Fkn ABSA 3B2 UPDATED ACTUAL Questions and
CORRECT Answers
If steam at high pressure high _________ expands through a stationary nozzle, the ____ of the
expands through a __________ steam drops and the______ of the steam increases.
nozzle, the pressure of the
steam ____ and the velocity of
the steam ______
The buckets converts the _____ the ___ converts the kinetic energy of the steam into mechanical
energy of the steam into _____ energy
energy
In a turbine, there are many In a turbine there are many ___ often referred to as buckets
blades often referred to as attached to the ____ and many ____ attached to the casing.
_ ____ attached to the rotor and
many nozzles attached to the
____
two disadvantage of this simple the extremely ____ centrifugal forces on the buckets, due to ____
impulse turbine are: rotational speeds and _____ friction losses due to ____ velocity
the extremely large ___ forces of the steam.
on the buckets, due to high ______
speeds and large ___ losses
due to high _ of the steam.
Convergent-Divergent Nozzle design
_ ______ design is used when
is used when ____ are required.
larger pressure drops are
required.
the pressure at the nozzle _______ the _____ at the nozzle throat (the
(the narrowest part of the narrowest part of the nozzle at the
nozzle at the outlet of the outlet of the convergent section
convergent section should be at should be at critical _______
_ ____ pressure.
, the pressure then continues to ____ in
The pressure then continues to
the divergent section of the nozzle.
drop in the ___ section of the
nozzle.
The increasing ___ of this the __________ area of this section
section accommodates the accommodates the ________ in steam
increase in the steam volume as volume as the________ drops.
the pressure __ _.
The_____increases across the entire
The velocity increases across nozzle.
the entire ___ _.
The Convergent-divergent The ____________ nozzle produces the required ______volume without
nozzle produces the required producing eddy currents.
steam ____ without producing
___________
Impulse Turbine Pressure Velocity
The velocity_____ sharply in the
Profile
_______, then drops in the _______
The _____ increases sharply in
The pressure _______ in the _____, then
the nozzles, then _____ in the
remains _____ through the blades.
blades.
The_____ drops in the nozzle then
remains constant through the ____ _.
Reaction Turbine Operating Priniciples
ya yeet
Reaction Causing Rotation
A reaction _______ has rows of _________
A _____ turbine has rows of
nozzles alternating with rows of ________
stationary ___ alternating with
blades.
rows of moving ____ _.
The ______ , due to their shape, The stationary blades, due to their
acts as nozzles. The_______ , with shape acts as _____ _. The moving
the same basic shape as the blades, with the same basic shape as
_ ___ , receive an impulse from the nozzles, receive an ____ from the
the steam but also produce a steam but also produces a reaction
__________ force.
Reaction Blade
CORRECT Answers
If steam at high pressure high _________ expands through a stationary nozzle, the ____ of the
expands through a __________ steam drops and the______ of the steam increases.
nozzle, the pressure of the
steam ____ and the velocity of
the steam ______
The buckets converts the _____ the ___ converts the kinetic energy of the steam into mechanical
energy of the steam into _____ energy
energy
In a turbine, there are many In a turbine there are many ___ often referred to as buckets
blades often referred to as attached to the ____ and many ____ attached to the casing.
_ ____ attached to the rotor and
many nozzles attached to the
____
two disadvantage of this simple the extremely ____ centrifugal forces on the buckets, due to ____
impulse turbine are: rotational speeds and _____ friction losses due to ____ velocity
the extremely large ___ forces of the steam.
on the buckets, due to high ______
speeds and large ___ losses
due to high _ of the steam.
Convergent-Divergent Nozzle design
_ ______ design is used when
is used when ____ are required.
larger pressure drops are
required.
the pressure at the nozzle _______ the _____ at the nozzle throat (the
(the narrowest part of the narrowest part of the nozzle at the
nozzle at the outlet of the outlet of the convergent section
convergent section should be at should be at critical _______
_ ____ pressure.
, the pressure then continues to ____ in
The pressure then continues to
the divergent section of the nozzle.
drop in the ___ section of the
nozzle.
The increasing ___ of this the __________ area of this section
section accommodates the accommodates the ________ in steam
increase in the steam volume as volume as the________ drops.
the pressure __ _.
The_____increases across the entire
The velocity increases across nozzle.
the entire ___ _.
The Convergent-divergent The ____________ nozzle produces the required ______volume without
nozzle produces the required producing eddy currents.
steam ____ without producing
___________
Impulse Turbine Pressure Velocity
The velocity_____ sharply in the
Profile
_______, then drops in the _______
The _____ increases sharply in
The pressure _______ in the _____, then
the nozzles, then _____ in the
remains _____ through the blades.
blades.
The_____ drops in the nozzle then
remains constant through the ____ _.
Reaction Turbine Operating Priniciples
ya yeet
Reaction Causing Rotation
A reaction _______ has rows of _________
A _____ turbine has rows of
nozzles alternating with rows of ________
stationary ___ alternating with
blades.
rows of moving ____ _.
The ______ , due to their shape, The stationary blades, due to their
acts as nozzles. The_______ , with shape acts as _____ _. The moving
the same basic shape as the blades, with the same basic shape as
_ ___ , receive an impulse from the nozzles, receive an ____ from the
the steam but also produce a steam but also produces a reaction
__________ force.
Reaction Blade
