Heat Transfer Set 1

different heat contents ✘ different specific heat ✘ different atomic structure ✘ different temperatures ✔ none of the above. ✔

increases ✘ decreases ✘ remains constant ✘ may increase or decrease depending on temperature ✔ none of the above. ✔

the time taken to attain the final temperature to be measured ✘ the time taken to attain 50% of the value of initial temperature difference ✘ the time taken to attain 63.2% of the value of initial temperature difference ✘ determined by the time taken to reach 100 ✔ none of the above. ✔

0.002 ✘ 0.02 ✘ 0.01 ✘ 0.1 ✔ 0.5. ✔

thermometer ✘ radiatiouv pyrometer ✘ thermistor ✘ thermocouple ✔ thermopile. ✔

kcal/kg m2 ✘ kcal-m/hr m2 ✘ kcal/hr m2 ✘ kcal-m/hr ✔ kcal-m/m2 ?C. ✔

J/m2 sec ✘ J/m ✘ W/m ✘ (a) and (c) above ✔ (b) and (c) above. ✔

increases ✘ decreases ✘ remains constant ✘ may increase or decrease depending on temperature ✔ unpredictable. ✔

increases ✘ decreases ✘ remains constant ✘ may increase or decrease depending on temperature ✔ unpredictable. ✔

zeroth law of thermodynamics ✘ first law of thermodynamic ✘ second law of the thermodynamics ✘ Kirchoff ✔