Steam Nozzles and Turbines MCQ with Answers

Steam Nozzles and Turbines MCQ with Answers

6) The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

Answer is:

remains constant

7) The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.

Answer is:

increases

8) The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and h_d = Enthalpy or heat drop during expansion of steam in a nozzle)

Answer is:

V = 44.72K h_d

9) In a nozzle, whole frictional loss is assumed to occur between

Answer is:

throat and exit

10) The critical pressure ratio for initially wet steam is

Answer is:

0.582