In gas turbines, high thermal efficiency is obtained in
In gas turbines, high thermal efficiency is obtained in
The ratio of isentropic work to Euler’s work is known as
The ratio of isentropic work to Euler’s work is known as
The mean effective pressure of the compressor is the
The mean effective pressure of the compressor is the
The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)
The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)
Ratio of indicated H.P. and brake H.P. is known as
Ratio of indicated H.P. and brake H.P. is known as
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of
The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the
The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the
The indicated work per unit mass of air delivered is
The indicated work per unit mass of air delivered is
Isothermal compression though most efficient, but is not practicable because
Isothermal compression though most efficient, but is not practicable because
A turboprop is preferred to turbojet because
A turboprop is preferred to turbojet because
In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in
In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in
After-cooler is used to
After-cooler is used to
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be
The volume of air sucked by the compressor during its suction stroke is called
The volume of air sucked by the compressor during its suction stroke is called
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is
The volume of air delivered in a medium capacity air compressor per unit time is
The volume of air delivered in a medium capacity air compressor per unit time is
To avoid moisture troubles, the compressed air main line should
To avoid moisture troubles, the compressed air main line should
The thermal efficiency of a gas turbine as compared to a diesel plant is
The thermal efficiency of a gas turbine as compared to a diesel plant is
A closed cycle gas turbine works on
A closed cycle gas turbine works on
A machine used to raise the pressure of air is called
A machine used to raise the pressure of air is called
Which of the following plants is smallest and lightest for generating a given amount of power?
Which of the following plants is smallest and lightest for generating a given amount of power?
The overall isothermal efficiency of the compressor is defined as the ratio of
The overall isothermal efficiency of the compressor is defined as the ratio of
Only rocket engines can be propelled to space because
Only rocket engines can be propelled to space because
Water gas is produced by
Water gas is produced by
The gas in cooling chamber of a closed cycle gas turbine is cooled at
The gas in cooling chamber of a closed cycle gas turbine is cooled at
The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is
The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is
Choose the correct statement
Choose the correct statement
The air power of the compressor is also known as
The air power of the compressor is also known as
Standard air is the air at
Standard air is the air at
Gas turbines for power generation are normally used
Gas turbines for power generation are normally used
Rotary compressors are suitable for
Rotary compressors are suitable for
The maximum delivery pressure in a rotary air compressor is
The maximum delivery pressure in a rotary air compressor is
Pick up the correct statement
Pick up the correct statement
The compressor capacity with decrease in suction temperature
The compressor capacity with decrease in suction temperature
The minimum work required for a three stage reciprocating air compressor is ________ the work required for each stage.
The minimum work required for a three stage reciprocating air compressor is ________ the work required for each stage.
In a closed cycle gas turbine, the air is compressed
In a closed cycle gas turbine, the air is compressed
The velocity of air entering in a rocket is _________ as compared to an aircraft.
The velocity of air entering in a rocket is _________ as compared to an aircraft.
An air compressor may be controlled by
An air compressor may be controlled by
Work ratio of a gas turbine may be improved by
Work ratio of a gas turbine may be improved by
The maximum temperature in a gas turbine is
The maximum temperature in a gas turbine is
High air-fuel ratio is used in gas turbines
High air-fuel ratio is used in gas turbines
Gas turbine blades are given a rake
Gas turbine blades are given a rake
The maximum propulsion efficiency of a turbojet is attained at around following speed
The maximum propulsion efficiency of a turbojet is attained at around following speed
Reheating in a gas turbine
Reheating in a gas turbine
The work-done on a compressor will be minimum if air is taken from
The work-done on a compressor will be minimum if air is taken from
Pick up the correct statement
Pick up the correct statement
The working fluid in a turbine is
The working fluid in a turbine is
A centrifugal compressor works on the principle of
A centrifugal compressor works on the principle of
The reason for volumetric efficiency of reciprocating compressor being less than 100 percent is
The reason for volumetric efficiency of reciprocating compressor being less than 100 percent is
The criterion of the thermodynamic efficiency for rotary compressor is
The criterion of the thermodynamic efficiency for rotary compressor is
An after-cooler is used to
An after-cooler is used to
The overall efficiency of the compressed air system is the
The overall efficiency of the compressed air system is the
In axial flow compressor, exit flow angle deviation from the blade angle is a function of
In axial flow compressor, exit flow angle deviation from the blade angle is a function of
Producer gas is produced by
Producer gas is produced by
The compression ratio for the compressor is always _________ unity.
