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.Management Sciences
Category: Materials and Construction
Zircaloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium_______________?
A. Tin, nickel, iron and chromium
B. And graphite
C. And copper
D. None of these
German silver in an alloy of________________?
A. Copper, nickel and zinc
B. Copper, aluminium and silver
C. Silver, zinc and aluminium
D. Silver, nickel and zinc
Spray dryer for evaporating milk to produce milk powder is made of_________________?
A. Lead lined steel
B. Stainless steel
C. Aluminium
D. Cast iron
Condenser tubes are not made of_________________?
A. Cartridge brass
B. Muntz brass
C. Wood metal
D. Aluminium brass alloy
_____________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working?
A. Solid solution hardening
B. Screw dislocation
C. Strain ageing
D. Twinning
Liners of a ball mill are never made of__________________?
A. Lead
B. Alloy steel
C. Rubber or ceramic material
D. Cast iron
Vycor, a widely used material for making ‘thermal wells’ in temperature measurement, is a_______________?
A. Cermet
B. Glass
C. Thermosetting plastic
D. Metallic alloy
Hardest materials so far found is_________________?
A. Diamond
B. Graphite
C. Carborundum
D. Pumice stone
Chromel (Nichrome) is an alloy of_____________________?
A. Chromium and molybdenum
B. Nickel and chromium
C. Molybdenum and nickel
D. Chromium and aluminium
Carbon is present in steel wholly in the__________________?
A. Combined form
B. Free state as graphite
C. Both A. and B.
D. Neither A. nor B.
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