Q. The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

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Q. The velocity of whirl at outlet for an axial discharge turbine is

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Q. In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is __________ the relative velocity of steam at inlet tip of the blade.

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Q. The friction present between the steam and the nozzle surfaces reduces the heat drop by

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Q. An impulse turbine as compared to a reaction turbine, for a given power has __________ row of blades.

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Q. In pressure compounding of an impulse turbine, the total pressure drop of the steam does not take place in the first nozzle ring, but is divided equally among all the nozzle rings.

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Q. When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

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Q. In an ideal impulse turbine, the

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Q. During flow through a nozzle, no heat is supplied or rejected by the steam.

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Q. In a reaction turbine, when steam flows through the moving blades,

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