The overall isothermal efficiency of the compressor is defined as the ratio of Volume of free air delivery per stroke to the swept volume of the piston Work required to compress the air isothermally to the actual work required to compress the air for the same pressure ratio Isothermal power to the shaft power or B.P. of the motor or engine required to drive the compressor Isentropic power to the power required to drive the compressor TRUE ANSWER : ? YOUR ANSWER : ?
The criterion of the thermodynamic efficiency for rotary compressor is Polytropic compression None of the listed here Isentropic compression Isothermal compression TRUE ANSWER : ? YOUR ANSWER : ?
The compressor capacity is defined as the None of these Volume of air delivered by the compressor Volume of air sucked by the compressor during its suction stroke Actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions TRUE ANSWER : ? YOUR ANSWER : ?
When the temperature of air leaving the inter-cooler, in a two stage compression with inter-cooler, is ________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling. Less than Equal to None of these More than TRUE ANSWER : ? YOUR ANSWER : ?
Gas turbine blades are given a rake In the direction of motion of blades Equal to zero Opposite to the direction of motion of blades Depending on the velocity TRUE ANSWER : ? YOUR ANSWER : ?
Mechanical efficiency of gas turbines as compared to I.C engines is Lower Same Higher None of these TRUE ANSWER : ? YOUR ANSWER : ?
In a centrifugal compressor, the flow of air is ________ to the axis of compressor. Parallel Perpendicular None of these Inclined TRUE ANSWER : ? YOUR ANSWER : ?
It is not possible to use closed gas turbine cycle in aeronautical engines because It is bulky None of these It is inefficient It requires cooling water for its operation TRUE ANSWER : ? YOUR ANSWER : ?
The ideal efficiency of simple gas turbine cycle depends on Minimum cycle temperature Maximum cycle temperature Pressure ratio All of these TRUE ANSWER : ? YOUR ANSWER : ?
In air compressors, free air delivery means the Volume of air delivered by the compressor Actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions Volume of air sucked by the compressor during its suction stroke None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?