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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 19
31.
A material is capable of resisting softening at high temperature, because of its property termed as
hot temper
hot hardness
fatigue
creep
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Cascade control is
the continuous adjustment of the set point index of an automatic control loop by a primary (master) controller.
used when changes in process conditions cause serious upsets in the controlled variable.
useful to control flow from temperature.
all 'a', 'b' & 'c'.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Softening of hardned steel is done by its
normalising
tempering
annealing
carburising
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
9:1
17 : 1
23 : 1
29 : 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Which of the following alloying elements is present in maximum percentage in high speed steel.
Molybdenum
Chromium
Tungsten
Vanadium
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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