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.Management Sciences
Category: Chemical Engineering Basics
As the fluid flow rate increases, the float of the Rotameter____________________?
A. Rises in the tube
B. Rotates at higher speed
C. Rotates at lower speed
D. Drops down in the tube
When the wavelength of incident X-rays increases, the angle of diffraction__________________?
A. Decreases
B. Increases
C. Remain constant
D. Shows no systematic variation
The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system_________________?
A. Is as light as possible
B. Has very high C.O.P.
C. Employs minimum quantity of refrigerant
D. Consumer minimum horse power
The mechanism involved in the removal of metal in drilling operation is by_________________?
A. Compression
B. Extrusion
C. Shearing
D. Both B & C
High endurance limit of carburised machine parts is because of the fact that carburisation __________________?
A. Suppresses any stress concentration produced in the parts
B. Enhances the yield point of the material
C. Introduces a compressive layer on the surface
D. Produces a better surface finish
. The effect of friction on the flow of steam through a nozzle is to decrease the _______________ of steam?
A. Wetness
B. Mass flow rate
C. Both A & B
D. Neither A nor B
The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?
A. Red
B. Extended
C. Super
D. Extreme
Pick out the wrong statement?
A. Copper is the metal having the highest electronic conductivity
B. Hardenability & Weldability of metals are inversely related
C. Covalent bonding formed by sharing of electrons is present in all semi-conductor materials
D. Glass transition temperature applies to ‘polymers’ but not to ‘glasses’
Maximum permissible sulphur content in steel is ______________ percent ?
A. 0.015
B. 0.055
C. 0.505
D. 0.805
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