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S.No Question Option A Option B Option C Option D Answer Solution Comments Status Action
1 If 30 m is the height difference between the two rollers and 60 m is the distance between the centres of the rollers, what is the angle formed between the upper surface of a sine bar and the surface plate (datum)? 60° 45° 30° 90° c Comments Active
2 What is the basic function of a single volute casing in a centrifugal pump? To increase the speed of the fluid To divide the fluid into multiple streams To direct the fluid flow and convert kinetic energy into pressure To reduce the temperature of the fluid c Comments Active
3 The diagram below shows the stress-strain curves of two materials, Material A and Material B. Material A has a finer grain structure, while Material B has a coarser grain structure. Based on the diagram, which of the following statements is correct regarding their toughness?
 Toughness can be determined directly by comparing the slopes of the stress-strain curves. Both materials have the same toughness, as indicated by their identical total strain values. Material A (finer grain size) has higher toughness than Material B (coarser grain size). Material A (finer grain size) has lower toughness than Material B (coarser grain size). c Comments Active
4 For a closed system undergoing a process (not a cycle), the first law is expressed as: Q = W ΔS 0 \(≥\) PV = nRT ΔU = Q − W d Comments Active
5 Which of the following statements best describes a special-purpose lathe used for heavy-duty applications? A T-lathe is used for machining flat plates and sheet metal components. A missile lathe is designed for lightweight parts with small diameters. A gap bed lathe is mainly used for cutting small, high-precision components. A wheel lathe is designed for machining railway wheels, including journals and treads. d Comments Active
6 Parallel shank type and morse taper shank type drills belong to _____ type of drills. straight-fluted twist flat hexagonal b Comments Active
7 In the resolution of a force, along which of the following directions is a force generally resolved? Two parallel directions A single fixed direction Two mutually perpendicular directions Any three random directions c Comments Active
8 Which of the following back pressure gauges is NOT used in Pneumatic Comparators? Water column back pressure gauge Differential back pressure gauge Venturi back pressure gauge Absolute back pressure gauge d Comments Active
9 Which of the following statements is correct regarding electroplating? The rate of anodic dissolution is found greater to the rate of deposition of metal onto the substrate. The metal is deposited on the anode. The rate of anodic dissolution is found equal to the rate of deposition of metal onto the substrate. The dissolution of metal starts at the cathode. c Comments Active
10 The reason for a company to strongly favour buying a component even if they could make it themselves is that the: company has excess manufacturing capacity vendor offers a lower cost and higher quality company wants to improve its quality control company wants to maintain design secrecy b Comments Active
11 In the Carbon Arc Welding (CAW) process, ____________ is used to create an electric arc. cellulosic electrode stainless steel electrode pure graphite electrode rutile electrode c Comments Active
12 Which of the following factors primarily influences the toughness of a material? Elastic modulus Yield strength Grain size Surface finish c Comments Active
13 If the area under the shear force diagram between two specified points is equal to P, then the difference in the bending moments at those points will be: P 2P Zero \(\frac{P}{2}\) a Comments Active
14 Which of the following is NOT a requirement of an ignition system in a spark-ignition engine? Timing the spark to coincide with the compression stroke Generating sufficient voltage to jump the spark plug gap Maintaining consistent spark duration across all RPMs Mixing air and fuel in the intake manifold d Comments Active
15 Fatigue failure in materials occurs due to: high temperature cyclic loading constant stress low temperature b Comments Active
16 If any part is immersed in a heated 'magnesium dihydrogen phosphate' solution, then what could be the coating process? Cladding Anodising Calorising Parkerizing d Comments Active
17 To measure surface finish, the two types of stylus instruments used are: Contact and Non-contact True Datum and Surface Datum Manual and Automated Digital and Analog a Comments Active
18 Which of the following best describes the primary function of a simple carburetor in a petrol engine? To compress the air-fuel mixture before combustion To atomise and mix fuel with air in the proper ratio To electronically control the fuel injection timing To regulate exhaust emissions via catalytic conversion b Comments Active
19 The function of the supporting column in a Tool Maker’s Microscope is to _____. illuminate the workpiece provide vertical working distance hold the specimen in place magnify the image c Comments Active
20 नीच दशाए गए प्रतबल-वकत वक्र का कौन-सा त्र, तन्य पदाथ म काय कठोरन (work hardening) को नरूपत करता ह?

