The state of vapour under saturation condition is described by_______________?

Related Mcqs:

1. Heating of dry steam above saturation temperature is known as_____________________?

   A. enthalpy
   B. superheating
   C. supersaturation
   D. latent heat
   E. super tempering

2. The saturation temperature of steam with increase in pressure increases____________________?

   A. linearly
   B. rapidly first and then slowly
   C. slowly first and then rapidly
   D. inversely
   E. none of the above

3. A wet vapour can be completely specified by__________________?

   A. pressure only
   B. temperature only
   C. dryness fraction only
   D. specific volume only
   E. pressure and dryness fraction

4. Water boils when its vapour pressure ___________________?

   A. equals that of the surroundings
   B. equals 760 mm of mercury
   C. equals to atmospheric pressure
   D. equals the pressure of water in the container
   E. boiling has ^nothing to do with vapour pressure

5. The vapour pressure over the concave surface is______________________?

   A. less man the vapour pressure over the plane surface
   B. equal to the vapour pressure over the plane surface
   C. greater than the vapour pressure over the plane surface
   D. zero
   E. none of the above

6. On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by_______________?

   A. horizontal straight line
   B. vertical straight line
   C. straight inclined line
   D. curved line
   E. none of the above

7. Pick up the wrong statement about critical condition of steam___________________?

   A. latent heat is zero
   B. liquid directly becomes steam
   C. specific volume of steam and liquid is same
   D. this is the maximum pressure limit
   E. all properties of liquid and steam are same

8. 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

9. The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?

   A. more
   B. less
   C. equal
   D. may be more or less depending on capacity of reheater
   E. none of the above

10. The condition of steam in boiler drum is always ___________________?

    A. dry
    B. wet
    C. saturated
    D. supersaturated
    E. superheated