Related Questions

Rankine efficiency of a steam power plant
A improves in summer as compared to that in winter
B improves in winter as compared to that in summer
C is unaffected by climatic conditions
D none of the above
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
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle
A Heat rejection is lower
B Expansion and compression are isentropic
C Combustion is at constant volume
D Maximum temperature is higher
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
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
When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
A Zero
B $$\frac{1}{5}$$
C $$\frac{4}{5}$$
D 1
When cut-off ratio is ________; the efficiency of Diesel cycle approaches to Otto cycle efficiency
A $$\frac{1}{4}$$
B Zero
C $$\frac{1}{5}$$
D 2
The efficiency of Diesel cycle approaches to Otto cycle efficiency when
A Cut-off is decreased
B Cut-off is constant
C Cut-off is increased
D Cut-off is zero
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
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

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