A. hr (time)
B. sqm (area)
C. °C (temperature)
D. cm (thickness)
E. kcal (heat).
A. the time taken to attain the final temperature to be measured
B. the time taken to attain 50% of the value of initial temperature difference
C. the time taken to attain 63.2% of the value of initial temperature difference
D. determined by the time taken to reach 100°C from 0°C
E. none of the above
A. 0.1
B. 0.23
C. 0.42
D. 0.51
E. 0.64
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
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