Heat Transfer

A. I.C. engine
B. air preheaters
C. heating of building in winter
D. all of the above
E. none of the above

A. blast furnace
B. heating of building
C. cooling of parts in furnace
D. heat received by a person from fireplace
E. all of the above

Pick up the wrong case?
A. face area
B. time
C. thickness
D. temperature difference
E. thermal conductivity

A. conduction
B. convection
C. radiation
D. conduction and convection
E. convection and radiation

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

A. conduction
B. convection
C. radiation
D. scattering
E. convection and radiation

A. change vapour into liquid
B. change liquid into vapour
C. increase the temperature of a liquid of vapour
D. convert water into steam and superheat it
E. convert saturated steam into dry steam

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

A. conduction
B. convection
C. radiation
D. conduction and convection
E. convection and radiation

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