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S.No Question Option A Option B Option C Option D Answer Solution Comments Status Action
1 The 4 kg of hot water having the temperature of 85 °C is mixed with 2 kg of cold water at 22 °C. What is the final temperature of the mixed water? 58°C 47 °C 39 °C 64 °C Comments Active
2 The materials having same elastic properties in all directions are called Ideal materials Uniform materials Isotropic materials Elastic materials Comments Active
3 On a hole and shaft assembly the dimensions are as given below
Shaft: Hole: \(∅60^{\frac{-0.010}{-0.029}}\) \(∅60^{\frac{-0.035}{-0.000}}\)
What is the type of fit obtained?		 Clearance fit Transition fit Interference fit Shrink fit Comments Active
4 According to the law of gearing, with usual notations, which of the following is true? \(\frac{N_{1}}{N_{2}}=\frac{D_{1}}{D_{2}} =\frac{Z_{1}}{Z_{2}}\) \(\frac{N_{2}}{N_{1}} =\frac{D_{1}}{D_{2}} =\frac{Z_{1}}{Z_{2}}\) \(\frac{N_{1}}{N_{2}}=\frac{D_{2}}{D_{1}} =\frac{Z_{1}}{Z_{2}}\) \(\frac{N_{2}}{N_{1}} =\frac{D_{1}}{D_{2}}=\frac{Z_{2}}{Z_{1}}\) Comments Active
5 Find the centre and radius of the circle, 2x ^ 2 + 2y ^ 2 - x = 0 Centre and radius \((\frac{1}{4},\frac{1}{4})\) \(\frac{1}{4}\) Centre and radius \((\frac{1}{4}, 0)\) \(\frac{1}{4}\) Centre and radius \((\frac{1}{2}, 0)\) \(\frac{1}{4}\) Centre and radius \((\frac{1}{4}, 0)\) \(\frac{1}{16}\) Comments Active
6 If all the processing equipment and machines are arranged according to the sequence of operations of a product, the plant layout is known as Process layout Line layout Fixed position layout Combination layout Comments Active
7 The temper classification T6 in aluminium alloys refers to Solution heat treated Solution heat treated and naturally aged Solution heat treated and artificially aged Solution heat treated, cold worked and naturally aged Comments Active
8 Appropriate instrument to check the flatness of slip gauge is Dial indicator Pneumatic comparator Optical interferometer Tool maker’s microscope with projection facility Comments Active
9 In a regular cone, the angle between base and slanting surface is 45 degrees and the base diameter is 100 mm. If a helix is to be built on such a cone with a pitch of 5. How many revolutions do the helix made in this cone? 14.1 18 10 20 Comments Active
10 Point-to-point (P-T-P) control in CNC machine tool is applicable in case of Milling operation Turning operation Drilling operation All of the above Comments Active
11 A small element at the critical section of a component is in bi-axial state of stress with the two principal stresses being 360 MPa and 140 MPa. The maximum working stress according to distortion energy theory will be 220 MPa 110 MPa 314 MPa 400 Mpa Comments Active
12 The metric screw thread designated as M6 x 1 5g6h where 5g tolerance symbol controls the tolerance of Pitch diameter Major diameter Minor diameter All of the above Comments Active
13 Misrun is a casting defect which occurs due to Very high pouring temperature of the metal Insufficient fluidity of the molten metal Absorption of gases by liquid metal Improper alignment of mould flasks Comments Active
14 A penstock pipe of diameter 10m carries water under a pressure head of 100 m. If the wall thickness is 9 mm, what is the tensile stress in the pipe wall in MPa? 2725 545 272.5 1090 Comments Active
15 Large speed reductions [greater than 20] in one stage of a gear train are possible through Spur gearing Worm gearing Bevel gearing Helical gearing Comments Active
16 Determine the shaft diameter 'd' of a machine transmitting 200 W at 10 RPM. Assume allowable working stress as 300 MPa. \((64000/Ï€^{2})^{1/3} mm\) \((32000/Ï€^{2})^{1/3} mm\) \((16000/Ï€^{2})^{1/3} mm\) \((8000/Ï€^{3})^{1/3} mm\) Comments Active
17 The pressure of water in a pipe line was measured by means of simple manometer containing mercury. The mercury level in the open tube is 180 mm higher than that of the left tube. The height of water in the left tube is 60 mm. The static pressure acting on the pipe is 23.43 KN/m² 20.56 KN/m² 35.25 KN/m² 45.65 KN/m² Comments Active
