The whirl velocity at inlet of Francis turbine is given to be 20 m/s. The blade velocity is given as 35 m/s. What is the hydraulic efficiency for a head of 100 m?

The whirl velocity at inlet of Francis turbine is given to be 20 m/s.

1.	The whirl velocity at inlet of Francis turbine is given to be 20 m/s. The blade velocity is given as 35 m/s. What is the hydraulic efficiency for a head of 100 m?
A.	80%
B.	90%
C.	70%
D.	98%
Answer» D. 98%

Discussion

No Comment Found

Related MCQs

The volume flow rate of water in 10 m3/s at an available head of 60 m (g = 10 m/s3). Find the shaft power (in MW) if the overall efficiency of the turbine is 90%.
The power output of the shaft is 5 MW. The volume flow rate of water in 10 m3/s at an available head of 60 m. Find the overall efficiency of the turbine in % (g = 10 m/s2)?
The whirl velocity at inlet is 15 m/s and blade velocity is 10 m/s. The volume flow rate of water in 20 m3/s. Find the power output available at the shaft if the mechanical efficiency is 95% (in MW)?
The power available at the shaft of a Francis turbine is 1 MW. The volume flow rate of water in 25 m3/s, whirl velocity at inlet is 10 m/s and blade velocity is 5 m/s. Find the mechanical efficiency (in %)?
The volumetric efficiency of a given turbine is 80%. If volume flow rate of water in given to be 30 m3/s, find the volume of water (m3) NOT flowing over the runner blades per second?
The volumetric efficiency of a Francis turbine is given to be 90%. If the volume flow rate through the turbine is 25 m3/s. What is the flow rate of water over the runner blades (in m3/s)?
THE_VOLUMETRIC_EFFICIENCY_OF_A_FRANCIS_TURBINE_IS_GIVEN_TO_BE_90%._IF_THE_VOLUME_FLOW_RATE_THROUGH_THE_TURBINE_IS_25_M3/S._WHAT_IS_THE_FLOW_RATE_OF_WATER_OVER_THE_RUNNER_BLADES_(IN_M3/S)??$
The power available at the shaft of a Francis turbine is 1 MW. The volume flow rate of water in 25 m3/s, whirl velocity at inlet is 10 m/s and blade velocity is 5 m/s. Find the mechanical efficiency (in %)?$
The_volumetric_efficiency_of_a_given_turbine_is_80%._If_volume_flow_rate_of_water_in_given_to_be_30_m3/s,_find_the_volume_of_water_(m3)_NOT_flowing_over_the_runner_blades_per_second?$
The hydraulic efficiency of a Francis turbine is 90%, the mechanical efficiency is 95% and the volumetric efficiency is assumed to be 100%. Fine the overall efficiency (in %)?

The whirl velocity at inlet of Francis turbine is given to be 20 m/s. The blade velocity is given as 35 m/s. What is the hydraulic efficiency for a head of 100 m?

Discussion

No Comment Found

Related MCQs

Reply to Comment