The depth of hardness in steel can be increased by the addition of
A.Vanadium
B.Sulphur
C.Tungsten
D.Nickel
E.Chormium
Category: Metallurgy Mcqs
The upper range of mercury thermometer can be increased by
A.Increasing tube diameter
B.Providing steel tube
C.Taking into account expansion of tube
D.Filling the stem with nitrogen under pressure
E.Range cannot be increased
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
Which of the following material can bear sudden and excessive shocks better?
A.Cast iron
B.Pig iron
C.White iron
D.Wrought iron
E.All have same shock bearing capacity
The principle on which a disappearing filamment type pyrometer works is known as
A.Kirchhoff’s law
B.Fourier’s law
C.Wien’s law
D.Peltier effect
E.Seeback effect
Compressive strength is highest in case of
A.Cast iron
B.Wrought iron
C.Mild steel
D.Low carbon steel
E.High carbon steel
Nodular iron has low
A.Machinability
B.Tensile strength
C.Fluidity
D.Melting point
Which of the following is the softest material?
A.Corundum
B.Diamond
C.Calcite
D.Quartz
E.Fluorite
In a specimen of hardened steel, hard and soft spots indicate
A.Fre carbon
B.Uneven heating
C.Non-uniform composition of steel
D.Presence of pearlite
E.Presence of cementite
The effect of austenitic grain size development during heat treatment is
A.lower hardenability
B.greater toughness
C.lower internal stress
D.All of the above