18 In which of the following cases, net area of the shear force diagram is zero? Simply supported beam with concentrated load at center Cantilever beam with concentrated load at free end Simply supported beam with uniformly distributed load Both (a) and (c) Comments Active
19 For the given fluctuating fatigue load, the value of stress amplitude and stress ratio are
 100 MPa and 5 250 MPa and 5 100 MPa and 0.20 250 MPa and 0.20 Comments Active
20 If a liquid enters a pipe of diameter "d" with velocity "V" then what will be its velocity at the exit if the diameter of the pipe reduces to 0.5d? 0.5V 2V 4V V Comments Active
21 What is the pressure difference between inside and outside of a droplet of water? (where σ is the surface tension and d is the diameter of droplet) \(\frac{2σ}{d}\) \(\frac{4σ}{d}\) \(\frac{8σ}{. d}\) \(\frac{12σ}{d}\) Comments Active
22 The centre of gravity of the volume of the liquid displaced is called Centre of pressure Centre of buoyancy Metacentre None of the above Comments Active
23 If the temperature of a gas increases and the pressure remains constant, what happens to the volume of the gas? It stays the same It decreases proportionally to the temperature It increases proportionally to the temperature None of the above Comments Active
24 What is the approx. speed of the fighter jet in km/h if it is flying at mach 3? 411 1234 3704 11112 Comments Active
25 For the square matrix A of order , then \(3, |5 A|= X|A|\) \(X =\) 15 125 243 25 Comments Active
26 A large ball of string has a radius of 1 m. Find the total length of the string in the ball if the string cross section diameter is 4 mm and 40% of the volume can be considered unfilled to account for the gaps in the wound string in the ball. 150 km 300 km 600 km 200 km Comments Active
27 A concentrated load P acts on a simply supported beam of span L at a distance L/3 from the support. The bending moment at the point of application of the load is given by PL/3 2PL/3 PL/9 2PL/9 Comments Active
28 As shown in the figure, a mass of 100 kg is held between two springs. The natural frequency of vibration of the system in cycles /second is
 0.5 π 5/π 10/π 20/π Comments Active
29 The Reynold number for the flow of a fluid in horizontal circular tube of constant diameter is 1200. If the diameter of the tube and kinematic viscosity of the fluid are doubled and discharge at the exit is kept same then the new Reynolds number for the flow in the tube will be 4800 300 1200 600 Comments Active
30 Anemometer is used to measure Velocity Temperature Viscosity Density Comments Active
31 The velocity of water in a pipe of 40 mm diameter is 4 m/s. The length of the pipe is 1 m. What is the head loss due to friction in terms of m of water if Darcy's friction factor, f = 0.04? 0.82 m of water 3.26 m of water 1.63 m of water 1.32 m of water Comments Active
32 The symbol is used in the hydraulic system to represent Cooler Filter Heater Reservoir Comments Active
33 Pick the correct relationship from below for a simple harmonic motion. \(x=-ω^{2}x\) \(x = -x²ω\) \(x = ω^{2}x\) \( x^{2}= ω^{2}x\) Comments Active
34 For a compression helical spring, Wahl's correction factor (Kw) is given by (with c = d / D as spring index) \(Kw =\frac{4c - 2}{4c - 4}+\frac{0.615}{c}\) \(Kw =\frac{4c - 1}{4c + 1}+\frac{0.615}{c}\) \(Kw =\frac{4c - 1}{4c - 4} +\frac{0.615}{c}\) \(Kw =\frac{4c - 2}{4c + 4} +\frac{0.615}{c}\) Comments Active
35 At normal atmosphere pressure (760 mm of mercury) the gauge records a vacuum pressure of 35 KN/m². What is the absolute pressure in metres of water? 8.52 m of water 7.52 m of water 9.62 m of water 6.76 m of water Comments Active
36 If the object of mass 'm' slides down a frictionless curved surface of radius 'H' from rest and is projected horizontally at the bottom of the surface and further the object falls through a vertical height 'H' as shown in the figure. The horizontal range 'R' achieved by the object from its initial position is
 3H 2H H 4H Comments Active
37 Find the area of a triangle whose vertices are (-3,4), (3,-2) and (3,5) 15 42 21 33 Comments Active
38 What is the range of wavelengths that belong to the visible region in the electromagnetic spectrum? 400-700 nm 1000-2500 nm 10-300 nm 5000-10000 nm Comments Active
