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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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9.38%(A)Epoxy resins ( 3 voters )
75%(B) Near-eutectic alloys ( 24 voters )
6.25%(C) Refractory alloys ( 2 voters )
9.38%(D) Large freezing range alloys ( 3 voters )
Based On 32 Votes

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13.85%(A)Gas Metal Arc Welding ( 9 voters )
70.77%(B)Electro Slag Welding ( 46 voters )
7.69%(C)Electron Beam Welding ( 5 voters )
7.69%(D)Laser Beam Welding ( 5 voters )
Based On 65 Votes

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13.79%(A) P > Q > R ( 4 voters )
62.07%(B) Q > R > P ( 18 voters )
10.34%(C) R > P > Q ( 3 voters )
13.79%(D) P > R > Q ( 4 voters )
Based On 29 Votes

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10.53%(A) Both [a] and [r] are true and [r] is the correct reason of [a]. ( 2 voters )
78.95%(B) Both [a] and [r] are true and [r] is not the correct reason of [a]. ( 15 voters )
10.53%(c) Both [a] and [r] are false. ( 2 voters )
0%(D) [a] is true but [r] is false.
Based On 19 Votes

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12.82%(A) Ultrasonic welding ( 5 voters )
10.26%(B) Friction welding ( 4 voters )
17.95%(C) Diffusion bonding ( 7 voters )
58.97%(D) Electroslag welding ( 23 voters )
Based On 39 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 ( 8 voters )
0%(D)both a and r are true, but r is not the reason for a
Based On 8 Votes

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60%(A) Gas tungsten arc welding ( 42 voters )
14.29%(B) Gas metal arc welding ( 10 voters )
22.86%(C) Submerged arc welding ( 16 voters )
2.86%(D) Flux cored arc welding ( 2 voters )
Based On 70 Votes

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57.14%(A) Reducing carbon content ( 8 voters )
7.14%(B) Increasing carbon content ( 1 voter )
28.57%(C) Eliminating strong carbide formers ( 4 voters )
7.14%(D) Decreasing chromium content ( 1 voter )
Based On 14 Votes

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50%(A) low contact angle with the base metal ( 5 voters )
40%(B) low density ( 4 voters )
10%(C) high surface tension ( 1 voter )
0%(D) high viscosity
Based On 10 Votes

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3.45%(A) Arc welding ( 3 voters )
10.34%(B) Gas welding ( 9 voters )
26.44%(C) Resistance welding ( 23 voters )
59.77%(D) Friction stir welding ( 52 voters )
Based On 87 Votes

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84%(A) Capillary infiltration ( 21 voters )
12%(B) Gravity infiltration ( 3 voters )
4%(C) Pressure infiltration ( 1 voter )
0%(D) Vacuum infiltration
Based On 25 Votes

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