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Without reducing the fluid flow rate, the speed of an impulse steam turbine can be brought down to practical limits by which of the following methods? (1) Large flywheel (2) Centrifugal governor (3) Velocity compounding (4) Steam bleeding

Without reducing the fluid flow rate, the speed of an impulse steam turbine can be brought down to practical limits by which of the following methods? (1) Large flywheel (2) Centrifugal governor (3) Velocity compounding (4) Steam bleeding Correct Answer 3 only

Concept:

Velocity compounding in impulse turbine is used to solve the problem of single stage impulse turbine for use of high pressure and temperature steam.

In above figure, there are 2 rings of moving blades separated by single fixed blades.

Entire pressure drop occurs in Nozzle, and there are no subsequent losses in any following stages.

Velocity drops partially in moving blades and remains constant in fixed blades

Related Questions

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