Heat Transfer All analogy equations connecting friction factor and heat transfer co-efficient apply only to Form friction Wall or skin friction Both A and B Turbulent flow Form friction Wall or skin friction Both A and B Turbulent flow ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat waves Can be reflected by a mirror Travel in straight line Can not pass through vacuum Both B and C Can be reflected by a mirror Travel in straight line Can not pass through vacuum Both B and C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body) α 1/T Independent of T αT α T⁴ α 1/T Independent of T αT α T⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the unit of thermal conductivity ? Kcal/hr.m Kcal/hr. °C Kcal/hr.m.°C Kcal/hr. m² °C Kcal/hr.m Kcal/hr. °C Kcal/hr.m.°C Kcal/hr. m² °C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer Increases exponentially Decreases Remains unaffected Increases Increases exponentially Decreases Remains unaffected Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.95 1 0.78 0.95 1 0.78 ANSWER DOWNLOAD EXAMIANS APP
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