Related Questions

Constantan used in thermocouples is an alloy of
A Iron & copper
B Copper & aluminium
C Lead & tin
D None of these
Constantan is an alloy of
A Cu (55%) & Sn (45%)
B Cu (55%) & Ni (45%)
C Pt (95%) & Rh (10%)
D Fe (80%) & Ni (20%)
Invar used in thermocouples is an alloy of nickel and
A Iron
B Copper
C Chromium
D Lead
Constantan contains
A Silver and tin
B Copper and tungsten
C Tungsten and silver
D Copper and nickel
Thermocouples are mainly used for the measurement of
A Temperature
B Resistance
C Eddy currents
D Coupling co-efficient
In thermocouples which of the following pairs is commonly used ?
A Copper-constantan
B Aluminium-tin
C Silver-German silver
D Iron-steel
All the thermocouples used for temperature measurement use dissimilar metal
A Strips
B Bars
C Wires
D Beads
__________ is not used as a material of construction in thermocouples.
A Alumel
B Rhodium
C Constantan
D Duralumin
__________ is undesirable in thermocouples used in industries,
A Linear relation of emf to temperature
B Corrosion resistance
C Oxidation resistance
D Non-linear relation of emf to temperature
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.
A Steel
B Vycor (a glass)
C Nichrome
D Inconel

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