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S.No Question Option A Option B Option C Option D Answer Solution Comments Status Action
1 The atoms in a simple cubic unit cell touch along: The corner The face diagonal The body diagonal The edge d Comments Active
2 Two-stroke engines in comparison to four-stroke engines have: Low power output and greater mechanical simplicity Better power output and low mechanical simplicity Better power output and greater mechanical simplicity Low power output and low mechanical simplicity c Comments Active
3 What is the primary safety advantage of the protected type flange coupling? It protects the workman from injuries due to protruding bolts and nuts. It provides automatic lubrication to the shaft. It minimizes friction between the shaft and the coupling. It enhances the torsional rigidity of the system. a Comments Active
4 What happens when the diameter of the shank of a bolt is made smaller than the core diameter of the thread (Dc)? The shank absorbs more energy, making the bolt stronger and better at absorbing shock The bolt becomes weaker and more likely to fail. The thread bears most of the load, and the shank is unaffected The bolt becomes heavier and less efficient. a Comments Active
5 Which of the following statements is NOT correct for 'Product Layout'? More process inventory Smooth and continuous workflow Less space requirement for same volume of production Better co-ordination and simple production planning and control a Comments Active
6 Which of the following factors does NOT affect fluid pressure? Area of the surface Gravitational acceleration Density of the fluid Depth of the fluid a Comments Active
7 Which of the following factors does NOT affect surface tension? Temperature Presence of surfactants Surface area of the liquid Nature of the liquid c Comments Active
8 Two masses of 3 kg and 6 kg are attached at 0.2 m and 0.1 m radius in the same plane. What should be the mass of a third counter mass at 0.15 m to balance the system? 3 kg 2 kg 1 kg 8 kg d Comments Active
9 How does the COP of a refrigeration system change with an increase in evaporator temperature? COP increases COP remains constant COP decreases COP becomes zero a Comments Active
10 Which command is used to change the appearance of dimensions in AutoCAD? DSETTINGS DIMSTYLE DSTYLE DIMEDIT b Comments Active
11 Which process is used to increase the strength of aluminum alloys through controlled heating and cooling? Annealing Quenching Normalizing Precipitation hardening d Comments Active
12 For a cantilever beam subjected to a point load W at its free end, what is the slope at the free end? \(θ = (WL)/EI\) \(θ = (WL^{2})/EI\) \(θ = (WL^{2})/2EI\) \(θ = (WL^{2})/3EI\) c Comments Active
13 The maximum deflection () of a cantilever beam of length L subjected to a point load P at its free end is given by: \(δ_{max}\) \(PL^{3}(8EI)\) \(PL^{3}/(3EI)\) \(PL^{3}/(6EI)\) \(PL^{3}/(48EI)\) b Comments Active
14 What is the expression for the slope θ(x) of the deflection curve of a beam? \(θ(x)=y(x)dx.\) \( θ(x)=d^{2}y/dx^{2}.\) \(θ(x)=dy/dx.\) \(θ(x)=y(x).\) c Comments Active
15 A heavier flywheel is required in which of the following? Both two and four stroke require same type of flywheel Flywheel is not required in operation of two and four stroke engines Four stroke engines relative to two stroke engines Two stroke engines relative to four stroke engines c Comments Active
16 Which of the following CANNONT be considered as a part of a simple carburetor? Idling system Float chamber Throttle valve Nozzle with metering orifice a Comments Active
17 Which of the following is not a function of material management? Warehousing Marketing strategy Procurement Inventory control b Comments Active
18 In a four-stroke cycle petrol engine, during suction stroke: Only petrol is sucked in Mixture of petrol and air is sucked in Only air is sucked in Suction stroke is intermittent, thus cannot be judged precisely b Comments Active
19 In order to move the cross slide, the feed screw is turned by rotating the: Square threaded screw Setover screw Handwheel Barrel c Comments Active
20 Which of the following processes is always quasi-static? Reversible isothermal process Sudden compression of a piston Free expansion of a gas Combustion in an engine a Comments Active
21 What is the main purpose of limits, fits, and tolerances in manufacturing? To increase the weight of the components To eliminate the need for machining To reduce the production cost only To ensure proper assembly and interchangeability d Comments Active
22 Which of the following units is used for specific gravity? \(g/cm^{2}\) \(m^{3}/kg\) No units \(kg/m^{3}\) c Comments Active
23 Observed time for a worker is 0.7 minutes and his performance rating is 80%. Calculate the normal time taken by the worker. 0.7 minutes 0.56 minutes 0.95 minutes 0.875 minutes b Comments Active
