Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 17
1.
Yield strength of a material is determined by the __________ test.
A.
creep B.
tension C.
compression D.
endurance
Answer: Option B
Explanation:
2.
In fluid flow, and heat and mass transfer, one encounters (i ) kinematic velocity (μ), (ii ) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.
A.
μ , α and θ all have units of m/s. B.
μ , α and θ all have units of m2 /s. C.
α and θ have units of m2 /s, while μ has unit of m/s. D.
α and θ have units of m/s, while μ has unit of m2 /s.
Answer: Option C
Explanation:
3.
Window panes of aeroplanes are normally made of
A.
perspex (PMMA) B.
teflon (PTFE) C.
bakelite (phenol formaldehyde) D.
polystyrene
Answer: Option A
Explanation:
4.
__________ flux is used for the extraction of metal from its self fluxing ores.
Answer: Option A
Explanation:
5.
Good design of the casing of a centrifugal pump aims at minimising the
A.
cavitation B.
frictional losses C.
kinetic energy loss D.
static head
Answer: Option C
Explanation: