Phenomenon of choking in compressor means
Phenomenon of choking in compressor means
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.
In a closed cycle gas turbine, the air is compressed
In a closed cycle gas turbine, the air is compressed
After-cooler is used to
After-cooler is used to
Open cycle gas turbine works on
Open cycle gas turbine works on
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
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
Gas turbine blades are given a rake
Gas turbine blades are given a rake
Only rocket engines can be propelled to space because
Only rocket engines can be propelled to space because
Choose the correct statement
Choose the correct statement
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
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
Pick up the correct statement
Pick up the correct statement
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
In a double acting compressor, the air is compressed
In a double acting compressor, the air is compressed
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
The criterion of the thermodynamic efficiency for rotary compressor is
The criterion of the thermodynamic efficiency for rotary compressor is
The compressed air may be used
The compressed air may be used
Rotary compressors are suitable for
Rotary compressors are suitable for
In a jet engine, the air-fuel ratio is
In a jet engine, the air-fuel ratio is
To avoid moisture troubles, the compressed air main line should
To avoid moisture troubles, the compressed air main line should
Volumetric efficiency of a compressor without clearance volume
Volumetric efficiency of a compressor without clearance volume
The air power of the compressor is also known as
The air power of the compressor is also known as
Producer gas is produced by
Producer gas is produced by
A jet engine has
A jet engine has
Volumetric efficiency of a compressor with clearance volume
Volumetric efficiency of a compressor with clearance volume
Gas turbine cycle with regenerator
Gas turbine cycle with regenerator
The ideal efficiency of simple gas turbine cycle depends on
The ideal efficiency of simple gas turbine cycle depends on
For perfect intercooling in a two stage compressor
For perfect intercooling in a two stage compressor
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
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 maximum delivery pressure in a rotary air compressor is
The maximum delivery pressure in a rotary air compressor is
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
Gas turbine as compared to steam turbine
Gas turbine as compared to steam turbine
Which of the following statement is wrong?
Which of the following statement is wrong?
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 fuel consumption in gas turbines is accounted for by
The fuel consumption in gas turbines is accounted for by
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
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
Isothermal compression though most efficient, but is not practicable because
Isothermal compression though most efficient, but is not practicable because
A machine used to raise the pressure of air is called
A machine used to raise the pressure of air is called
Free air is the air at
Free air is the air at
Pick up the correct statement
Pick up the correct statement
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)
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
Gas turbine as compared to internal combustion engine
Gas turbine as compared to internal combustion engine
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 working fluid in a turbine is
The working fluid in a turbine is
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 hottest point in a gas turbine is
The hottest point in a gas turbine is
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
Gas turbine works on
Gas turbine works on
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.
A turboprop is preferred to turbojet because
A turboprop is preferred to turbojet because
Water is injected in gas turbine cycle to
Water is injected in gas turbine cycle to
Standard air is the air at
Standard air is the air at
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 overall efficiency of the compressed air system is the
The overall efficiency of the compressed air system is the
Ratio of indicated H.P. and brake H.P. is known as
Ratio of indicated H.P. and brake H.P. is known as
A gas turbine used in air craft should have
A gas turbine used in air craft should have
An after-cooler is used to
An after-cooler is used to
The capacity of a compressor is 5 m/min refers to
The capacity of a compressor is 5 m/min refers to
Gas turbines for power generation are normally used
Gas turbines for power generation are normally used
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
Water gas is produced by
Water gas is produced by
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
The compression ratio for the compressor is always _________ unity.
The compression ratio for the compressor is always _________ unity.
The overall isothermal efficiency of compressor is defined as the ratio of
The overall isothermal efficiency of compressor is defined as the ratio of
In gas turbines, high thermal efficiency is obtained in
In gas turbines, high thermal efficiency is obtained in
The efficiency of jet engine is
The efficiency of jet engine is
A centrifugal compressor works on the principle of
A centrifugal compressor works on the principle of
The compressor capacity with decrease in suction temperature
The compressor capacity with decrease in suction temperature
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
Ratio of indicated h.p. to shaft h.p. in known as
Ratio of indicated h.p. to shaft h.p. in known as
The work ratio of simple gas turbine cycle depends on
The work ratio of simple gas turbine cycle depends on
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
Reheating in a multistage expansion gas turbine ________ compressor work.
Reheating in a multistage expansion gas turbine ________ compressor work.
High air-fuel ratio is used in gas turbines
High air-fuel ratio is used in gas turbines
Pick up the correct statement
Pick up the correct statement
The indicated work per unit mass of air delivered is
The indicated work per unit mass of air delivered is
Compression efficiency is compared against
Compression efficiency is compared against
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
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?
An air compressor may be controlled by
An air compressor may be controlled by
Propulsion efficiency of the following order is obtained in practice
Propulsion efficiency of the following order is obtained in practice
The mean effective pressure of the compressor is the
The mean effective pressure of the compressor is the
The maximum temperature in a gas turbine is
The maximum temperature in a gas turbine is
Work ratio of a gas turbine may be improved by
Work ratio of a gas turbine may be improved by
Turbofan engine employs
Turbofan engine employs
A closed cycle gas turbine works on
A closed cycle gas turbine works on
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.
The ratio of isentropic work to Euler work is known as
The ratio of isentropic work to Euler work is known as
The net work input required for compressor with increase in clearance volume
The net work input required for compressor with increase in clearance volume
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)
For perfect intercooling in a three stage compressor
For perfect intercooling in a three stage compressor
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?
Reheating in a gas turbine
Reheating in a gas turbine
The type of rotary compressor used in aeroplanes, is of
The type of rotary compressor used in aeroplanes, is of
In a jet propulsion
In a jet propulsion
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
