Related Questions

একই পদার্থ ও ব্যাসার্ধের দুটি তারের দৈর্ঘ্যের অনুপাত 1:2 । যদি সমান বল দ্বারা তার দুটিকে টানা হয়, তাহলে তার দুটির বিকৃতির অনুপাত কত? (Two wires of same material and same radius have the ratio of length 1:2 . If you pull the wires with same force, what will be the ratio of their strains?)
A 1:2
B 4:1
C 2:1
D 1:4
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
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
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
Invar used in thermocouples is an alloy of nickel and
A Iron
B Copper
C Chromium
D Lead
Which of the following thermocouples has the widest temperature measurement range?
A Iron-constantan
B Chromel-alumel
C Copper-constantan
D Platinum-platinum/rhodium

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