InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Inquestionnumber 3, the thermalconductivity(in W m^(-1) K^(-1)) if air is |
| Answer» <html><body><p>`1/<a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a>`<br/>`1/12`<br/>`1/14`<br/>`9/130`</p>Solution :The temperature difference across the plate. <br/> `DeltaT_("plate") = ((dQ)/<a href="https://interviewquestions.tuteehub.com/tag/dt-960413" style="font-weight:bold;" target="_blank" title="Click to know more about DT">DT</a>)xx (l_("plate"))/(K_("plate") xx A) = (65 xx 4 xx 10^(-<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>))/(1 xx 1.3) = 0.2 K` <br/> `:. DeltaT_("air") = 13 - 2DeltaT_("plate") = 12.6 K` <br/> `K_("air") = (((dQ)/(dt))xxl_("air"))/(ADeltaT_("air")) = (65 xx <a href="https://interviewquestions.tuteehub.com/tag/18-278913" style="font-weight:bold;" target="_blank" title="Click to know more about 18">18</a> xx 10^(-3))/(1.3 xx 12.6) = 1/14 W m^(-1) K^(-1)`</body></html> | |