1000+ GATE Chemical Engineering Heat Transfer Questions & Answers Pdf - 2

Question: 6

Small scale evaporation is done in a

(A) heat exchanger

(B) steam jacketed kettle

(C) multiple effect evaporator

(D) condenser

Question: 7

The purpose of providing expansion bellows in the shell of tubular exchanger is to

(A) facilitate increase of shell length, if needed

(B) account for the uneven expansion of shell and tube bundles

(C) impact structural strength

(D) increase the heating load

Question: 8

Heat sensitive materials can be concentrated in an evaporator employing

(A) high pressure

(B) vacuum

(C) high residence time

(D) none of these

Question: 9

Heat transfer rate per unit area is called

(A) thermal diffusivity

(B) heat transfer coefficient

(C) heat flux

(D) thermal conductivity

Question: 10

Unsteady state heat conduction occurs, when

(A) three dimensional heat flow is concerned

(B) heat flows in one direction only

(C) temperature distribution is dependent on time

(D) temperature distribution is independent of time