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What is the efficiency of a turbine?
Turbine efficiency is the ratio of actual work output of the turbine to the net input energy supplied in the form of fuel. For stand-alone gas turbines, without any heat recovery system the efficiency will be as low as 35 to 40 per cent.

Which is more efficient impulse or reaction turbine?
Reaction turbines are more efficient as compared to the impulse turbines. ... The reaction turbine has more blades compared to the impulse turbine. The rotor blades turn around as the steam moves past them. In a reaction turbine, the direction of the steam remains the same.

What is the mechanical efficiency of an impulse turbine?
(d) The mechanical efficiency of an impulse turbine is the ratio of the actual work available at the turbine to the energy imparted to the wheel. (e) The overall efficiency of an impulse turbine is the ratio of the actual power produced by the turbine to the energy actually supplied by the turbine.

Which turbine is most efficient?
Impulse turbines are most efficient for use in cases where the flow is low and the inlet pressure is high. Reaction turbines develop torque by reacting to the gas or fluid's pressure or mass.

What is the principle of impulse turbine?
Impulse turbine works on the basic principle of impulse. When the jet of water strikes at the turbine blade with full of its speed, it generates a large force which used to rotate the turbine. The force is depends on the time interval and velocity of jet strikes the blades

The hydraulic efficiency of an impulse turbine is the ratio of the workdone on the wheel to the energy of the jet. ... (b) The hydraulic efficiency of an impulse turbine is maximum when the velocity of wheel is one-half the velocity of jet of water at inlet.

The mechanical efficiency of an impulse turbine is the ratio of the actual work available at the turbine to the energy imparted to the wheel. ... (e) The overall efficiency of an impulse turbine is the ratio of the actual power produced by the turbine to the energy actually supplied by the turbine.