In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is__________________?

Related Mcqs:

1. One kg of steam sample contains 0.8 kg dry steam; it’s dryness fraction is__________________?

   A. 0.2 B. 0.8 C. 1.0 D. 0.6 E. 0.5...

2. If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by___________________?

   A. throttling calorimeter B. separating calorimeter C. combined separating and throttling calorimeter D. bucket calorimeter E. none of the above...

3. Vacuum for reciprocating steam engines compared to steam turbines is__________________?

   A. more B. equal C. less D. could be more or less depending on the size of plant E. none of the above...

4. Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?

   A. desirable B. economical C. essential D. optional E. uneconomical...

5. The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is__________________?

   A. less B. more C. equal D. may be less or more depending on temperature E. unpredictable...

6. At which pressure the properties of water and steam become identical_________________?

   A. 0.1 kg/cm2 B. 1 kg/cm2 C. 100 kg/cm2 D. 225.6 kg/cm2 E. it is never possible...

7. Steam in water tube boiler as compared to fire tube boiler_________________?

   A. can be raised rapidly B. is raisd at slower rate C. is raised at same rate D. could be raised at fast/slow rate depending on design E. none of the above is true...

8. A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

   A. 0.5 B. 0.4 C. 0.515 D. 0.5 E. none of the above...

9. Bomb calorimeter is used to determine ___________________?

   A. Higher calorific value at constant volume B. Lower calorific value at constant volume , C. Higher calorific value at constant pressure D. Lower calorific value at constant pressure E. None of the above...

10. The value of mass density in kgsecVm4 for water at 0°C is_________________?

    A. 1 B. 1000 C. 100 D. 101.9 E. 91...