Related Questions

The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is
A 0.555
B 0.578
C 0.5457
D 0.6
The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is
A 0.6
B 0.578
C 0.555
D 0.5457
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.
A P, Q and R
B P and R
C R and S
D P, R and S
The isentropic expansion of steam through nozzle for the steam initially superheated at inlet is approximated by equation
A pvls=C
B pv1126 = C
C pv1A = C
D pv = C
The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation.
A pv = C
B pv1A = C
C pv1i = C
D pv
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
In steam turbines the reheat factor
A increases with the increase in number of stages
B decreases with the increase in number of stages
C remains same irrespective of number of stages
D none 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
When the inlet pressure of steam is equal to the exit pressure, then
A There is a pressure drop in the nozzle
B Fluid flows through the nozzle
C Pressure drops and fluid flows through the nozzle
D There is no pressure drop and fluid does not flow through the nozzle
In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of
A 10 atmospheres
B 20 atmospheres
C 30 atmospheres
D 40 atmospheres

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