Reynold’s analogy states that_________________?
Reynold’s analogy states that_________________?
A. Nst α f
B. Nst α NRe
C. NNu α f
D. NRe α f
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In SI units, thermal conductivity is expressed in__________________?
In SI units, thermal conductivity is expressed in__________________?A. Watt/m.°K
B. Watt/m2. °K
C. Watt/m2. °K
D. Watt/m4. °KThe heat flux (from outside to inside) across an insulating wall with thermal conductivity, K = 0.04 W/m.°K and thickness 0.16m is 10 W/m2. The temperature of the inside wall is – 5°C. The outside wall temperature is___________________?
The heat flux (from outside to inside) across an insulating wall with thermal conductivity, K = 0.04 W/m.°K and thickness 0.16m is 10 W/m2. The temperature of the inside wall is – 5°C. The outside wall temperature is___________________?A. 25°C
B. 30°C
C. 35°C
D. 40°CA multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?
A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?A. 6000
B. 24000
C. 60000
D. 48000Which has the lowest Prandtl number ?
Which has the lowest Prandtl number ?A. Liquid metal
B. Aqueous solution
C. Water
D. Lube oilThe statement that “maximum wavelength of radiation is inversely proportional to the temperature” is ______________ law?
The statement that “maximum wavelength of radiation is inversely proportional to the temperature” is ______________ law?A. Stefan-Boltzmann’s
B. Planck’s
C. Wien’s displacement
D. None of theseHeat exchanger tubes are never made of_________________?
Heat exchanger tubes are never made of_________________?A. Plain carbon steel
B. Stainless steel
C. Lead
D. Copper