The air is delivered ________ in one revolution in case of a three lobbed rotor. Two times Three times Four times Six times TRUE ANSWER : ? YOUR ANSWER : ?
If the flow of air through the compressor is perpendicular to its axis, then it is a Reciprocating compressor Axial flow compressor Turbo compressor Centrifugal compressor TRUE ANSWER : ? YOUR ANSWER : ?
Axial flow compressor has the following advantage over centrifugal compressor Aerofoil blades are used Larger air handling ability per unit frontal area Higher average velocities Higher pressure ratio per stage TRUE ANSWER : ? YOUR ANSWER : ?
If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete intercooling is given by D₁/D₂ = (p₁/p₃)1/4 D₁/D₂ = (p₁ p₃)1/4 D₁/D₂ = (p₃/p₁)1/4 D₁/D₂ = (p₁ p₃)1/2 TRUE ANSWER : ? YOUR ANSWER : ?
Turbofan engine employs Solid fuel firing One air stream No air stream Two or more air streams TRUE ANSWER : ? YOUR ANSWER : ?
A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine. None of these Lower Higher Same TRUE ANSWER : ? YOUR ANSWER : ?
The maximum delivery pressure in a rotary air compressor is 10 bar 20 bar 50 bar 30 bar TRUE ANSWER : ? YOUR ANSWER : ?
Gas turbines use following type of air compressor Reciprocating type Centrifugal type Lobe type Axial flow type TRUE ANSWER : ? YOUR ANSWER : ?
Pick up the correct statement Gas turbines use both air and liquid cooling Gas turbines have their blades similar to steam turbine Large gas turbines use radial inflow turbines Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip TRUE ANSWER : ? YOUR ANSWER : ?
Maximum delivery pressure is a rotary air compressor is of the order of 10 kg/cm² 25 kg/cm² 6 kg/cm² 16 kg/cm² TRUE ANSWER : ? YOUR ANSWER : ?