संदर्भ:
Plastic Region : प्लास्टिक क्षेत्र
Stress : प्रतिबल
Yield Point : पराभव बिंदु
Ultimate Stress : चरम प्रतिबल
Fracture Point : विभंजन बिंदु
Elastic Region : प्रत्यास्थ क्षेत्र
Strain : विकृति		 C-D E-F A-C D-E a Comments Active
21 Which factor does NOT directly affect the power required to drive a centrifugal pump? Atmospheric pressure Flow rate Fluid viscosity Fluid density a Comments Active
22 __________________ is used in Submerged Arc Welding process. Tungsten electrode Consumable bare electrode Graphite electrode Carbon electrode b Comments Active
23 Gauge pressure is measured as: the pressure due solely to the fluid's density the pressure relative to a perfect vacuum the difference between absolute pressure and atmospheric pressure the pressure including atmospheric pressure c Comments Active
24 Which of the following is NOT a feature of pneumatic comparators? No wearing of parts Presence of hysteresis High range of amplification Non-contact inspection of work parts b Comments Active
25 What is a coplanar force system? A system where forces do not intersect at a point A system where all forces lie in different planes A system where forces act only in one direction A system where all forces lie in the same plane d Comments Active
26 Which test is commonly used to measure the malleability of a material? Torsion test Hardness test Impact test Compression test d Comments Active
27 Which of the following elements is NOT a primary alloying element in stainless steel? Carbon Lead Nickel Chromium b Comments Active
28 The area between the 'Total revenue' line and the 'Total costs' line to the right of the break-even point represents: loss zone profit zone variable costs fixed costs b Comments Active
29 A material exhibits a large amount of plastic deformation before fracture and can absorb significant energy. This material is said to have: high modulus of elasticity high hardness high toughness high strength c Comments Active
30 In the _____ method, a large amount of solder is melted in a tank that is closed. soldering iron infrared soldering flame soldering dip soldering d Comments Active
31 Thermal stress in a composite bar DOES NOT depend on which of the following factors? Coefficient of thermal expansion Modulus of elasticity Area of cross-section Temperature change c Comments Active
32 When is the lead screw engaged in a lathe? Only during thread-cutting operations During both knurling and continuous feed motion Continuously for all machining processes Only for turning and facing operations a Comments Active
33 Compared to a single volute casing, a double volute casing with a vaned diffuser generally provides: increased wear on pump components lower efficiency due to complex flow paths better hydraulic performance and efficiency lower pressure generation capability c Comments Active
34 In a parting-off operation, how is the cutting tool fed into the workpiece? By adjusting the tailstock manually By moving the carriage along the lathe bed By rotating the cross-slide screw by hand By rotating the headstock spindle directly c Comments Active
35 Given an annual usage value of 400 units, the procurement cost is ₹20 per order, cost per piece is ₹100 and cost of carrying inventory is 10%. Calculate the economic order quantity. 30 40 60 50 b Comments Active
36 Which of the following end conditions could characterise a cantilever beam? A fixed support at one end and free at the other A fixed support at one end and pin support at the other A hinged support at one end and free at the other A roller support at one end and hinged at the other a Comments Active
37 What does mean effective pressure (MEP) indicate in engine performance analysis? The pressure of the fuel injected into the cylinder The average pressure acting on the piston during the complete engine cycle that would produce the measured work output The maximum pressure reached in the combustion chamber The difference between intake and exhaust pressures b Comments Active
38 The modulus of resilience is characterised by the area located under the stress-strain curve up to the: proportional limit ultimate point fracture point point where strain hardening starts a Comments Active
39 In a radial flow pump, the fluid primarily flows: inward radially toward the impeller centre parallel to the pump shaft outward radially from the impeller centre in a circular path around the pump shaft c Comments Active
40 A thin cylindrical pressure vessel with inside radius ‘R' and metal thickness 't' is subject to an internal fluid pressure 'P.' What is the value of longitudinal stress? \(\frac{PR}{t}\) \(\frac{PR}{2t}\) \(\frac{2PR}{t}\) \(\frac{3PR}{2t}\) Comments Active
