The efficiency and work ratio of a gas turbine plant can be increased by

A Adding heat exchanger
B Injecting water in/around combustion chamber
C Reheating the air after partial expansion in the turbine
D All of the above

Correct Answer: All of the above

The efficiency and work ratio of a gas turbine plant can be increased by-Adding heat exchanger-Injecting water in/around combustion chamber-Reheating the air after partial expansion in the turbine
Bissoy MCQ
#Mechanical Engineering #Compressors #Gas Turbines And Jet Engines

Related Questions

There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would
A Remain same
B Decrease
C Increase
D None of the above
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
A Compression ratio
B Work ratio
C Pressure ratio
D None of these
A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine.
A Same
B Lower
C Higher
D None of these
The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio
A Increases
B Decreases
C First increases and then decreases
D First decreases and then increases
As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio
A Increases
B Decreases
C Remain same
D First increases and then decreases
The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is
A Low
B High
C Same
D Low/high depending on make and type
The work ratio of a gas turbine plant is defined as the ratio of
A Net work output and heat supplied
B Net work output and work done by turbine
C Actual heat drop and isentropic heat drop
D Net work output and isentropic heat drop
Work ratio of a gas turbine plant is ratio of
A Net work output and work done by turbine
B Net work output and heat supplied
C Work done by turbine and heat supplied
D Work done by turbine and net work output
The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)
A $${{\text{r}}^{\gamma - 1}}$$
B $$1 - {{\text{r}}^{\gamma - 1}}$$
C $$1 - {\left( {\frac{1}{{\text{r}}}} \right)^{\frac{\gamma }{{\gamma - 1}}}}$$
D $$1 - {\left( {\frac{1}{{\text{r}}}} \right)^{\frac{{\gamma - 1}}{\gamma }}}$$
The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)
A $${{\text{r}}^{\gamma - 1}}$$
B $$1 - {{\text{r}}^{\gamma - 1}}$$
C $$1 - {\left( {\frac{1}{{\text{r}}}} \right)^{\frac{{\gamma - 1}}{\gamma }}}$$
D $$1 - {\left( {\frac{1}{{\text{r}}}} \right)^{\frac{\gamma }{{\gamma - 1}}}}$$

Next steps