Related Questions

Which of the following is insensitive to changes in pressure?
A Heat of vaporisation
B Melting point
C Heat of fusion
D Both B & C
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a
A Magnetic flowmeter
B Pitot tube
C Flow nozzle type flowmeter
D Turbine flowmeter
Media type names are case-insensitive. State true or false.
A True
B False
An orthotropic material is a special class of anisotropic material, which is described by their properties in three perpendicular directions. An example of orthotropic material is
A Stainless steel
B Cast iron
C Wood
D Teflon
Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.
A 75
B > 30
C 50
Which of the following exercises most powerful influence on the mechanical properties of steel?
A Manganese
B Carbon
C Phosphorous
D Silicon
Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its
A Easier grindability
B Poor grindability
C High power consumption in grinding
D None of these
_______ is extensively used for those portions of magnetic circuit which carry steady flux and need superior mechanical properties ?
A Grey cast-iron
B Cast steel
C High carbon steel
D Stainless steel
Depending on the chemical composition and mechanical properties, iron may be classified as
A Cast iron
B Wrought iron
C Steel
D All the above
Improvement in mechanical properties of metals in its hot working is due to the grains
A Recrystallisation
B Refinement
C Growth
D Recovery

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