The pressure at the furnace is minimum in case of___________?

Related Mcqs:

1. Rankine cycle operating on low pressure limit of p1 an 1 high pressure limit of p2__________?

   A. has higher the renal efficiency than the carnot cycle operating between same pressure limits
   B. has lower the”nal efficiency than carnot cycle operating between same pressure limit?
   C. has same thermal efficiency as carnot cycle operating between same pressure limits
   D. may be more or less depending upon the magnitude of p1 and p2

2. The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is___________?

   A. 0.6
   B. 0.578
   C. 0.555
   D. 0.5457

3. The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is__________?

   A. 0.555
   B. 0.578
   C. 0.5457
   D. 0.6

4. Which of the following generating station has minimum running cost?

   A. Nuclear
   B. Hydro
   C. Thermal
   D. Diesel

5. In case of impulse steam turbine_____________?

   A. there is enthalpy drop in fixed and moving blades
   B. there is enthalpy drop only in moving blades
   C. there is enthalpy drop in nozzles
   D. none of the above

6. The critical pressure ratio of a convergent nozzle is defined as_____________?

   A. the ratio of outlet pressure to inlet pressure of nozzle
   B. the ratio of inlet pressure to outlet pressure of nozzle
   C. the ratio of outlet pressure to inlet pressure only when mass flow rate per unit area is minimum
   D. the ratio of outlet pressure to inlet pressure only when mass flow rate = c

7. The effect of considering friction losses in steam nozzle for the same pressure ratio leads to________?

   A. increase in exit velocity from the nozzle
   B. decrease in exit velocity from the nozzle
   C. no change in exit velocity from the nozzle
   D. increase or decrease depending upon the exit quality of steam

8. The effect of considering friction in steam nozzles for the same pressure ratio leads to_________?

   A. increase in dryness fraction of exit steam
   B. decrease in dryness fraction of exit steam
   C. no change in the quality of exit steam
   D. decrease or increase of dryness fraction of exit steam depending upon inlet quality

9. The pressure on the two sides of the impulse wheel of a steam turbine_____?

   A. is same
   B. is different
   C. increases from one side to the other side
   D. decreases from one side to the other side

10. Steam pressure in a steam power station, which is usually kept now-a-days is of the order of____________?

    A. 20 kgf/cm2
    B. 50 kgf/cm2
    C. 100 kgf/cm2
    D. 150 kgf/cm2