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Past Questions
The method of measuring and/or checking the quality of a product in terms of specified standard
A)
Manufacturing
B)
Material handling
C)
Inspection
D)
None of these
Inspection is the process of measuring and/or checking a product against specified standards to verify its quality. Manufacturing is the production process, and material handling refers to movement/storage of materials, so neither describes quality checking.
A welding which is done by burning a combustible gas with air or oxygen in a concentrated flame of high temperature is
A)
Braze welding
B)
Electric welding
C)
Gas welding
D)
Arc welding
In gas welding, a combustible gas such as acetylene is burned with air or oxygen to produce a concentrated high-temperature flame that melts the metal edges. Braze welding uses a filler metal without melting the base metal, while electric welding and arc welding use electric current/arc rather than a gas flame.
A production lathe which is used to manufacture any number of identical pieces in the minimum time is
A)
Engine lathe
B)
A capstan and turret lathe
C)
Speed lathe
D)
None of these
A capstan and turret lathe is designed for repetitive production of identical components in minimum time. It allows multiple tools to be set on a turret, so successive operations can be performed quickly with little setup time. An engine lathe is mainly a general-purpose machine, and a speed lathe is used for simple operations like turning, polishing, or wood turning, not mass production. Therefore, the correct answer is capstan and turret lathe.
Heat treatment refers to a combination of processing of a metal or alloy in the solid state for the purpose of obtaining desired properties
A)
Balancing & Wiring
B)
Heating & Cooling
C)
Welding & Lighting
D)
None of these
Heat treatment is the process of heating and then cooling a metal or alloy in the solid state to obtain desired properties such as hardness, strength, ductility, or toughness. Hence, the correct combination is Heating & Cooling. The other options are unrelated to heat treatment.
The ratio of the direct stress to the strain produced is called
A)
Shear modulus
B)
Rigidity
C)
Young’s modulus
D)
None of these
Direct stress divided by the corresponding longitudinal strain is defined as Young’s modulus. It measures the stiffness of a material under tensile or compressive loading. Shear modulus/rigidity, on the other hand, is the ratio of shear stress to shear strain, so options (a) and (b) are incorrect.
A measure of the deformation produced in the member by the load is
A)
Strain
B)
Stress
C)
Elongation
D)
None of these
Strain is the measure of deformation produced in a member due to load. It is defined as change in length per unit original length. Stress, on the other hand, is the internal resisting force per unit area, and elongation is the actual increase in length, not the measure of deformation itself.
Which is not one of the principal parts of a Column & Knee type of milling machine?
A)
Piston ring
B)
Knee
C)
Base
D)
Column
A column and knee type milling machine has principal parts such as the base, column, knee, saddle, table, spindle, overarm/arbor support, and related mechanisms. The knee is one of its main parts, and the base and column are also principal structural components. A piston ring is an engine component, not a part of a milling machine. Therefore, the correct answer is Piston ring.
The length, breadth and depth of a water container is 3m, 2m and 1m respectively, the volume is
A)
600 litres
B)
3000 litres
C)
2000 litres
D)
None of these
Volume of a rectangular container = length × breadth × depth = 3 × 2 × 1 = 6 m³. Since 1 m³ = 1000 litres, the volume is 6 × 1000 = 6000 litres. So none of the listed numeric options match, making the correct option (d) None of these.
What is a prime consideration in designing the new plant building?
A)
Material handling
B)
Drawings
C)
Machine loading
D)
Value engineering
In plant layout, a prime consideration in designing a new plant building is efficient material handling, because the arrangement should minimize movement of materials, reduce handling cost, and improve workflow. 'Drawings' are not a design consideration, 'machine loading' is only one part of layout planning, and 'value engineering' is a broader cost-reduction method rather than the prime layout factor.
The main rotating parts which are to be balanced mechanically are
A)
Inlet valve & outlet valve
B)
Piston & Piston ring
C)
Crankshaft & Flywheel
D)
None of these
In dynamics of machinery, the main rotating parts that require mechanical balancing are the crankshaft and the flywheel, because their rotation can produce unbalanced centrifugal forces leading to vibration. Piston and piston rings are reciprocating parts, not rotating parts, so they are not the main components balanced mechanically in this context. Inlet and outlet valves also do not belong to the main rotating parts.
A machine used to bore holes in large and heavy parts such as engine frame, steam engine cylinders, machine housing etc. is
A)
Grinding machine
B)
Boring machine
C)
Planing machine
D)
Milling machine
A boring machine is specifically used to enlarge or finish existing holes in large, heavy workpieces such as engine frames, steam engine cylinders, and machine housings. Grinding machines are for finishing by abrasion, planing machines are for producing flat surfaces, and milling machines are mainly used for cutting with a rotating multi-point cutter.
Which one is not type of belts?
A)
Flat belt
B)
Circular belt or rope
C)
Vee belt
D)
Chain
Belts used in power transmission include flat belts, circular belts (rope drives), and V-belts. A chain is not a belt; it belongs to chain drive systems. Therefore, the correct answer is Chain.
Any member of a structure which is in compression may be called
A)
A column
B)
A truss
C)
A strut
D)
None of these
A structural member that is subjected to compression is generally called a strut. A column is also a compression member, but the term 'column' is usually used for vertical compression members in buildings and similar structures. Since the question asks for any member in compression, the correct general term is a strut. A truss is a complete framework, not a single compression member.
