German silver is an alloy of copper, nickel and________________?

Related Mcqs:

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

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

2. 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) ?

   A. Invar
   B. Constantan
   C. Chromel
   D. Alumel

3. Percentage of silver in German silver is__________________?

   A. 5
   B. 10
   C. 20
   D. 0

4. 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

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

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

6. German silver in an alloy of________________?

   A. Copper, nickel and zinc
   B. Copper, aluminium and silver
   C. Silver, zinc and aluminium
   D. Silver, nickel and zinc

7. Addition of nickel to copper improves its_________________?

   A. Machinability
   B. Ductility
   C. Strength
   D. Hardness

8. Nickel and copper are the basic constituents of__________________?

   A. Hastelloy
   B. Monel metal
   C. German silver
   D. Inconel

9. 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

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

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