A. Iron
B. Copper
C. Chromium
D. Lead
Invar used in thermocouples is an alloy of nickel and________________? Read More »
Materials and Construction A. Shafts
B. Flanges
C. Gears
D. Shear blades
A. Malleable
B. Ductile
C. Brittle
D. None of these
A. Non-crystalline solid
B. Crystalline
C. Rubbery
D. Non-crystalline organic polymeric
A. Constantan
B. Kanthal
C. Chromel
D. German silver
A. Cu (55%) & Sn (45%)
B. Cu (55%) & Ni (45%)
C. Pt (95%) & Rh (10%)
D. Fe (80%) & Ni (20%)
Constantan is an alloy of____________________? Read More »
Materials and Construction A. Brittle
B. Hard
C. Rollable
D. Soft
Tempering of steel is done to make it________________? Read More »
Materials and Construction A. Wrought iron
B. Cast iron
C. Mild steel
D. High carbon steel
Which of the following has the highest compressive strength ? Read More »
Materials and Construction A. 95
B. 99.5
C. 85
D. 90
Purity of electrical grade aluminium should be ≥ _____________ percent? Read More »
Materials and Construction A. Do not resist corrosion
B. Resist corrosion very strongly
C. Are very brittle
D. Are heat insulators
