A neutral flame is obtained by supplying___________________?
A. more volume of acetylene and less volume of oxygen
B. equal volumes of oxygen and acetylene
C. more volume of oxygen and less volume of acetylene
D. none of the above
A file removes the metal during___________________?
A. both forward and return strokes
B. forward stroke
C. return stroke
D. none of these
A. progressive die
B. simple die
C. compound die
D. combination die
The cold working of metals is carried out_________________?
A. below the recrystallisation temperature
B. at the recrystallisation temperature
C. at any temperature
D. above the recrystallisation temperature
Lancing is the operation of _________________?
A. cutting a sheet of metal through part of its length and then bending the cut portion
B. removal of metal to the desired shape from the edge of a plate
C. cutting a sheet of metal in a straight line along the length
D. bending a sheet of metal along a curved axis
In spot welding, the spacing between two spot weld should not be less than _______________?
A. d
B. 1.5d
C. 3d
D. 6d