The specific volume of steam with increase in pressure decreases_____________________?

Related Mcqs:

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

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

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. The size of a boiler drum in pulverised fuel fired boiler,as its size and capacity, (steam pressure and flow ratings) increase __________________?

   A. increases
   B. decreases
   C. remains unchanged
   D. increases/decreases depending on steam temperature requirements
   E. unpredictable

4. If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton’s law, the pressure in condenser is equal to__________________?

   A. Ps-Pa
   B. pa-ps
   C. Pa+P
   D. non of these

5. The high pressure boiler is oiie producing steam at a pressure more than_________________?

   A. atmospheric pressure
   B. 5 kg/cm2
   C. 10 kg/cm2
   D. 40 kg/cm2
   E. 75-80 kg/cm2

6. 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

7. 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

8. 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__________________?

   A. 40%
   B. 25%
   C. 50%
   D. 80%
   E. 90%

9. 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

10. The specific fuel consumption for a petrol engine first decreases with increase in fuel air ratio and then increases with further increase in fuel air ratio. The minimum value occurs in the range of__________________?

    A. lean mixture
    B. chemically correct mixture
    C. rich mixture
    D. unpredictable
    E. none of the above