
CHAPTER 9 – HYDROELECTRIC PLANT
Authored by Nara Snipe
Mathematics
University

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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
In turbine installation, the air is removed from the condenser by ________.
A. Air pump
B. Air injector
C. Air ejector
D. Air jet
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
The primary purpose of a turbine in a fluid loop is to:
A. Add energy to the flow
B. Add mass to the flow
C. Extract energy from the flow
D. None of the above
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
A vena contracta in a fluid jet issuing through a hole in a plate is located approximately:
A. 10 diameters downstream of the hole
B. At jet’s minimum diameter
C. At the orifice minimum diameter
D. At the orifice maximum diameter
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
The following are all examples of indirect (secondary) miscellaneous methods to measure flow except:
A. Turbine and propeller meters
B. Magnetic flow meters
C. Positive displacement meters
D. Hot-wire anemometers
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
One could expect the possibility of Reynolds number similarity in all of the following cases except:
A. Pumps
B. Fans
C. Turbines
D. Weirs
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
One could expect the possibility of Froude number similarity in all of the following cases except:
A. Surface ships
B. Surface wave motion
C. Flow over weirs
D. Closed-pipe turbulent pipe flow
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
One could expect the possibility of Froude number similarity in all of the following cases except:
A. Motion of a fluid jet
B. Flow over spillways
C. Surge and flood waves
D. Subsonic airfoils
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