CS/B.Tech/PWE(NEW)/SEM-6/PWE-602/2013
2013
STEAM TURBINE AND ITS AUXILIARIES
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct alternatives for the following :
10x1 = 10
i) Mixing up of CW water with DM water
a) increases pH value of the water
b) decreases turbidity of the water
c) decreases pH value of the water
d) Increases turbidity of the water.
ii) Stage of a turbine means
a) one set of nozzles and two set of blades
b) one set of nozzles and one set of blades
c) one set of blades
d) none of these.
iii) Two row pressure compounded impulse turbine is
known as
a) DE-LAVAL turbine
b) Rateau staged turbine
c) Curtis staged turbine
d) none of these.
iv) Barring gear is used to
a) rotate the turbine at low speed before start up or
after shut down
b) facilitate uniform heating or cooling
c) avoid sagging or hogging in a rotor
d) all of these.
v) Vacuum in a condenser is created by
a) Ejectors
b) Condensate extraction pump
c) Condensation of steam
d) all of these.