39 9.81 The shear stress developed in a lubricating oil, of viscosity 9.81 poise, filled between 2 parallel plates 10 cm apart and moving with relative velocity of 2 m/s is 39.2 N/m² 19.6 N/m² 9.8 N/m² 50 N/m² Comments Active
40 If the diameter of wire stretched by a load is doubled, then its Young's modulus will be doubled four times one-fourth remains unaffected Comments Active
41 Which of the following geometric dimensioning symbol indicates flatness? Comments Active
42 For a single start M24 × 3 bolt the lead is 3 mm 1.5 mm 24 mm 8 mm Comments Active
43 Find \(\frac{e^{tan^{-1}x}}{1+x^{2}} dx\) \(e^{sec(x)}+C\) \(e^{(\frac{1}{1-x^{2}})} +C\) \(e^{(1+x^{2})} + C\) \(e^{tan^{-1}x} + C\) Comments Active
44 With increasing temperature of intake air, IC engine efficiency Decreases Increases Remains same Depends on other factors Comments Active
45 Find the order and degree of the following equation
\((\frac{d^{2}y}{dx^{2}})^{2}+(\frac{dy}{dx})^{3}+sin(\frac{dy}{dx})+1=0\)		 3,2 2,3 3,3 2,2 Comments Active
46 The COP of a carnot pump operating between 6°C and 37°C is 10 5 20 2 Comments Active
47 If the major and minor principal stresses acting on a body are 100 MPa and -60 MPa respectively, then the maximum shear stress will be equal to? 20 MPa 40 MPa 80 MPa 160 MPa Comments Active
48 A company has a demand of 12000 units in a year. The storage cost of one unit for a month is 20% of the unit cost. The set up cost for one run is Rs. 120 and the unit cost is Rs. 120. What is the optimal number of orders to meet the yearly demand? 100 200 120 240 Comments Active
49 The natural frequency of a spring mass system on earth is . The natural frequency of this system on the moon is [] is \(ω_{n}\) \(g_{moon}=g_{earth}/6\) \( ω_{n}\) 0.408 \(ω_{n}\) 0.204 \(ω_{n}\) 0.167 \(ω_{n}\) Comments Active
50 In order to test the efficiency of reducer gear train 1 KW input was given at the input end at a speed of 1440 rpm and at the output end the measured torque was 56.36 Nm. If the ratio of speed reduction in this unit is 10: 1, the efficiency is about 78% 85% 63% 96% Comments Active
51 The purpose of copper coating of carbon steel wires in submerged arc welding is to Add copper to the weld Prevent hot cracking Prevent rusting of the wire Provide cooling for the torch Comments Active
52 What is the percentage of Carbon at the Eutectic point in Iron Carbon diagram? 0.76 2.14 4.30 5.56 Comments Active
53 For a floating body in a stable equilibrium, under the influence of gravity alone, which of the following is true? Metacentre should be below CG Metacentre should be above CG Metacentre and CG must lie on the same horizontal line Metacentre and CG must coincide Comments Active
54 If the number of teeth on the wheel rotating at 600 rpm is 90, then the number of teeth on the mating pinion rotating at 1200 rpm is 45 18 20 60 Comments Active
55 Materials subjected to rolling operations should be Ductile Ferrous Malleable None of the above Comments Active
56 In a multiple disc clutch, if are the number of discs on the driving shaft and are the number of discs on the driven shaft, then the number of pairs of contact surfaces will be \(n_{1}\) \(n_{2}\) \(n_{1}+n_{2}\) \((n_{1}+ n_{2})-1\) \((n_{1}+ n_{2})+1\) \((n_{1}+n_{2})/2\) Comments Active
57 What is the maximum slope of a simply supported beam with uniformly distributed load of magnitude 'w' N/m? \(\frac{wI^{3}}{24EI}\) \(\frac{wl^{3}}{48EI}\) \(\frac{wl^{3}}{2EI}\) \(\frac{wl^{3}}{6EI}\) Comments Active
58 A condenser of a refrigeration system rejects heat at a rate of 90 KW, while the compressor consumes a power of 30 KW. The coefficient of performance of the system would be 1/2 3 1/3 2 Comments Active
59 A boiler shell 400 mm diameter and plate thickness 15 mm is subjected to internal pressure of , then the hoop stress will be \(15 MPa\) 30 MPa 50 MPa 100 MPa 200 MPa Comments Active
60 A particle's position in the axis with respect to time is given by , ( in meters and in seconds). The time at which the particle velocity is zero is \(x\) \('t'\) \(x=4-27t+3t^{3}\) \(x\) \(t\) 1 s 3 s O s 1.732 s Comments Active
