3RD B2 PRACTICE EXAM QUESTIONS
AND ANSWERS. VERIFIED 2026.
In an impulse steam turbine nozzle, the following events take place - ANS 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
Turbine nozzles convert heat energy into: - ANS Kinetic Energy
The purpose of the bucket or moving blade on the rotor is to convert the ____________ energy
of the steam into ________ energy - ANS Kinetic into mechanical
In an impulse turbine as the steam passes through the moving blades the ________ drops but
the ______ remains the same. - ANS Velocity drops and pressure remains the same
The pressure at the outlet from the moving blades is the same as the pressure at the inlet to the
moving blades in __________ turbine. - ANS An impulse turbine
Steam turbine stationary nozzles serve to - ANS 1) Decrease steam pressure
4) Increase steam velocity
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,On an extraction turbine the extraction pressure is - ANS Maintained
Topping Turbine - ANS A back-pressure 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 topping turbine is an application of - ANS A back pressure turbine
Tandem Compound turbines - ANS Two or more large turbines on one shaft applied to one
generator
Cross Compound Turbines - ANS Are large turbines in parallel with one generator on each
shaft
In a steam turbine the steams absolute velocity does what in the fixed blades - ANS rises
In a steam turbine the steams absolute velocity does what in the moving blades -
ANS decreases
In a reaction turbine where does the pressure drop - ANS across the moving blades
An unbalanced axial thrust will develop on the rotar - ANS in a steam turbine with a pressure
drop across the moving blades
Reaction turbine blades (moving): - ANS 1) Convert the kinetic energy of the steam into
mechanical energy
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 2) Convert heat energy into kinetic energy
3) Are nozzle shaped
A reaction turbine results in a long machine due to a large number of alternate rows of -
ANS fixed and moving blades
Pressure-velocity compounded turbine - ANS A turbine that expands the steam in two or
more sets of nozzles in series, each set having velocity-compounded blades to receive the steam
issuing from the nozzles
In pressure compound steam turbine - ANS 1)The expansion of steam from boiler pressure to
exhaust pressure is carried out in a number of steps or stages
2)Each stage has a set of nozzles and a row of blades
4) The rows of moving blades are separated from each other by partitions or diaphragms into
which the nozzles are set
Velocity compounding in a steam turbine - ANS one of the nozzles expands the steam from
initial to exhaust pressure
In a condensing-bleeder turbine up to 20% of the total steam flow may be bled off. What is the
bleed-steam used for. - ANS feed water heating
A condensing-bleeder turbine can bleed up to ______ of the total steam flow. - ANS 0.2
The primary purpose of a back-pressure turbine is electrical generation - ANS false
In a back-pressure turbine the process steam pressure is - ANS Kept constant and the
generator output depends on the demand for process steam
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
AND ANSWERS. VERIFIED 2026.
In an impulse steam turbine nozzle, the following events take place - ANS 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
Turbine nozzles convert heat energy into: - ANS Kinetic Energy
The purpose of the bucket or moving blade on the rotor is to convert the ____________ energy
of the steam into ________ energy - ANS Kinetic into mechanical
In an impulse turbine as the steam passes through the moving blades the ________ drops but
the ______ remains the same. - ANS Velocity drops and pressure remains the same
The pressure at the outlet from the moving blades is the same as the pressure at the inlet to the
moving blades in __________ turbine. - ANS An impulse turbine
Steam turbine stationary nozzles serve to - ANS 1) Decrease steam pressure
4) Increase steam velocity
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,On an extraction turbine the extraction pressure is - ANS Maintained
Topping Turbine - ANS A back-pressure 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 topping turbine is an application of - ANS A back pressure turbine
Tandem Compound turbines - ANS Two or more large turbines on one shaft applied to one
generator
Cross Compound Turbines - ANS Are large turbines in parallel with one generator on each
shaft
In a steam turbine the steams absolute velocity does what in the fixed blades - ANS rises
In a steam turbine the steams absolute velocity does what in the moving blades -
ANS decreases
In a reaction turbine where does the pressure drop - ANS across the moving blades
An unbalanced axial thrust will develop on the rotar - ANS in a steam turbine with a pressure
drop across the moving blades
Reaction turbine blades (moving): - ANS 1) Convert the kinetic energy of the steam into
mechanical energy
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 2) Convert heat energy into kinetic energy
3) Are nozzle shaped
A reaction turbine results in a long machine due to a large number of alternate rows of -
ANS fixed and moving blades
Pressure-velocity compounded turbine - ANS A turbine that expands the steam in two or
more sets of nozzles in series, each set having velocity-compounded blades to receive the steam
issuing from the nozzles
In pressure compound steam turbine - ANS 1)The expansion of steam from boiler pressure to
exhaust pressure is carried out in a number of steps or stages
2)Each stage has a set of nozzles and a row of blades
4) The rows of moving blades are separated from each other by partitions or diaphragms into
which the nozzles are set
Velocity compounding in a steam turbine - ANS one of the nozzles expands the steam from
initial to exhaust pressure
In a condensing-bleeder turbine up to 20% of the total steam flow may be bled off. What is the
bleed-steam used for. - ANS feed water heating
A condensing-bleeder turbine can bleed up to ______ of the total steam flow. - ANS 0.2
The primary purpose of a back-pressure turbine is electrical generation - ANS false
In a back-pressure turbine the process steam pressure is - ANS Kept constant and the
generator output depends on the demand for process steam
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
