Related Questions

Reheat factor in steam turbines depends on
A exit pressure only
B stage efficiency only
C initial pressures and temperature only
D all of the above
Reheat cycle in steam power plant is used to
A utilise heat of flue gases
B increase thermal efficiency
C improve condenser performance
D reduce loss of heat
The pressure of reheat steam after passing through reheater compared to inlet condition is
A More
B Less
C Equal
D May be more or less depending on capacity of reheater
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
A A steam turbine develops higher speeds
B The efficiency of steam turbine is higher
C The steam consumption is less
D All of these
Steam turbines commonly used in steam power station are
A condensing type
B non-condensing type
C both (A) and (B)
D none of the above
Vacuum for reciprocating steam engines compared to steam turbines is
A More
B Equal
C Less
D Could be more or less depending on the size of plant
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 reheat factor is the ratio of the
A Cumulative heat drop to the isentropic heat drop
B Isentropic heat drop to the heat supplied
C Total useful heat drop to the total isentropic heat drop
D None of the above
The value of the reheat factor varies from
A 1.02 to 1.06
B 1.08 to 1.10
C 1.2 to 1.6
D 1.6 to 2
Reheat factor is the ratio of
A isentropic heat drop to useful heat drop
B adiabatic heat drop to isentropic heat drop
C cumulative actual enthalpy drop for the stages to total is isentropic enthalpy heat drop
D none of the above

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