The critical pressure ratio for gases is

More Questions from Steam Nozzles and Turbines

• The velocity of steam at throat of the nozzle is __________ the velocity of sound.
• The reheat factor depends upon
• The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam is called
• The discharge through a nozzle is maximum for a certain value of exit pressure. This pressure is known as critical pressure.
• A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be
• In an impulse turbine
• The compounding of turbines is done in order to
• The efficiency ratio is the ratio of total useful heat drop to the total isentropic heat drop.
• The nozzle efficiency is the ratio of
• The ratio of the cumulative heat drop to the isentropic heat drop is called reheat factor.

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