Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (1/20th of ordinary metals) ?

Related Mcqs:

1. The high expansion metal normally used in the bimetallic thermometer is _______________ temperature measurement?

   A. Brass for low
   B. Nickel alloys for high
   C. Both A. & B.
   D. Aluminium for all

2. A steel alloy containing 36% nickel is called _____________________, which has a zero co-efficient of expansion?

   A. Austenitic stainless steel
   B. Heat resisting steel
   C. Invar
   D. High speed steel

3. 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

4. An alloy of iron containing 4% carbon is called________________?

   A. High carbon steel
   B. Wrought iron
   C. Mild steel
   D. None of these

5. Which of the following is an alloy of nickel and copper ?

   A. Hastelloy
   B. Duriron
   C. Monel
   D. Inconel

6. Which of the following is not a nickel based alloy ?

   A. Inconel
   B. Hastelloys
   C. Nimonics
   D. Babbitt metal

7. Which of the following is not an alloy of nickel and chromium ?

   A. Inconel
   B. Hastelloy
   C. Nimonic alloys
   D. Duralumin

8. German silver is an alloy of copper, nickel and________________?

   A. Zinc
   B. Silver
   C. Tin
   D. Lead

9. An alloy used as thermocouple material comprises of 40% nickel and 60% copper. It is called____________________?

   A. Constantan
   B. Kanthal
   C. Chromel
   D. German silver

10. Invar used in thermocouples is an alloy of nickel and________________?

    A. Iron
    B. Copper
    C. Chromium
    D. Lead