A. change vapour into liquid
B. change liquid into vapour
C. increase the temperature of a liquid or vapour
D. convert water into steam and superheat it
E. convert saturated steam into dry steam
Heat Transfer
Heat Transfer
A. increases
B. decreases
C. remains constant
D. may increase or decrease depending on temperature
E. none of the above
A. 0.002
B. 0.02
C. 0.01
D. 0.1
E. 0.5
A. free electrons
B. atoms colliding frequency
C. low density
D. porous body
E. all of the above
A. their atoms collide frequently
B. their atoms-are relatively far apart
C. they contain free electrons
D. they have high density
E. all of the above
A. thermometer
B. radiatiouv pyrometer
C. thermistor
D. thermocouple
E. thermopile
A. increases
B. decreases
C. remains constant
D. may increase or decrease depending on temperature
E. none of the above
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
