A composite wall consists of two plates A and B plac... - Solved MCQs & Answer

2721Chemical EngineeringMedium

A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when________?

ACPA > CPB

BkA >2 kB

CkA < 0.5 kB

Correct answer

C. kA < 0.5 kB

Explanation

The correct answer is kA < 0.5 kB.

Related Chemical Engineering MCQs

View all 8342 MCQs →

MCQ #2723

Cast iron has very high________?

Ans: Compressive strengthRead →

MCQ #2719

For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because________?

Ans: Water has a high latent heat of evaporationRead →

MCQ #2724

Atoms with same number of neutrons, but different number of nucleons are called________?

Ans: IsotonesRead →

MCQ #2718

Weber number is significant and is concerned with the________?

Ans: Dispersion of liquid in liquidRead →

MCQ #4806

Mixing of light fine powder such as insecticides is done by________?

Ans: Impact wheelsRead →

MCQ #6892

Pick out the wrong statement?

Ans: Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28Read →