24 An ideal fluid is one which has: Linear behaviour between shear stress and velocity gradient Quadratic relation between shear stress and velocity gradient No resistance to shear stress No velocity gradient c Comments Active
25 When a bolted joint is subjected to eccentric loading, which stress is primarily induced in the bolt in addition to shear stress? Impact stress Bending stress Torsional stress Bearing stress b Comments Active
26 For a simply supported beam subjected to a uniformly distributed load (UDL) of intensity w (force per unit length) over its entire length L, what is the reaction force at each support? wL. (wL)/4. (wL)/2. (wL)/8. c Comments Active
27 Man machine chart is a special type of: String diagram Multiple activity chart Chronocycle graph Flow process chart b Comments Active
28 Which of the following is the primary function of a helical compression spring? To resist bending stresses To convert rotational motion into linear motion To prevent axial displacement To store and release energy d Comments Active
29 In oxyacetylene welding, if acetylene is observed to be in excess, the flame is called as: Oxidizing flame Reducing flame Neutral flame Originating flame b Comments Active
30 The 'soap' present in soluble oil (a type of cutting fluid) acts as a/an: Lubricating, cooling as well as emulsifying agent Cooling agent only Lubricating agent only Emulsifying agent only d Comments Active
31 How does throttle governing affect the efficiency of a steam turbine? Does not affect efficiency Reduces efficiency due to throttling losses Increases efficiency by improving heat recovery Increases efficiency by reducing steam pressure drop b Comments Active
32 In a combined cycle power plant, which of the following is used to generate additional power after the gas turbine? Hydraulic turbine Steam turbine Wind turbine Nuclear reactor b Comments Active
33 Which of the following metals is commonly alloyed with iron to produce tool steels? Tungsten Lead Copper Zinc a Comments Active
34 What is the full form of COMSOAL? Computer Method for Sequencing Operations for Assembly Lines Computerized Solution of Assembly Line Balancing Computerized Simulation of Assembly Line Computerized Simulation and Optimization of Assembly a Comments Active
35 Which type of feed is needed in facing operation? Perpendicular to the axis of rotation Parallel to the axis of rotation Both parallel and perpendicular to the axis of rotation Neither parallel nor perpendicular to the axis of rotation a Comments Active
36 Why does a multi-plate clutch transmit more torque than a single-plate clutch? It has less contact area. It has a stronger pressure plate. It has a larger diameter. It has more friction surfaces. d Comments Active
37 According to the ASHRAE numbering system, which of the following correctly represents the refrigerant R-134a? Carbon, 4 Hydrogen, 2 Fluorine atoms Carbon, 3 Hydrogen, 4 Fluorine atoms Carbon, 2 Hydrogen, 4 Fluorine atoms 1 Carbon, 2 Hydrogen, 3 Fluorine, 1 Chlorine atom c Comments Active
38 Which of the following represents the relationship between hoop strain () and longitudinal strain () in a thin cylinder? \(ε_{h}\) \(ε_{l}\) \(ε_{h} = 1/2 ε_{l} \) \(ε_{h} = 2ε_{l}\) \(ε_{h} = ε_{l}\) \(ε_{h}= 1/4 ε_{l}\) b Comments Active
39 Reaming is primarily used for achieving: Lower MRR Improved position tolerance Improved dimension tolerance Higher MRR c Comments Active
40 The Delphi method is best described as: A method that forecasts by collecting expert opinions in multiple rounds A method that uses historical data for trend analysis A time-series technique for projecting future values A quantitative method that applies moving averages for forecasting a Comments Active
41 What is the function of the WBLOCK command in AutoCAD? To change the colour of a block To create wireframe models To write a block to an external file To delete a block from the library c Comments Active
42 A company produces a product with the following cost structure:
Fixed Costs = $500,000
Variable Cost per Unit = $25
Selling Price per Unit = $50
If the company wants to achieve a profit of $200,000, how many units must be sold?		 35,000 units 20,000 units 14,000 units 28,000 units d Comments Active
43 A CAD object is rotated by 30° about the Z-axis. If the initial coordinates of a point are (4, 0), what will be the new coordinates after the rotation? (4, 1) (3.46, 2) (0, 4) (4, 2) b Comments Active
44 What is the primary function of a bevel protractor? To measure linear dimensions with high accuracy To measure the diameter of cylindrical objects To check the flatness of a surface To measure and set angles precisely d Comments Active
45 What is the primary function of a strain gauge? To measure pressure variations To measure strain in a material To measure temperature changes To measure electrical resistance directly b Comments Active
46 Which feature of CAD software helps in creating precise, scalable designs? Image filter tools Freehand drawing tool Grid and snap settings 3D rendering c Comments Active
