Dittus-Boelter equation used for the determination o... - Solved MCQs & Answer

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ________ metre?

Ans: 0.1Read →

MCQ #1664

The Mach number for hypersonic flow of compressible fluid is________?

Ans: > 4Read →

MCQ #3752

Helium-mercury method is used for the measurement of the ________ of the catalyst?

Ans: Both B. & C.Read →

MCQ #5838

Glass reacts with________?

Ans: HFRead →