IndiaBIX

Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 16
11.
The best criterion for analysing an economic investment is the
rate of return criterion.
present value method.
salvage value.
future value method.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Deformation band is absent in materials having __________ lattice crystal structure.
fcc
bcc
hcp
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Out of the following, the rays having the lowest wavelength is the
radio waves
ultrasonic waves
infra red rays
X-rays
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
A fine grained grinding wheel should not be used for grinding __________ materials.
hard
brittle
soft & ductile
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
What is the effect on the performance of the economiser in the thermal power plant boiler, if the feed water temperature is very low due to preheaters being out for repairs or starving of steam supply ?
It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water.
Economiser tube life increases due to handling of low temperature water.
Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases.
Scale formation rate on economiser tubes increases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers