is a general graphical representation and not specific to material handling between stations.