Thermal conductivity of solid metals with rise in temperature normally___________________?

Related Mcqs:

1. Thermal conductivity of water in general with rise in temperature ____________________?

   A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. none of the above...

2. Thermal conductivity of air with rise in temperature__________________?

   A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. none of the above...

3. Thermal conductivity of non-metallic amorphous solids with decrease in temperature __________________?

   A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. unpredictable...

4. Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of__________________?

   A. 0.002 B. 0.02 C. 0.01 D. 0.1 E. 0.5...

5. Unit of thermal conductivity in M.K.S. units is ___________________?

   A. kcal/kg m2 °C B. kcal-m/hr m2 °C C. kcal/hr m2 °C D. kcal-m/hr °C E. kcal-m/m2 °C...

6. Unit of thermal conductivity in S.I. units is__________________?

   A. J/m2 sec B. J/m °K sec C. W/m °K D. A. and C. above E. B. and C. above...

7. Thermal conductivity of water at 20°C is of the order of_____________________?

   A. 0.1 B. 0.23 C. 0.42 D. 0.51 E. 0.64...

8. Thermal conductivity of a material may be defined as the________________?

   A. quantity of heat flowing in one second through one cm cube of material when opposite faces ^re maintained at a temperature difference of 1°C B. quantity of heat flowing in one second through a slab of the material of area one cm square, thickness 1 cm when its faces differ in temperature by 1°C...

9. Thermal conductivity of glass-wool varies from sample to sample because of variation in ________________ ?

   A. composition B. density C. porosity D. structure E. all of the above...

10. Thermal conductivity of wood depends on_______________?

    A. moisture B. density C. temperature D. all of the above E. none of the above...