The tolerance produced by shell moulding process of casting is
Answer : Option B
When the dimension is expressed as `20_(- 0.025)^(+ 0.035)` , then the tolerance is
Answer : Option D
For gas welding, the pressure desired at the welding torch for oxygen is
The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.
Answer : Option A
For gas welding, the presure desired at the welding torch for acetylene is