47 In a quasi-static process, irreversibilities are: Maximized Negligible Dominant Unpredictable b Comments Active
48 Compute the value of 'Median' for the following data.
Item in data array 1 2 3 4 5 6 7
Time in minutes 4.2 4.3 4.7 4.8 5.1 5.4 5.8		 4.9 5.1 4.8 4.7 c Comments Active
49 Which of the following factors significantly affects the efficiency of a centrifugal compressor? The shape and speed of the impeller. The number of pistons used The use of intercooling between compression stages. The presence of a crankshaft for motion transmission a Comments Active
50 The wages of a welder fabricating a structure is an example of a/an_____. Indirect cost Direct cost Calculated cost Amplified cost b Comments Active
51 Which of the following operations CANNOT be included between CNC machining centers? Milling Drilling Tapping Welding d Comments Active
52 The glass transition temperature (Tg) of a polymer refers to: The temperature at which it becomes crystalline The temperature at which it melts The temperature at which it starts to burn The temperature at which it transitions from glassy to rubbery state d Comments Active
53 The compression ratio in case of diesel engines lies in the range of: 24-28 8-10 16-20 2-3 Comments Active
54 Which of the following factors DOES NOT affect the bending stress in a beam? Moment of inertia Bending moment Distance from the neutral axis Length of the beam d Comments Active
55 In printing machines, cam and follower mechanisms are used to: Adjust the font size automatically Feed paper sheets at regular intervals Increase the pressure of printing rollers Transfer ink to the paper b Comments Active
56 What is gear backlash? The hardness of the gear material The thickness of a single gear tooth The total runout of a gear during rotation The clearance or play between meshing gear teeth d Comments Active
57 The length of a belt in a belt drive system is calculated using the formula , where is the total length of the belt, is the centre distance, and are the diameters of the pulleys. What does the term ( represent? \(L = 2C + π(D1 + D2) + (D1-D2)2/4C\) \(L\) \(C\) \(D1, D2\) \(D1-D2)2/4C\) The additional length due to the difference in pulley sizes The effect of belt tension The correction factor for friction The extra length due to pulley alignment a Comments Active
58 What is the function of coolant in a drilling operation? To clean the machine table To remove burrs from the hole To reduce heat and improve tool life To increase spindle speed c Comments Active
59 Which of the following is NOT a characteristic of brittle fracture? Minimal plastic deformation before fracture Rapid crack propagation Ductile necking at the fracture site Occurs at low temperatures or high strain rates c Comments Active
60 If the properties such as velocity, pressure etc. change at a point with respect to time, the flow is called______ flow. Uniform Steady Non-uniform Unsteady d Comments Active
61 In oxyacetylene gas welding, the temperature at the inner cone of neutral flame is around: 2300°C 4000°C 3200°C 2600°C c Comments Active
62 The symbol used to represent 'Inspection' in a flow process chart used in a work study is given by (a/an): Square Dee Arrow Triangle a Comments Active
63 Slip and creep are related to the operation of: Flat belt drive systems only V-belt drive systems only All types of belt drive systems Gear drive systems c Comments Active
64 The power to weight ratio for external combustion engines as compared to internal combustion engines: Is high Is low Is equal Can be greater or lower, it depends on the situation b Comments Active
65 Why is it important to apply uniform pressure while mounting a strain gauge? To prevent the gauge from overheating To improve the flexibility of the gauge To avoid air gaps and ensure proper adhesion To increase the resistance of the strain gauge c Comments Active
66 As per the Indian standard system, the point angle in a normal drill is: 90 degrees 118 degrees 75 degrees 100 degrees b Comments Active
67 Which characteristic of Mixed Model Line Balancing allows flexibility in adjusting the output of different products? Each product should have entirely different operations to maximize variety. The production line must be stopped and reconfigured every time the product demand changes. Only identical products can be produced on the same assembly line. Products must have similar tasks and processing requirements to ensure smooth workflow. d Comments Active
68 Which of the following is an advantage of using the Hole Basis System in manufacturing? Eliminates the need for tolerances Makes it difficult to achieve interchangeability Easier machining of holes with standard tools Requires less precision in manufacturing d Comments Active
