Lecture 7 : Tutorial Problem on Critical Insulation Thickness

[@tharaneshwar2242]

why do we not consider the L of the 2*pi*k*L of radial resistance while *34.20*

[@amruthasanthosh851]

Why contact resistance not taken to find q' in 3rd question

[@nehapatil4467]

In the second question of critical thickness, why aren't we using temperature in Kelvin? Everywhere else in the question temperature is taken in Kelvin!

[@venkateshbaki6011]

When we are taking the difference of temperatures, no matter which units you are taking difference always same.

[@vijaymourya1264]

how thickness of the insulation is 0.0175m

[@nehalansari735]

Yes sir how it possible

[@josephkj1910]

Thickness of insulation is Radius if insulation-Radius of cable= (0.02m-0.0025m)=0.0175m. It is basically the thickness of insulation material used. Since we consider Rc from centre of the cable we have to subtract the radius of cable from critical radius to obtain thickness of insulation

[@josephkj1910]

Just to add to that, dia of cable is given as 5mm hence radius is 2.5mm or 0.0025m

[@buatakun191]

@@josephkj1910 thank you for the explanation

[@ChemicalengineerVlogs]

@@josephkj1910 Tq bro