25.3.1 - Efficiency of Systems
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Practice Questions
Test your understanding with targeted questions
What does the hydraulic gradient line correspond to in an open channel flow?
💡 Hint: Consider what represents the water's surface.
Define pump efficiency.
💡 Hint: What does a pump do to energy?
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the hydraulic gradient line indicate in a pipe?
💡 Hint: Think about what forces the water up.
True or False: Pumps extract energy from the fluid.
💡 Hint: What role does a pump play in increasing pressure?
1 more question available
Challenge Problems
Push your limits with advanced challenges
A system uses a pump to supply water through a 50 mm diameter pipe at a flow rate of 25 L/s. Given a roughness of 0.1 mm, calculate the head loss due to friction over a 100 m length of pipe.
💡 Hint: You will need to calculate the Reynolds number for determining flow regime first.
Determine the efficiency of a turbine if it extracts 120 kW of mechanical energy from fluid flowing at a mass flow rate of 15 kg/s with an inlet pressure of 300 kPa and outlet pressure of 100 kPa.
💡 Hint: Make sure to consider the power generated at both pressures.
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