A. Wrought iron
B. Cast iron
C. Mild steel
D. High carbon steel
Materials and Construction
Materials and Construction
A. 95
B. 99.5
C. 85
D. 90
A. Do not resist corrosion
B. Resist corrosion very strongly
C. Are very brittle
D. Are heat insulators
A. Ductility
B. Toughness
C. Creep
D. Resilience
A. 1.5-2
B. 3.5-4.5
C. 7-9
D. 12-14
A. Chromium and molybdenum
B. Nickel and chromium
C. Molybdenum and nickel
D. Chromium and aluminium
A. High co-efficient of friction between journal and bearing
B. Ability to retain lubricant on its surface
C. Low co-efficient of friction between journal and bearing
D. Both B. & C.
A. Do not increase in plasticity with rise in temperature
B. Allow slip to occur between molecules
C. Do not take on a permanent set
D. None of these
A. Mild steel
B. Stainless steel
C. Carbides
D. High carbon steel
A. Calorising
B. Pack carburising
C. Nitriding
D. Cyaniding