Related Questions

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
In a reaction turbine, when steam flows through the fixed blades,
A Pressure increases while velocity decreases
B Pressure decreases while velocity increases
C Pressure and velocity both decreases
D Pressure and velocity both increases
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
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
Water flows into an empty 64-gallon drum through pipe A and flows out through pipe B. If the rate of flow through A is 2 gallons/hour, how many gallons per hour must flow out through pipe B so that the drum is full in exactly 96 hours?
A 3/8
B 1/2
C 2/3
D 4/3
A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as
A Back pressure turbine
B Pass out turbine
C Low pressure turbine
D Impulse turbine
The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.
A 10 to 15%
B 15 to 20%
C 20 to 30%
D 30 to 40%
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%
The ratio of the work-done on the blades per kg of steam to the total energy supplied per stage per kg of steam is called
A Blading efficiency
B Nozzle efficiency
C Stage efficiency
D Mechanical efficiency

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