Chemical Engineering - Chemical Engineering Basics

16.
The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of __________ mm.
0.001
0.01
0.002
0.02
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
Steel balls are manufactured by
sintering
casting
cold heading
spinning
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
__________ temperature remains constant during adiabatic saturation process of unsaturated air.
Dew point
Dry bulb
Wet bulb
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
The best lubricants for a machine working at high temperature & load is
grease
solid lubricant
animal oils
mineral oils
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W . m-1 . k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is
100
900
9000
10000
Answer: Option
Explanation:
No answer description is available. Let's discuss.