Cork is a good insulator because it has___________________?

Related Mcqs:

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...

Temperature of steam at around 540°C can be measured by ____________________?

A. thermometer B. radiatiouv pyrometer C. thermistor D. thermocouple E. thermopile...

Film coefficient is defined as Inside diameter of tube________________?

A. Equivalent thickness of film B. Thermal conductivity Equivalent thickness of film Specific heat x Viscocity C. Thermal conductivity Molecular diffusivity of momentum Thermal diffusivity D. Film coefficient x Inside diameter Thermalconductivity E. none of the above...

A steam pipe is to be insulated by two insulating materials put over each other . For best results__________________?

A. better insulation should be put over pipe and better one over it B. inferior insulation should be put over pipe and better one over it C. both may be put in any order D. whether to put inferior OIL over pipe or the better one would depend on steam temperature E. unpredictable...

A grey body is one whose absorptivity _________________?

A. varies with temperature B. varies with the wave length of incident ray C. varies with both D. does not vary with temperature and wave length of the incident ray E. there is no such criterion...