Heating time with compressed air and petrol in SPW is ? (i) 4.0 to 4.5 minutes.* (ii) 4.0 to 5 minutes (iii) 5.0 to 5.5 minutes (iv) 5.5 to 6 minutes Answer : (i) 4.0 to 4.5 minutes.*...
What is the heating time in OXY & LPG in SPW? (i) 2.0 - 3.5 minutes. (ii) 2.0 - 3.0 minutes. (iii) 2.0 - 2.5 minutes.* (iv) 3.0 - 4.5 minutes. Answer : iii) 2.0 - 2.5 minutes...
What is the Shelf life of mould ? (i) 6 months minimum. (ii) 8 months minimum (iii) 9 months minimum* (iv) 12 months minimum Answer : (iii) 9 months minimum*...
What is the time of removal the tensor from the newly executed A T Weld? (i) 15 minutes after pouring. (ii) 20 minutes after pouring* (iii) 25 minutes after pouring. (iv) 30 minutes after pouring. Answer : (ii) 20 minutes after pouring*...
Main advantage of 3-piece P F Mould is? (i) To overcome fin defect.* (ii) To prevent the flaw of molten metal (iii) To make proper weld size (iv) None to the above Answer : (i) To overcome fin defect.*...
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