61 The combination of slip gauges to obtain a dimension of 10.35 mm will be 10.00 + 0.30 + 0.05 8.00 + 1.30 + 1.05 10.00 + 0.35 5.00 + 4.00 + 1.00 + 0.35 Comments Active
62 The purpose of supercharging an IC engine is To decrease the noise To decrease specific fuel consumption To decrease cooling of cylinders To increase power output of engines Comments Active
63 Young's Modulus of a material is 260 GPa and Poisson's ratio is 0.3. Values of bulk modulus and rigidity modulus are? 150.1 GPa and 100 GPa 216.7 GPa and 100 GPa 216.7 GPa and 80.4 GPa 170.7 GPa and 85.3 GPa Comments Active
64 Consider two helical compression springs A and B with their stiffness . When both of them are subjected to the same load then which spring stores more strain energy? \(K_{A} > K_{B}\) A B Both store same energy Insufficient information Comments Active
65 A simply supported beam is subjected to a concentrated load at the center of span and in another case the same load is uniformly distributed over its entire span. If maximum bending stress generated in the beam in both cases are and respectively, then which of the following is correct? \(σ_{A}\) \(σ_{B}\) = 0.25 \(σ_{A}\) \(σ_{B}\) = 0.50 \(σ_{A}\) \(σ_{B}\) = 2.00 \(σ_{A}\) \(σ_{B}\) = 1.00 \(σ_{A}\) \(σ_{B}\) Comments Active
66 Locus of a point P, equidistant from two fixed points A and B, is An ellipse A line perpendicular to AB passing through the midpoint of AB A circle with AB as largest chord A parallel line of AB Comments Active
67 For a Platinum RTD the resistance at 0°C is 100 Ω and resistance at 100°C is 138.5 Ω. What is its coefficient of resistance at 100°C. 0.00385/°C 38.5/°C 0.001385/°C 1.385/°C Comments Active
68 Which of the statistical process control chart is used for measuring the quality characteristics of a product? P Chart C Chart U Chart R Chart Comments Active
69 The observed time for an operation of turning a shaft is 5 minutes. If the performance rating is 130% and allowances are 10% of the normal time, then what is the standard time for this job? 7.15 minutes 5.85 minutes 3.85 minutes 6.5 minutes Comments Active
70 Find \(limx→1\frac{x^{8}-1}{x^{4}-1}\) 1 0 \(\frac{1}{2}\) 2 Comments Active
71 The size of the weld in butt welded joint is equal to 0.5 × Throat of weld Throat of weld Throat of weld \(2×\) Throat of weld \(2×\) Comments Active
72 Air refrigerator works on Bell-Coleman cycle Rankine cycle Carnot cycle Both (a) and (b) Comments Active
73 Which of the following is correct with respect to the bending moment and shear force of a beam? \(V=dM/dx\) \(M=dV/dx\) \(V=M.x\) \(M=Vx\) Comments Active
74 What is the most suitable cross-section choice among the following when a cantilever beam subjected to pure bending has to be made of cast iron? Rectangular Circular T section Square Comments Active
75 Consider a steel bar at a temperature of 25°C shown in the below figure. Up to what temperature is the bar stress free? Assume that initial length, L=1 m, Coefficient of thermal expansion . \(=10 × 10^{-6}/°C\)
 70°C 50°C 60°C 80°C Comments Active
76 The positions of reference line and top view in 3rd angle projection are? Reference line lies above the top view Reference line lies below the top view Reference line lie left side to top view Reference line right side to top view Comments Active
77 The wavelength of laser is \(CO_{2}\) 1064 nanometer 10.60 micrometer 1.064 nanometer 0.1064 micrometer Comments Active
78 Which of the following bearings has least capability for withstanding thrust load? Deep groove ball bearing Angular contact bearing Taper roller bearing Cylindrical roller bearing Comments Active
79 A manufacturing firm incurs a fixed cost of Rs. 30,000. The variable cost is Rs. 10 per unit and selling price is Rs. 25. Determine the number of products to be produced so that the market price is just equal to the original cost of the product. 3000 2000 857 1200 Comments Active
80 Find the equation of the curve passing through the point (-2,3), given that the slope of the tangent to the curve at any point (x, y) is . \(\frac{2x}{y^{2}}\) \(y^{3}+ x^{2}-23 = 0\) \(y^{3}- 3x^{2}-15 = 0\) \(y^{3}-x^{2} + 5 = 0\) \(y^{3}- 3x^{2}- 1 = 0\) Comments Active