Steel recommended for induction hardening should have
A.Fine grains
B.Coarse grains
C.Low alloy content
D.Rough surface
E.Low electrical and thermal conductivity
A.Fine grains
B.Coarse grains
C.Low alloy content
D.Rough surface
E.Low electrical and thermal conductivity
A.Cast iron
B.Pig iron
C.White iron
D.Wrought iron
E.All have same shock bearing capacity
A.Kirchhoff’s law
B.Fourier’s law
C.Wien’s law
D.Peltier effect
E.Seeback effect
A.Cast iron
B.Wrought iron
C.Mild steel
D.Low carbon steel
E.High carbon steel
A.Machinability
B.Tensile strength
C.Fluidity
D.Melting point
A.Corundum
B.Diamond
C.Calcite
D.Quartz
E.Fluorite
A.Fre carbon
B.Uneven heating
C.Non-uniform composition of steel
D.Presence of pearlite
E.Presence of cementite
A.lower hardenability
B.greater toughness
C.lower internal stress
D.All of the above
A.Flakes
B.Needles
C.Powder
D.Spheroids
E.Prisms
A.Salt solution below a paint coat
B.Invisible moisture film present prior to painting
C.Graphite in the priming coat
D.Loose rust and partially removed mill scale
E.All of the above