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 increase in pressure in rotor blades to total increase in pressure in the stage is called
A Pressure ratio
B Pressure coefficient
C Degree of reaction
D Slip factor
Russia allowed whistle blower Edward Snowden temporary asylum on
A 15 August 2013
B 1 August 2013
C 31 December 2012
D 18 July 2013
In case of centrifugal fan or blower, the gas capacity varies as
A Speed
B (speed)2
C (speed)3
D (speed)0.5
The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will
A Increase
B Decrease
C Remain unchanged
D Increase/decrease depending on application
The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
A Increase
B Decrease
C Remain unchanged
D Increase/decrease depending on application
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
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
In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency.
A Manometric
B Mechanical
C Volumetric
D Overall
The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will
A Increase
B Decrease
C Be independent
D May increase or decrease depending on other factors

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