Related Questions

Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is
A 12
B 36
C 54
D 68
Invar used in thermocouples is an alloy of nickel and
A Iron
B Copper
C Chromium
D Lead
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is
A Silver metal
B Duralumin
C Hastelloy
D Invar
Invar contains the highest percentage of
A Vanadium
B Iron
C Tungsten
D Cobalt
Invar contains
A 12% of nickel
B 24% of nickel
C 30% of nickel
D 36% of nickel
Materials used for making permanent magnets containing iron and nickel are made by __________ technique.
A Powder metallurgy
B Casting
C Forging
D None of these
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
A 50 : 20 : 20 : 10
B 40 : 30 : 20 : 10
C 50 : 20 : 10 : 20
D 30 : 20 : 30 : 20
German silver is an alloy of copper, nickel and
A Zinc
B Silver
C Tin
D Lead
Which of the following is not a nickel based alloy?
A Inconel
B Hastelloys
C Nimonics
D Babbit metal
Which of the following is not an alloy of nickel and chromium?
A Inconel
B Hastealloy
C Nimonic alloys
D Duralumin

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