Centrifugal pump is started with its delivery valve __________________?
A. Kept fully closed
B. Kept fully open
C. Irrespective of any position
D. Kept 50% open
For starting an axial flow pump, its delivery valve should be____________________?
A. Closed
B. Open
C. Depends on starting condition and flow desired
D. Could be either open or closed
Tandem drawing of wires and tubes is necessary because_________________?
A. Accuracy in dimensions is not possible otherwise
B. Surface finish improves after every drawing stage
C. It is not possible to reduce at one stage
D. Annealing is needed between stages
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
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
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