Chemical Engineering - Chemical Engineering Basics

26.
Silicon percentage in the silicon steel used for electrical appliances/equipments is
0.3-0.4
12-14
3-4
20-25
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
Which of the following is not a dielectric material ?
Cotton, silk and paper.
Asbestos, glass, porcelain and mica.
Rubber and polymeric resins.
All refractory materials.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.
Magnetic permeability of iron is increased by its
decarburising.
alloying with cobalt.
purification.
alternate heating & cooling.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as
rigid
tough
ductile
plastic
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
Material of construction of foundary crucible is
lead
stainless steel
graphite
cast iron
Answer: Option
Explanation:
No answer description is available. Let's discuss.