Explain the principle of working of impulse steam turbine.

Explain the principle of working of impulse steam turbine. 
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Answer :

When steam enters the turbine it suffers a change in direction and momentum, which gives rise to the rotation of the turbine. There will be no drop in pressure in impulse steam turbine.  
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What is a stage in a steam turbine?

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Following are the different power losses in steam turbine.

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