What type of annealing consists of - heating the steel slightly above the critical point, holding it at that temperature for a considerable period & slowly cooling?
A)
Spheroidise annealing
B)
Process annealing
C)
Full annealing
D)
None of these
In full annealing, steel is heated slightly above the critical temperature, held there for a sufficient period, and then cooled very slowly, usually in the furnace. This produces a soft, ductile structure. Spheroidise annealing is used mainly to spheroidize carbide particles, and process annealing is done below the critical range to remove internal stresses in cold-worked steel.
The melting point of pure iron is
A)
1355°C
B)
1500°C
C)
1553°C
D)
1535°C
The melting point of pure iron is about 1538°C, and in standard exam references it is commonly given as 1535°C. So option (d) is correct. The other values are not the accepted melting point of pure iron.
Which are widely used length standards?
A)
Kilometre & furlong
B)
International standard metre & Imperical standard yard
C)
Centimetre & inch
D)
None of these
The widely used length standards in metrology are the international standard metre and the imperial standard yard. These have historically served as reference standards for metric and imperial systems, respectively. Option (a) lists units of length but not standard reference standards; option (c) gives common units, not standards. Hence, option (b) is correct.
A machine tool that removes metal as the work is fed against a rotating multipoint cutter is
A)
Grinding machine
B)
Boring machine
C)
Gear hobbing machine
D)
Milling machine
A milling machine removes metal by feeding the workpiece against a rotating multipoint cutter (the milling cutter). This is the defining feature of milling. A grinding machine uses an abrasive wheel, a boring machine enlarges existing holes with a single-point tool, and a gear hobbing machine is a specialized gear-cutting machine, not the general machine described here.
Flat belts and V-belts may be employed
A)
to transmit mechanical power from one shaft to electrical power
B)
to transmit power from one shaft to another where it is not necessary to maintain an exact speed ratio between the two shafts
C)
to stop the engine
D)
None of these
Flat belts and V-belts are used for power transmission between shafts. They are suitable where slight slip and creep can be tolerated, so an exact speed ratio is not essential. Option (a) is incorrect because belts do not transmit mechanical power to electrical power; that requires a generator or alternator. Option (c) is incorrect because stopping an engine is the function of brakes, not belts. Hence, option (b) is correct.
A machine in which a metal cutting operation is performed by means of a rotating abrasive wheel that acts as a cutting tool and is used to finish workpiece which must show a high surface quality, accuracy of shape and dimension is
A)
Drilling machine
B)
Grinding machine
C)
Boring machine
D)
None of these
A grinding machine uses a rotating abrasive wheel as the cutting tool. It is mainly used for finishing operations where high surface quality, close dimensional accuracy, and accurate shape are required. Drilling machines are used for making holes, and boring machines are used to enlarge and finish existing holes, so they do not match the description.
The shear stress is tangential to the area over which it acts
A)
True
B)
False
C)
Both (a) & (b)
D)
None of these
Shear stress acts parallel or tangential to the surface/area on which it acts, unlike normal stress which acts perpendicular to the area. Therefore, the statement is correct. Options (b), (c), and (d) are incorrect.
A method of uniting two or more pieces of metal by means of a fusible alloy or metal, applied in the molten state is
A)
Welding
B)
Soldering
C)
Balancing
D)
None of these
The process of joining two or more metal pieces using a fusible alloy/metal applied in molten form is called soldering. In soldering, the base metals are not melted; only the filler metal (solder) melts and forms the joint. Welding differs because it generally involves melting the base metal itself. Therefore, option (b) is correct.
For balancing single cylinder engine, a counter weight is added to
A)
Gudgeon pin
B)
Piston
C)
Connecting rod
D)
Crankshaft
In a single-cylinder engine, balancing is achieved by adding a counterweight to the crankshaft to counteract the rotating and partially reciprocating masses. The crankshaft counterweight helps reduce vibration and improve smooth operation. The gudgeon pin, piston, and connecting rod are moving parts, but the counterweight is not added to them for balancing.
Inspection is considered to be a tool of
A)
Quality control
B)
Material management
C)
Production control
D)
Plant layout
Inspection is used to check whether the product, material, or work conforms to the required standards. In industrial engineering, it is regarded as a key tool of quality control because it helps detect defects and maintain quality. The other options are not correct: material management deals with procurement and inventory, production control deals with scheduling and monitoring production, and plant layout concerns arrangement of machines and facilities.
Certain statistical techniques have been derived to evaluate machines, materials and processes by observing capabilities and trends so that continual analysis and predictions may be made to control the desired quality level. The statistical techniques are called
A)
Fundamental of statistics
B)
Statistical quality control methods
C)
Sampling inspection
D)
None of these
The question describes statistical techniques used to study machines, materials, and processes, observe trends, and make predictions to maintain the desired quality level. This is the definition of Statistical Quality Control (SQC) methods. Option (c) sampling inspection is only one part of quality control, not the broad technique described. Option (a) fundamental of statistics is too general. Therefore, the correct answer is (b).
Brakes are machine elements
A)
that absorb either kinetic or potential energy in the process of slowing down or stopping moving parts
B)
that permits the connection and disconnection of shafts
C)
to store fuel
D)
None of these
A brake is a machine element used to slow down or stop a moving body by converting its kinetic energy into heat; in some cases it also absorbs potential energy. Option (b) describes a clutch, not a brake. Option (c) is unrelated. Therefore, (a) is correct.