Unit of mass velocity is___________________?

Related Mcqs:

1. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a _______________ calorimeter ?

   A. Bomb
   B. Throttling
   C. Junker’s
   D. Boy’s

2. Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture ______________ calorimeter is not used for measuring the dryness fraction of steam?

   A. Bomb
   B. Separating
   C. Bucket
   D. Throttling

3. In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (ζ) and thermal diffusivity (α). The units of these quantities are ?

   A. μ , α and θ all have units of m/s
   B. μ , α and θ all have units of m2/s
   C. α and θ have units of m2/s, while μ has unit of m/s
   D. α and θ have units of m/s, while μ has unit of m2/s

4. The escape velocity of a body on earth which is independent of its mass is about ______________________ km/second?

   A. 3
   B. 7
   C. 11
   D. 15

5. Pick out the wrong unit conversion of mass transfer co-efficient?

   A. 1 lb/hr.ft3.atm. = 4.8182 kg/hr.m2.bar
   B. 1 kg/hr.m2.atm= 0.98687 kg/hr. m .bar
   C. 1 lb/hr.ft2 = 4.8823 kg/hr.m2
   D. 1 kg/hr.m2 = 4.8823 lb/hr.ft2

6. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?

   A. Mixing
   B. Adsorption
   C. Wetting
   D. Complete wetting

7. The unit of Cp in S.I. units is___________________?

   A. W/m2.°K
   B. J/kg.°K
   C. W/m.°K
   D. J/m3. °K

8. The unit of specific heat at constant pressure, Cp, in SI unit is__________________?

   A. W/m2°C
   B. J/kg°K
   C. W/m°K
   D. J/m3°K

9. Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?

   A. 1/9
   B. 8/9
   C. 1/2
   D. 5/9

10. The temperature of a gas in a closed container is 27° C. If the temperature of the gas is increased to 300° C, then the pressure exerted is___________________?

    A. Doubled
    B. Halved
    C. Trebled
    D. Unpredictable