Question

Describe a velocity compounded impulse turbine with a neat sketch.

24 Feb 2025
Answer :
Word Count : 584

A velocity compounded impulse turbine is a type of steam turbine designed to maximize energy extraction from high-pressure steam by utilizing multiple stages of velocity reduction. This turbine consists of a set of fixed nozzles, followed by multiple moving and fixed blades arranged in a specific sequence to efficiently convert the kinetic energy of steam into mechanical energy.

### Working Principle:
The velocity compounded impulse turbine is based on the principle of impulse, where high-pressure steam expands through nozzles and converts its pressure energy into kinetic energy. The high-velocity steam then strikes the first set of moving blades, transferring part of its energy. The steam then passes through a set of fixed blades, which redirect its flow without changing its velocity significantly. This redirected steam impinges on the second set of moving blades, further reducing its velocity while producing additional work.

### Construction:
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