Upto the critical radius of insulation, added insulation, will____________________?
A. Increase the heat loss
B. Decrease heat loss and will have no effect beyond that
C. Decrease heat flux
D. Reduce convection heat loss compared to conduction heat less
Which of the following is an ore dressing operation ?
A. Classification
B. Smelting
C. Roasting
D. None of these
Shampoos are commercially not available in the form of ___________________?
A. Powder
B. Gaseous mixture
C. Solution
D. Emulsion
In multipass welds, shot peening is done after each pass to__________________?
A. Close the surface porosity
B. Break the continuity of columnar grains
C. Flatten the weldment
D. Introduce texture in the weld
Pick out the correct combination about the role of various additives used in polymers ?
A. Plasticiser: increases the polymer strength
B. Heat stabiliser: increases the maximum service temperature
C. Fillers: Does not affect the property of polymer but increases its weight
D. Lubricants: increases the flexibility of polymers
Which of the following is not used as a bearing material ?
A. Copper-lead alloys
B. Babbitts
C. Bronzes
D. Cermets