Correct answer
D. Decreases
Explanation
The correct answer is Decreases.
Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about ________ decibels?
Kinetic theory of gases stipulates that, the________?
The cooling medium used in dry quenching of coke is________?
COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about________?
Collapsible tubes for tooth paste are produced by ________ extrusion?
The reverse process of fractional crystallisation is called________?