69 Which of the following statements regarding strain energy in the elastic region is true? Strain energy is completely recoverable when the load is removed. Strain energy is entirely lost as heat during unloading. Strain energy is only partially recoverable after unloading Strain energy increases permanently with each load cycle. a Comments Active
70 When selecting plant and equipment for a manufacturing operation, which of the following factors will have the greatest impact on determining the break-even point (BEP)? The variability in the cost of raw materials used by the equipment The depreciation rate of the equipment over its useful life The initial capital investment required for the equipment The fixed operational costs associated with the equipment d Comments Active
71 In an eddy current dynamometer, eddy currents are produced in the_____. Cooling fins Bearings Rotating disc Stator coils c Comments Active
72 The standard marking system of grinding wheels, as developed by the Indian standard marking system, gives the indication about: The hardness and grit size of the grinding wheel The time taken to complete the finishing of the workpiece Material removal rate The pressure between the grinding wheel and the workpiece a Comments Active
73 Which of the following best describes the motion of the follower in a typical radial cam mechanism? Translational motion along the cam axis Rotational motion synchronized with the cam Reciprocating or oscillating motion perpendicular to cam rotation Circular motion c Comments Active
74 Which of the following is a key characteristic of an open cycle gas turbine? The working fluid is exhausted to the atmosphere Operates only in a vacuum The working fluid is continuously recirculated Uses a heat exchanger to reuse heat a Comments Active
75 Which material is commonly used for strain gauge sensing elements? Copper Aluminium Silver Constantan d Comments Active
76 The load in a hydraulic dynamometer is controlled by____. Increasing the brake pedal force Varying the electrical resistance Changing the air pressure Adjusting the quantity of working fluid d Comments Active
77 What is a block in CAD software? A feature that deletes duplicate objects. A pre-drawn object that can be reused multiple times A tool for creating 3D models. A setting that controls line thickness b Comments Active
78 In a transverse fillet weld subjected to a tensile force, the primary mode of stress in the weld throat is: Tensile stress Shear stress Bending stress Compressive stress a Comments Active
79 Which of the following is a key objective of material management in an organization? To prioritise material procurement based solely on immediate production needs, without considering future demand fluctuations or long-term supplier relationships To maintain a high level of inventory to prevent any potential stock outs, even if it results in excessive storage costs To ensure the right quality and quantity of materials are available at the right time, the lowest cost, while minimizing waste and stock outs To procure materials at the lowest possible price, ignoring quality and supplier reliability to maximize short-term savings c Comments Active
80 A self-energizing brake is one in which____. The brake operates without friction. No external force is required to apply the brake The friction force is required to apply the brake The friction force helps applying d Comments Active
81 What does the number ‘22’ in the refrigerant R-22 indicate? The molecular weight of the refrigerant The pressure required for refrigeration cycle operation The boiling point of the refrigerant in °C. A specific designation assigned based on chemical composition. d Comments Active
82 Additives that are normally used for mixing with oils to increase lubricating and cooling qualities of various oils are_____. Hydrogen and nitrogen Carbon and helium Sulphure and chlorine Sodium and potassium c Comments Active
83 If a tire gauge reads 35 psi, what is the absolute pressure inside the tire, assuming atmospheric pressure is 14.7 psi? 14.7 psi 49.7 psi 35 psi 20.3 psi b Comments Active
84 Which instrument is commonly used to check parallelism in machine tool testing? Vernier caliper Micrometer Dial gauge and straightedge Hardness tester c Comments Active
85 Which of the following is a critical characteristic of a workpiece that influences process engineering decisions? The colour of the workpiece The machinability and hardness of the material The brand name of the raw material supplier The packaging method used for transportation b Comments Active