The compression ratio for the compressor is always _________ unity.
Compression efficiency is compared against
Compression efficiency is compared against
The type of rotary compressor used in aeroplanes, is of
The type of rotary compressor used in aeroplanes, is of
In a jet engine, the air-fuel ratio is
In a jet engine, the air-fuel ratio is
In jet propulsion power unit, the inlet duct of diverging shape is used in order to
In jet propulsion power unit, the inlet duct of diverging shape is used in order to
Pick up the correct statement
Pick up the correct statement
Which of the following statement is wrong?
Which of the following statement is wrong?
Gas turbine as compared to internal combustion engine
Gas turbine as compared to internal combustion engine
A gas turbine used in air craft should have
A gas turbine used in air craft should have
The overall isothermal efficiency of compressor is defined as the ratio of
The overall isothermal efficiency of compressor is defined as the ratio of
The capacity of a compressor is 5 m/min refers to
The capacity of a compressor is 5 m/min refers to
Gas turbine works on
Gas turbine works on
The fuel consumption in gas turbines is accounted for by
The fuel consumption in gas turbines is accounted for by
Gas turbine as compared to steam turbine
Gas turbine as compared to steam turbine
The work ratio of a gas turbine plant is defined as the ratio of
The work ratio of a gas turbine plant is defined as the ratio of
Phenomenon of choking in compressor means
Phenomenon of choking in compressor means
The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is
The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is
Volumetric efficiency of a compressor without clearance volume
Volumetric efficiency of a compressor without clearance volume
The ratio of the discharge pressure to the inlet pressure of air is called
The ratio of the discharge pressure to the inlet pressure of air is called
Volumetric efficiency of a compressor with clearance volume
Volumetric efficiency of a compressor with clearance volume
What will be the volume of air at 327°C if its volume at 27°C is 1.5 m³/ mt?
What will be the volume of air at 327°C if its volume at 27°C is 1.5 m³/ mt?
The ratio of isentropic work to Euler work is known as
The ratio of isentropic work to Euler work is known as
Water is injected in gas turbine cycle to
Water is injected in gas turbine cycle to
An air receiver is to be placed outside. Should it be placed in
An air receiver is to be placed outside. Should it be placed in
The hottest point in a gas turbine is
The hottest point in a gas turbine is
Free air is the air at
Free air is the air at
Reheating in a multistage expansion gas turbine ________ compressor work.
Reheating in a multistage expansion gas turbine ________ compressor work.
Turbofan engine employs
Turbofan engine employs
In a jet propulsion
In a jet propulsion
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston.
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston.
For perfect intercooling in a three stage compressor
For perfect intercooling in a three stage compressor
Propulsion efficiency of the following order is obtained in practice
Propulsion efficiency of the following order is obtained in practice
For perfect intercooling in a two stage compressor
For perfect intercooling in a two stage compressor
The compressed air may be used
The compressed air may be used
The work ratio of simple gas turbine cycle depends on
The work ratio of simple gas turbine cycle depends on
The ideal efficiency of simple gas turbine cycle depends on
The ideal efficiency of simple gas turbine cycle depends on
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)
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
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
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
A jet engine has
A jet engine has
Open cycle gas turbine works on
Open cycle gas turbine works on
In a double acting compressor, the air is compressed
In a double acting compressor, the air is compressed
Ratio of indicated h.p. to shaft h.p. in known as
Ratio of indicated h.p. to shaft h.p. in known as
Gas turbine cycle with regenerator
Gas turbine cycle with regenerator
The efficiency of jet engine is
The efficiency of jet engine is
The net work input required for compressor with increase in clearance volume
The net work input required for compressor with increase in clearance volume
