SSC JE Mechanical Engineering 2014 Set 2 Paper

Question : 108 of 200

Marks: +1, -0

A reaction turbine (hydraulic) discharge 34 m

^{3}

/s under a head of 8 m and with an overall efficiency of 91%. The power developed in MW is :

Solution:

Given Q = 34 m

^{3}

/s,
H = 8 m,

η_0

= 91%, P = ?
We know

η_0=P/{ρgQH}

⇒

91=P/{1000 ×9.81 ×34× 8}

[P= 2.42 \Mw]

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