6-22 the irreversible losses in the penstock and its inlet and those after the exit of the draft tube are estimated to be 7 m. the elevation difference between the reservoir surface upstream of the dam and the surface of the water exiting the dam is 140 m. if the flow rate through the turbine is 4000 l/min, determine (a) the power loss due to irreversible head loss, (b) the efficiency of the piping, and (c) the electric power output if the turbine-generator efficiency is 84 percent.

What is power loss?
The interruption of electric power entirely or partially as a result of factors outside the control of the "insured" is referred to as "loss of power." Only if you kept the refrigeration unit in good working order right up until the loss would coverage be applied. The liability cap for Policy C is not raised by this coverage. With regard to this coverage, the Power Failure exclusion doesn't really apply. Unique Deductible Any other deductible clause in this policy will be replaced by the following in regards to losses covered by this Additional Coverage. Only the portion of the total loss payable which exceeds $100 will be covered by us. For this coverage, there is no other deductible.

Write down the given data.
Irreversible losses, h_L = 7m
Total head, H = 140m
Flow rate, Q = 4000 L/min = 4000/1000 x 60 m^3/s
Q = 0.0666m^3/s
Generator efficicency, n_G = 84%

Find the power loss due to irreversible head loss.
P_L = p x Q x g x h_L = 1000 x 0.0666 x 9.81 x 7
P_L = 4573.422 W
P_L = 4.573 kW

To learn more about power loss
https://brainly.com/question/24440700
#SPJ4