Cermets are ______________ materials?
A. Refractory
B. Reinforced
C. Abrasive
D. Fully metallic
Materials and Construction
Molten phthalic anhydride is stored in a/an _______________ vessel?
Molten phthalic anhydride is stored in a/an _______________ vessel?
A. Aluminium
B. Nickel clad steel
C. Lead lined steel
D. Glass lined steel
18-4-1 high speed steel contains 18%, 4% and 1% respectively of____________________?
18-4-1 high speed steel contains 18%, 4% and 1% respectively of____________________?
A. Tungsten, vanadium and chromium
B. Tungsten, chromium and vanadium
C. Vanadium, chromium and tungsten
D. Chromium, tungsten and vanadium
Generally _____________ are subjected to galvanising (i.e., zinc coating)?
Generally _____________ are subjected to galvanising (i.e., zinc coating)?
A. Non-ferrous metals
B. Non-metals
C. Low carbon steels
D. Stainless steel
Which of the following is a light alloy ?
Which of the following is a light alloy ?
A. Monel metal
B. Dow metal
C. German silver
D. Babbitt metal
Which of the following is not a non-ferrous alloy ?
Which of the following is not a non-ferrous alloy ?
A. Meehanite
B. Magnalium
C. Gun metal
D. Muntz metal
Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of ______________ as mercury does not amalgamate with it?
Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of ______________ as mercury does not amalgamate with it?
A. Copper
B. Copper alloys
C. Stainless steel
D. Monel
100% H2SO4 at 30°C can’t be stored in a vessel made/lined with ___________________?
100% H2SO4 at 30°C can’t be stored in a vessel made/lined with ___________________?
A. Cast iron and high silicon iron
B. Mild steel and stainless steel
C. Aluminium, tin and rubber
D. Teflon, glass and porcelain
A bearing metal should not have___________________?
A bearing metal should not have___________________?
A. Enough plasticity
B. Low thermal conductivity
C. Low co-efficient of friction
D. High toughness
Galvanising (i.e., zinc coating) of steel sheets is done to______________________?
Galvanising (i.e., zinc coating) of steel sheets is done to______________________?
A. Prevent its rusting by contact with corrosive atmosphere
B. Protect the base metal by cathodic protection
C. Both A. & B.
D. Neither A. nor B.