Chemical Engineering - Chemical Engineering Basics

21.
Factor of safety is the ratio of the __________ stress to the working stress.
tensile
compressive
yield
bearing
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
The majority charge carriers in p-type silicon are
free electrons
ions
conduction electrons
holes
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same
period increases.
period decreases.
group increases.
both 'b' & 'c'.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
supercharging
wall temperature
compression ratio
engine speed
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
Between 230 and 370°C, blue brittleness is caused in mild steel because of the
immobility of dislocation.
strain-ageing.
increase in Young's modulus.
strain hardening.
Answer: Option
Explanation:
No answer description is available. Let's discuss.