41 The moment of inertia of a circular area about a tangent to the circle is calculated as the moment of inertia of the circular area about its centroidal axis in the plane of the lamina ______ (where r is the circle radius). + \(πr^{4}\) \(×πr^{2}/2\) \(×1.5\) - \(πr^{4}\) Comments Active
42 The function of fluxes in soldering is _____. to use consumable bare electrode in combination with a flux feeder tube to heat metal over a range of temperature up to fusion and then allow to cool to remove dirt particles and other surface compounds from the surfaces to be soldered to remove oxides and other surface compounds from the surfaces to be soldered d Comments Active
43 What bond is commonly employed in super abrasive grinding wheels? Metal bond Shellac bond Brazed bond Oxychloride bond a Comments Active
44 The value of density of water at room temperature is _____. 10 gm/cm3 or 10000 kg/m3 3 gm/cm3 or 3000 kg/m3 1 gm/cm3 or 1000 kg/m3 2 gm/cm3 or 2000 kg/m3 c Comments Active
45 Which of the following CANNOT be generally utilised as an abrasive material in the grinding process? Aluminium oxide Super alloy Diamond Silicon carbide b Comments Active
46 What is the primary mechanism by which thermal radiation transfers energy? Direct transfer via physical contact Electromagnetic waves Convection due to fluid motion Conduction through molecular collisions b Comments Active
47 The manometric efficiency in a pump is the ratio of: the actual pressure head produced to the theoretical pressure head the theoretical head to the actual head the fluid density to the pump speed the temperature difference between inlet and outlet a Comments Active
48 In a two-stroke petrol engine, the inlet port is opened by the piston: 30° to 40° before BDC 30° to 40° after BDC 40° to 55°before BDC 45° to 55° before TDC a Comments Active
49 The Stefan-Boltzmann law is derived from: Wien's Displacement Law Kirchhoff's Law Planck's Law Fourier's Law c Comments Active
50 उत्पादन इंजीनियरी में गियर हॉबन (gear hobbing), एक ______ है। ज्वाइनिंग प्रक्रिया (joining process) मशीनन प्रक्रिया (machining process) पृष्ठ सम्पूर्ति प्रक्रिया (surface finishing process) प्राथमिक रूपण प्रक्रिया (primary shaping process) b Comments Active
51 The reversed Carnot cycle is used as a basis for which of the following? Heat engines Refrigerators and heat pumps Internal combustion engines Steam turbines b Comments Active
52 Which of the following interactions is expected to produce chip during a grinding process? Chip-bond Chip-workpiece Grit-workpiece Bond-workpiece c Comments Active
53 A cantilever beam with a span length of L m carries a uniform moment of intensity ‘M’ N-m/m. Which of the following statements is correct? Shear force throughout the length will be M/L. Shear force throughout the length will be ML. Shear force throughout the length will be ML/(b) Shear force throughout the length will be zero. d Comments Active
54 Identify the gas used in Tungsten Inert Gas Welding (TIG). Oxygen-hydrogen mixtures Argon-helium mixtures Oxygen-nitrogen mixtures Hydrogen-nitrogen mixtures b Comments Active
55 प्रारंभिक छाया प्रक्षेपित्र (shadow projector) का नुकसान यह था कि _____| प्रतिबिंब, विकृत हो जाता था स्क्रीन, ऑपरेटर से अत्यधिक दूर होती थी प्रतिबिंब अत्यधिक छोटा बनता था आवर्धन, अपर्याप्त था d Comments Active
56 What happens to the mechanical properties of mild steel when carbon content increases? Strength increases and ductility decreases Strength decreases and ductility increases Both strength and hardness decrease Both strength and ductility increase a Comments Active
57 What is the effect of compression ratio (CR) on the air standard efficiency of otto and diesel cycles? Lower CR always leads to higher efficiency. CR has no effect on efficiency. Efficiency increases with CR in SI engines and decreases in CI engines. Higher CR always leads to higher efficiency. d Comments Active
58 A cantilever beam with span length L m carries a point load ‘w’ N at the free end. What will be the value of the resisting bending moment at the fixed end? 2wL wL \(\frac{wL}{2}\) Zero b Comments Active
59 The efficiency of the Carnot cycle is defined as: \(\frac{Work done}{Heat rejected }\) \(\frac{Heat supplied }{Work done}\) \(\frac{Heat rejected}{Heat supplied }\) \(\frac{Work done}{Heat supplied}\) d Comments Active
60 Which of the following pigments provide anti-corrosion characteristics in the organic coating? Zinc phosphate Lithopone Limestone Barium metaborate a Comments Active
61 Which of the following is true about the weldability of mild steel and alloy steel? Mild steel is easier to weld than alloy steel. Both mild and alloy steel have the same weldability. Alloy steel is easier to weld than mild steel. Weldability depends only on the thickness of the steel. a Comments Active
