ABSA 3B2 - Review UPDATED ACTUAL Questions and
CORRECT Answers
CHAPTER'S 1 2 & 3 - 14 questions chapter 1
on exam
199. In an impulse steam turbine d. 1, 2, 3, 4
nozzle, the following events take
place:
1) The steam pressure decreases
2) The enthalpy of the steam
decreases
3) The velocity of the steam
increases
4) The volume of the steam
increases
a. 1, 2, 4
b. 1, 3, 4
c. 2, 3, 4
d. 1, 2, 3, 4
e. 1, 2, 3
200. Turbine nozzles convert d. Kinetic energy
heat energy into:
a. Potential energy
b. Enthalpy
c. Eddy-currents
d. Kinetic energy
e. Pressure
,201. The purpose of the bucket c. kinetic, mechanical
or moving blade on the rotor is
to convert the _______ energy
of the steam into _____ energy:
a. heat, potential
b. kinetic, useful
c. kinetic, mechanical
d. heat, kinetic
e. mechanical, kinetic
2. In an impulse turbine as the a. velocity, pressure
steam passes through the
moving blades the ______ drops
but the ___ remains the same:
a. velocity, pressure
b. enthalpy, velocity
c. pressure, velocity
d. volume, velocity
e. velocity, kinetic energy
203. The pressure at the outlet d. an impulse
from the moving blades is the
same as the pressure at the inlet
to the moving blades in __________
turbine:
a. a topping
b. a reaction
c. a back-pressure
d. an impulse
e. an extraction
204. Steam turbine stationary c. 1, 4
nozzles serve to:
1) Decrease steam pressure
2) Increase steam enthalpy
3) Decrease steam friction
4) Increase steam velocity
a. 1, 2, 3
b. 1, 3, 4
c. 1, 4
d. 2, 3
e. 2, 3, 4
205. On an extraction turbine c. Maintained constant regardless of turbine load
the extraction pressure is:
a. Not critical
b. Varied according to turbine
load
c. Maintained constant
regardless of turbine load
d. Proportional to the turbine
load
e. Reduced if load increases
, 206. A back-pressure turbine d. Topping turbine
which exhaust steam to an old
boiler header still supplying
steam to an old boiler header
still supplying steam to an old
lower pressure turbine is called:
a. Condensing-bleeder turbine
b. Cross compound turbine
c. Condensing turbine
d. Topping turbine
e. Mixed pressure turbine
207. A topping turbine is a e. back-pressure
special application of a ________
turbine:
a. condensing
b. extraction
c. condensing-bleeder
d. tandem compound
e. back-pressure
208 _________ turbines are large b. Tandem-compound
turbines consisting of two or
more turbines in series coupled
together as one shaft and
applied to one generator:
a. Topping
b. Tandem-compound
c. Condensing-bleeder
d. Cross-compound
e. Mixed pressure
209. A generator coupled on d. Tandem-compound turbine
one shaft to a turbine consisting
of two or more turbine in series
is called:
a. Condensing-bleeder
b. Cross-compound turbine
c. Mixed pressure
d. Tandem-compound turbine
e. Topping
210 ____________ turbines are e. Cross-compound
large turbines with parallel
shafts with a generator on each
shaft:
a. Condensing
b. Tandem-compound
c. Extraction-bleeder
d. Condensing-bleeder
e. Cross-compound
CORRECT Answers
CHAPTER'S 1 2 & 3 - 14 questions chapter 1
on exam
199. In an impulse steam turbine d. 1, 2, 3, 4
nozzle, the following events take
place:
1) The steam pressure decreases
2) The enthalpy of the steam
decreases
3) The velocity of the steam
increases
4) The volume of the steam
increases
a. 1, 2, 4
b. 1, 3, 4
c. 2, 3, 4
d. 1, 2, 3, 4
e. 1, 2, 3
200. Turbine nozzles convert d. Kinetic energy
heat energy into:
a. Potential energy
b. Enthalpy
c. Eddy-currents
d. Kinetic energy
e. Pressure
,201. The purpose of the bucket c. kinetic, mechanical
or moving blade on the rotor is
to convert the _______ energy
of the steam into _____ energy:
a. heat, potential
b. kinetic, useful
c. kinetic, mechanical
d. heat, kinetic
e. mechanical, kinetic
2. In an impulse turbine as the a. velocity, pressure
steam passes through the
moving blades the ______ drops
but the ___ remains the same:
a. velocity, pressure
b. enthalpy, velocity
c. pressure, velocity
d. volume, velocity
e. velocity, kinetic energy
203. The pressure at the outlet d. an impulse
from the moving blades is the
same as the pressure at the inlet
to the moving blades in __________
turbine:
a. a topping
b. a reaction
c. a back-pressure
d. an impulse
e. an extraction
204. Steam turbine stationary c. 1, 4
nozzles serve to:
1) Decrease steam pressure
2) Increase steam enthalpy
3) Decrease steam friction
4) Increase steam velocity
a. 1, 2, 3
b. 1, 3, 4
c. 1, 4
d. 2, 3
e. 2, 3, 4
205. On an extraction turbine c. Maintained constant regardless of turbine load
the extraction pressure is:
a. Not critical
b. Varied according to turbine
load
c. Maintained constant
regardless of turbine load
d. Proportional to the turbine
load
e. Reduced if load increases
, 206. A back-pressure turbine d. Topping turbine
which exhaust steam to an old
boiler header still supplying
steam to an old boiler header
still supplying steam to an old
lower pressure turbine is called:
a. Condensing-bleeder turbine
b. Cross compound turbine
c. Condensing turbine
d. Topping turbine
e. Mixed pressure turbine
207. A topping turbine is a e. back-pressure
special application of a ________
turbine:
a. condensing
b. extraction
c. condensing-bleeder
d. tandem compound
e. back-pressure
208 _________ turbines are large b. Tandem-compound
turbines consisting of two or
more turbines in series coupled
together as one shaft and
applied to one generator:
a. Topping
b. Tandem-compound
c. Condensing-bleeder
d. Cross-compound
e. Mixed pressure
209. A generator coupled on d. Tandem-compound turbine
one shaft to a turbine consisting
of two or more turbine in series
is called:
a. Condensing-bleeder
b. Cross-compound turbine
c. Mixed pressure
d. Tandem-compound turbine
e. Topping
210 ____________ turbines are e. Cross-compound
large turbines with parallel
shafts with a generator on each
shaft:
a. Condensing
b. Tandem-compound
c. Extraction-bleeder
d. Condensing-bleeder
e. Cross-compound
