Related Questions

Photoelectric pyrometers are suitable in the temperature range of __________ °C.
A 400-1600
B 800-1600
C 800-2500
D 400-1000
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
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
All the thermocouples used for temperature measurement use dissimilar metal
A Strips
B Bars
C Wires
D Beads
Constantan an alloy used in thermocouples is an alloy of
A Copper and tin
B Copper and zinc
C Copper and iron
D Copper and nickel
__________ is not used as a material of construction in thermocouples.
A Alumel
B Rhodium
C Constantan
D Duralumin
Constantan used in thermocouples is an alloy of
A Iron & copper
B Copper & aluminium
C Lead & tin
D None of these
For platinum thermocouples, lead wires are made of
A Copper & copper-nickel alloys
B Copper & iron
C Iron & nickel
D Tin & nickel
Invar used in thermocouples is an alloy of nickel and
A Iron
B Copper
C Chromium
D Lead

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