62 In Arc Welding process, welding cables are used for _________________. connecting to the hand held electrode directly and conducting current to it cleaning the surface to be welded conduction of current from the welding machine to the electrode holder frequently igniting the welding torch c Comments Active
63 In the analytical method, how is the resultant force determined when all forces act in the same direction? By dividing the total force by the number of forces By adding all the forces together By multiplying all the forces together By subtracting the smallest force from the largest b Comments Active
64 The ______ concept is derived from the Pareto’s 80/20 rule curve. XYZ ABC VED FSN b Comments Active
65 In graphical representation of the cost–volume relationship, the point where the 'Total revenue' line intersects the 'Total costs' line represents the: margin of safety variable costs maximum profit break-even point d Comments Active
66 What is the purpose of introducing two equal and opposite forces at a different point on a rigid body? To transfer the original force to a new location To increase the force acting on the body To balance the rotational motion of the body To change the direction of the applied force a Comments Active
67 The _____ in a broaching tooth is provided to prevent rubbing of the tool with the workpiece. front rake angle hook angle back-off angle face angle c Comments Active
68 What is lack of penetration in welding defects? Failure of the filler metal to fuse with the parent metal Small holes throughout the weld metal Cracks either in the weld metal or in the parent metal Failure of the filler metal to penetrate into the root of the joint d Comments Active
69 Which of the following components generally evaporate in the organic coating? Solvents Binder Additives Pigments a Comments Active
70 उत्पादन के संबंध में मात्रा संबंधी निर्णयन (volume decision-making) में पूर्वानुमान का प्रभाव पड़ता है? यह विनिर्माण लागत को कम करता है यह उत्पाद के विशिष्ट डिजाइन को निर्धारित करता है यह सुनिश्चित करता है कि सभी उत्पाद अंतर्राष्ट्रीय मानकों को पूरा करते हों यह निर्धारित करता है कि उत्पादन स्टॉक के लिए है या तत्काल ऑर्डर के लिए d Comments Active
71 . A symmetrical channel section has width of its top and bottom flanges as 100 mm and thickness 10 mm. The web is 80 mm high between flanges and 10 mm thick. Its moment of inertia about a centroidal axis in its plane parallel to the flanges is 449.3 104 mm4. Calculate its moment of inertia about a parallel axis at the top face of the upper flange. 1.1149.3 × 104 43,000 1415 × 103 20.3 × 10 a Comments Active
72 Which of the following is NOT a type of nitriding process? Liquid nitriding Plasma nitriding Vacuum nitriding Gas nitriding c Comments Active
73 Three collinear horizontal forces of magnitudes 250 N, 150 N and 350 N are acting on a rigid body. If the 150 N force acts in the opposite direction, determine the resultant force. 550 N 250 N 450 N 350 N c Comments Active
74 A centrifugal pump has a hydraulic power output of 10 kW and consumes 15 kW of mechanical power. Calculate its overall efficiency. 66.7% 80% 50% 75% a Comments Active
75 Forced convection is primarily characterised by: heat transfer occurring solely through radiation the natural buoyancy-driven flow of the fluid the absence of any temperature gradients in the fluid the use of external devices such as fans or pumps to move the fluid d Comments Active
76 वेल्डिंग दोषों में संगलन (Fusion) की कमी क्या है? यह पूरे वेल्ड धातु में छोटे-छोटे छिद्रों का एक समूह है। यह भरण धातु (filler metal) की मूल धातु के साथ संगलित होने में विफलता है। यह भरण धातु (filler metal) की वेल्डिंग जोड़ में प्रवेश करने में विफलता है। यह वेल्ड में धातुमल (slag) या अन्य अशुद्धियों का पाशन (entrapment) है। b Comments Active
77 The type of surfaces best suited for measuring surface roughness using a Light Interference Microscope are _____. soft or thin surfaces surfaces requiring high-precision 3D mapping liquid surfaces very large surface areas a Comments Active
78 The design of a semi-open impeller makes it suitable for: applications requiring the highest efficiency regardless of clogging fluids with moderate amounts of suspended solids while providing better efficiency than open impellers only low flow rate applications liquids with very high solid content b Comments Active
79 ________ is used for mixing oxygen and acetylene in gas welding processes. Earth clamp Welding torch Spark-lighter Goggles b Comments Active
