Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is ________________ mm?

Related Mcqs:

The leaching solvent used in Baeyer’s process for the purification of bauxite is___________________?

A. Ammonium hydroxide B. Sodium carbonate C. Sodium hydroxide D. Ammonium carbonate...

Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about___________________?

A. 1 B. 10 C. 25 D. 50...

Fahrenheit and Centigrade scales have the same readings at _____________________?

A. -55° B. -40° C. -33° D. -58°...

Wrought iron is not____________________?

A. Ductile & resistant to corrosion/rusting B. Weldable easily C. Having uniform strength in all directions D. Having maximum tensile strength along the lines of slag distribution...

Fibre glass is a composite material of_________________?

A. Glass fibre in a polymer matrix B. Glass fibre in a metallic matrix C. Polymer fibre in a glassy matrix D. Both ‘b’ & ‘c’...