A. allotropic change
B. recrystallisation
C. heat treatment
D. precipitation
E. austempering
Related Mcqs:
- A reversible change in the atomic structure of steel with corresponding change in the properties is known as___________________?
A. molecular change
B. physical change
C. allotropic change
D. solidus change
E. atomic change - The flow in which conditions do not change with time at any point, is known as_________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow - Machining properties of steel are improved by adding___________________?
A. sulphur, lead, phosphorous
B. silicon, aluminium, titanium
C. vanadium, aluminium
D. chromium, nickel
E. lubricants - The metallic structure of mild steel is_________________?
A. body centred cubic
B. face centred cubic
C. hexagonal close packed
D. cubic structure
E. orthorhombic crystal - The difference between the time available to do the job and the time required to do the job, is known as_________________?
A. event
B. float
C. duration
D. constraint
E. none of the above - The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as_________________?
A. meta center
B. center of pressure
C. center of buoyancy
D. center of gravity
E. none of the above - The flow which neglects changes in a transverse direction is known as_________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow - The ratio of absolute viscosity to mass density is known as_________________?
A. specific viscosity
B. viscosity index
C. kinematic viscosity
D. coefficient of viscosity
E. coefficient of compressibility - In petrol engines, the maximum power is developed corresponding to relative fuel air ratio of________________?
A. 0.85
B. 1
C. 1.1 to 1.3
D. 1.2 to 1.5 - Which is false statement about properties of aluminium ___________________?
A. modulus of elasticity is fairly low
B. wear resistance is very good
C. fatigue strength is not high
D. creep strength limits its use to fairly low temperatures
E. corrosion resistance is good
