Related Questions

Rankine cycle efficiency of a good steam power plant may be in the range of
A 15 to 20 per cent
B 35 to 45 per cent
C 70 to 80 per cent
D 90 to 95 per ceut
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 efficiency of a nuclear power plant in comparison to a conventional thermal power plant is
A Same
B More
C Less
D May be less or mote depending on size
The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that
A Carnot cycle can't work with saturated steam
B Heat is supplied to water at temperature below the maximum temperature of the cycle
C A Rankine cycle receives heat at two places
D Rankine cycle is hypothetical
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
Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha?
A 1.5:1
B 3.5:1
C 10:1
D 15:1
The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the
A Fuel cost per unit power generated is less
B Thermal efficiency of the former is higher
C Maintenance cost of the former is less
D None of these
Efficiency of Rankine cycle can be increased by
A Decreasing initial steam pressure and temperature
B Increasing exhaust pressure
C Decreasing exhausts pressure
D Increasing the expansion ratio
In a power plant if the maximum demand on the plant is equal to the plant capacity, then
A Plant reserve capacity will be zero
B Diversity factor will be unity
C Load factor will be unity
D Load factor will be nearly 60%
A single phase transformer has a maximum efficiency of 90% at full load and unity power factor. Efficiency at half load at the same power factor is -
A 87.8%
B 86.7%
C 88.26%
D 88.9%

Next steps