Title: Unit 7 Quiz
Course: SGRD 105 Microgrids and Renewable Energies > Section: SGRD 105 Microgrids and Renewable Energies

Q: Energy in water can take the form of
- gravitational energy
- pressure energy
- kinetic energy
- all of the above
A: all of the above

Q: The energy per unit weight of water has the physical dimension of length and is called the
- specific weight
- head
- energy density
- flow rate
A: head

Q: Large scale hydroelectric generation accounts for what percentage of U.S. electric power
- 1 %
- 10 %
- 3 %
- 30 %
A: 10 %

Q: A hydrokinetic system utilizes
- velocity head of free flowing water
- elevation head established by a dam
- kinetic energy of jets which turn an impulse turbine
- steam driven turbine
A: velocity head of free flowing water

Q: The metric system unit of pressure is
- psi
- pascal
- newton per square meter
- both B and C
A: both B and C

Q: Water is flowing velocity of 2.0 m/s in a pipe with cross sectional are of 0.03 m2 has a volume flow rate of
- 0.06 m^3/s
- 6.0 m^3/s
- 1.5 m^3/s
- 0.015 m^3/s
A: 0.06 m^3/s

Q: Net head accounts for head losses due to
- fluid viscosity
- gross head
- pipe wall roughness
- both A and C
A: both A and C

Q: The velocity head of a river flowing at a speed of 3.0 m/s is
- 50.0 m
- 5.0 m
- 0.5 m
- 5.0 cm
A: 0.5 m

Q: Axial flow hydrokinetic turbines have a rotation axis
- perpendicular to the current
- parallel to the current
- oriented due north
- oriented due east
A: parallel to the current

Q: A Pelton wheel is an example of an
- reaction turbine
- Gorlov helical turbine
- impulse turbine
- gravitational vortex turbine
A: impulse turbine