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The temperature profile (T in Kelvin) of an arc weld across its width is given as𝑇 = 2000 exp(−0.3𝑥2) where 𝑥 (in mm) is the distance from the weld centre. The melting point of the base material is 1500 K. ...Read more

The temperature profile (T in Kelvin) of an arc weld across its width is given as𝑇 = 2000 exp(−0.3𝑥2) where 𝑥 (in mm) is the distance from the weld centre. The melting point of the base material is 1500 K. The width of the fusion zone is  _________(in mm tO two decimal places).

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10.81%(A)Epoxy resins ( 4 voters )
75.68%(B) Near-eutectic alloys ( 28 voters )
5.41%(C) Refractory alloys ( 2 voters )
8.11%(D) Large freezing range alloys ( 3 voters )
Based On 37 Votes

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18.92%(A)Gas Metal Arc Welding ( 14 voters )
63.51%(B)Electro Slag Welding ( 47 voters )
9.46%(C)Electron Beam Welding ( 7 voters )
8.11%(D)Laser Beam Welding ( 6 voters )
Based On 74 Votes

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10.53%(A) P > Q > R ( 4 voters )
65.79%(B) Q > R > P ( 25 voters )
10.53%(C) R > P > Q ( 4 voters )
13.16%(D) P > R > Q ( 5 voters )
Based On 38 Votes

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9.09%(A) Both [a] and [r] are true and [r] is the correct reason of [a]. ( 2 voters )
81.82%(B) Both [a] and [r] are true and [r] is not the correct reason of [a]. ( 18 voters )
9.09%(c) Both [a] and [r] are false. ( 2 voters )
0%(D) [a] is true but [r] is false.
Based On 22 Votes

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12.73%(A) Ultrasonic welding ( 7 voters )
16.36%(B) Friction welding ( 9 voters )
18.18%(C) Diffusion bonding ( 10 voters )
52.73%(D) Electroslag welding ( 29 voters )
Based On 55 Votes

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0%(A) a is true but r is false
0%(B) a is false but r is true
100%(C) both a and r are true, and r is the reason for a ( 11 voters )
0%(D)both a and r are true, but r is not the reason for a
Based On 11 Votes

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64.1%(A) Gas tungsten arc welding ( 50 voters )
12.82%(B) Gas metal arc welding ( 10 voters )
20.51%(C) Submerged arc welding ( 16 voters )
2.56%(D) Flux cored arc welding ( 2 voters )
Based On 78 Votes

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60%(A) Reducing carbon content ( 9 voters )
6.67%(B) Increasing carbon content ( 1 voter )
26.67%(C) Eliminating strong carbide formers ( 4 voters )
6.67%(D) Decreasing chromium content ( 1 voter )
Based On 15 Votes

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68.75%(A) low contact angle with the base metal ( 11 voters )
25%(B) low density ( 4 voters )
6.25%(C) high surface tension ( 1 voter )
0%(D) high viscosity
Based On 16 Votes

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5.93%(A) Arc welding ( 7 voters )
7.63%(B) Gas welding ( 9 voters )
31.36%(C) Resistance welding ( 37 voters )
55.08%(D) Friction stir welding ( 65 voters )
Based On 118 Votes

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78.95%(A) Capillary infiltration ( 30 voters )
13.16%(B) Gravity infiltration ( 5 voters )
5.26%(C) Pressure infiltration ( 2 voters )
2.63%(D) Vacuum infiltration ( 1 voter )
Based On 38 Votes

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