In an ideal impulse turbine, the - Steam Nozzles and Turbines Quiz

Mechanical Engineering : Steam Nozzles and Turbines - Quiz(MCQ)

In an ideal impulse turbine, the

axial velocity at inlet is equal to that at the outlet

relative velocity at the inlet of the moving blade is equal to that at the outlet

whirl velocity at inlet is equalto that at the outlet

absolute velocity at the inlet of moving blade is equal to that at the outlet

Correct Answer : Option (B) : relative velocity at the inlet of the moving blade is equal to that at the outlet

Recently Updated in Steam Nozzles and Turbines Questions

The impulse turbine rotor efficiency will have a maximum value of 0.5 cos2 Î±, where Î± is the nozzle exit flow angle, if the

blades are equiangular

blade solidity is 0.65

blade velocity coefficient is unity

blades are equiangular and frictionless

Correct Answer : blades are equiangular and frictionless

Rateau turbine is

velocity compounded turbine

simple reaction turbine

pressure-velocity compounded turbine

pressure compounded turbine

Correct Answer : pressure compounded turbine

The flow of steam is super-sonic

at the throat of the nozzle

in the divergent portion of the nozzle

at the entrance to the nozzle

in the convergent portion of the nozzle

Correct Answer : in the divergent portion of the nozzle