A compressor at high altitudes will require __________ power.
In a two stage reciprocating compressor with intercooler, the amount of work saved with incomplete intercooling is __________ that in case of complete intercooling.
A compressor mostly used for supercharging of I.C. engines is
The gas in cooling chamber of a closed cycle gas turbine is cooled at
Standard air is the air at __________ and relative humidity ofpercent.
The volume of air delivered in a medium capacity air compressor per unit time is
In axial flow compressors, the flow of air is parallel to the axis of compressor.
The overall isothermal efficiency of the compressor is defined as the ratio of
The mean effective pressure of the compressor is the
The free air delivery is the volume of air that can be delivered by a compressor freely.
The workdone on a compressor will be minimum if air is taken from
In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into
A 3 m3/min compressor means that it
In a single stage, single acting reciprocating air compressor without clearance volume, the workdone is maximum during
In a closed cycle gas turbine, the air is compressed
The ratio of the isothermal power to the shaft power or brake power of the motor or engine required to drive the compressor is called overall isothermal efficiency.
The minimum work required for a three stage reciprocating air compressor is __________ the work required for each stage.
The reason for volumetric efficiency of reciprocating compressor being less thanpercent is
The ratio of the discharge pressure to the inlet pressure of air is called
The compression ratio for the compressor is always __________ unity.
The compressor capacity is defined as the
In a single stage, single acting reciprocating air compressor, without clearance volume, the workdone is minimum during
In a double acting compressor, the air is compressed
For a multi-stage compressor, the polytropic efficiency is constant throughout for all the stages.
For minimum work in multi-stage compression, the workdone on all stages should be equal.
A regenerator in a gas turbine improves thermal efficiency.
The assumption made in two stage compression with intercooler is that
A simple turbo-jet engine is basically a gas turbine engine equipped with a propulsive nozzle and diffuser.
The basic principle of the rocket propulsion is the same as that of jet propulsion.
In a high pressure compressor, the delivery pressure is