Related Questions

The blade friction in the impulse turbine reduces the velocity of steam by _____ while it passes over the blades.
A 10-15%
B 15-20%
C 20-30%
D 30-40%
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade.
A Equal to
B Less than
C Greater than
D None of these
The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.
A Same
B Less
C More
D None of these
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
A Velocity increases
B Velocity decreases
C Velocity remains constant
D Pressure remains constant
A pitched-blade turbine draws __________ a straight blade turbine.
A Less power than
B More power than
C Same power as
D Data insufficient to predict
A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion.
A 60°
B 90°
C 180°
D 270°
An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades.
A Equal
B Less
C More
D None of these
The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be
A 0.4
B 0.56
C 0.67
D 1.67
The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.
A Same
B Less
C More
D None of these
The expansion of steam, as it flows over the blades in reaction turbine, represents
A Isothermal process
B Isentropic process
C Throttling process
D Free expansion process

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