80 If the degree of the shear force diagram is x, then the: degree of the loading curve is x degree of the loading curve is x + 1 degree of the bending moment diagram is x + 1 degree of the bending moment diagram is x − 1 c Comments Active
81 In the up-milling process, the metal is removed in the form of small chips by a cutter rotating _____. against the direction of the travel of the workpiece Metal will not be removed in the milling process. perpendicular to the direction of the travel of the workpiece in the same direction of the feed of the workpiece a Comments Active
82 Broaching is a _____ that uses a toothed tool to remove the material from the workpiece. grinding process machining process casting process boring process b Comments Active
83 Which of the following statements accurately describes vacuum pressure? It is the pressure due to the weight of a fluid column. It is the absolute pressure at any point in a fluid. It is the pressure exerted by the atmospheric air. It is the pressure below atmospheric pressure in a system d Comments Active
84 Which of the following can be used for angular measurements? Micrometer Slip Gauge Autocollimator Depth Gauge c Comments Active
85 How does indicated power differ from brake power in an internal combustion engine? Indicated power is derived from combustion chamber pressures, whereas brake power is the net output at the crankshaft after mechanical losses. Both indicated and brake power represent the same value under ideal conditions. Indicated power accounts for frictional losses, whereas brake power does not. Indicated power is measured at the engine’s output shaft, while brake power is measured in the cylinders. a Comments Active
86 Which of the following is generally used for melting metal in the metallic gun type of metal spraying process? Oxy acetylene flame Electric arc Plasma torch Compressed air a Comments Active
87 The flange of an I-section is 100 mm wide and 10 mm thick, and has moment of inertia If about its own centroidal axis parallel to flange length, in the plane of the flange. Its centroidal axis is 50 mm from the centroidal axis X-X of the I-section normal to the web in the plane of the I-section. Area moment of inertia of the flange about axis X-X is: 1.8333 mm4 If + 25 mm4 \(×10^{5}\) If + 50,000 mm4 If – 25 105 mm4 \(×\) b Comments Active
88 The purpose of scheduling in Production Planning and Control is to: ensure products are completed on time determine the cost of materials hire new personnel design new product layouts a Comments Active
89 What is the accuracy of the universal bevel protractor? 12-minute (12') 5-minute (5') 15-minute (15') 8-minute (8') b Comments Active
90 In a four-stroke diesel engine, the exhaust valve opens before the piston reaches the Bottom Dead Center to: reduce pumping losses        increase the compression ratio improve fuel atomisation enhance air-fuel mixing c Comments Active
91 IC engines are classified into carburetor engine and air injection engine based on the: number of cylinders speed of the engine cooling system used method of fuel injection d Comments Active
92 What type of abrasive is suitable for grinding glass and ceramic materials? Magnesium oxide Diamond Silicon carbide Copper boron nitride c Comments Active
93 When using a Venturi meter, a decrease in the cross-sectional area causes: an increase in fluid density no change in velocity an increase in static pressure a decrease in static pressure d Comments Active
94 EOQ stands for: Electronic Ordering Quantity Electrical Ordering Quantity Ensemble Ordering Quantity Economic Ordering Quantity d Comments Active
95 Name the part of a milling machine on which milling cutters are securely mounted and rotated. Front brace Arbor Saddle Overhanging arm b Comments Active
96 The thermal efficiency of the Otto cycle is a function of: compression ratio and the ratio of specific heats temperature and mass flow rate engine size and speed heat supplied and pressure ratio a Comments Active
97 What is the maximum angle that can be generally set using a sine bar? 90° 45° 75° 60 b Comments Active
98 At which location on a beam section will the maximum bending moment occur, concerning the shear force? Where shear force will be maximum Where shear force will be minimum Where shear force will change its sign Bending moment does not depend upon shear force. c Comments Active
99 हर्ज़बर्ग के द्वि-कारक सिद्धांत के अनुसार, निम्नलिखित में से कौन-सा 'स्वच्छता कारक (hygiene factor)' कार्य असंतुष्टि की ओर ले जाता है? मान्यता उत्तरदायित्व वेतन उपलब्धि c Comments Active
100 Blowholes are welding defects caused by _________________. unsuitable parent metals used in the weld poor edge preparation too great a heat concentration gas being trapped and due to moisture d Comments Active