Turbomachines Set 2

a drum type rotor ✘ a disc type rotor ✘ a drum type rotor or a disc type rotor ✘ none of the above ✔

step ✘ pair ✘ stage ✘ state ✔

Air velocity goes no increasing in impeller followed by diffuser ✘ Air velocity goes no decreasing in impeller followed by diffuser ✘ Air velocity increases in impeller and then decreases in diffuser ✘ Air velocity decreases in impeller and then increases in diffuser ✔

head race and tail race ✘ head race and net head ✘ head race and friction losses ✘ net head and friction losses ✔

head race ✘ tail race ✘ gross head ✘ net head ✔

compressor ✘ turbine ✘ pump ✘ all of the above ✔

Radial ✘ Axial ✘ Tangential ✘ None of the above ✔

converging ✘ diverging ✘ constant ✘ unpredictable ✔

Impulse turbine ✘ Reaction turbine ✘ Both and ✘ None of the above ✔

impulse momentum ✘ angular momentum ✘ both and ✘ none of the above ✔