Question

What is needed to produce hydroelectric power? Group
of answer choices

generator

all of the above

turbine

water

Answer #1

Hydroelectric power is generated at a dam that produces a head
of 180 ft and a reservoir containing 30 x 106
m3 of water. Calculate the amount of energy can be
generated from this reservoir by a turbine generator system whose
overall efficiency is 50%. Consider the yield and load factor are
both 0.75.
If the yield factor measurement for the above power plant is
increase to 110%, the amount of energy generated will be increase.
You can either support...

Ten turbines are installed in a hydroelectric power station,
each with a diameter of 4.5 m impeller and each generating a
mechanical power of 54 MW at 107 rpm and with an efficiency of
93.8%, for a net head of 65 m. A) Determine the specific speed of
each turbine in dimensionless form and in units of the American
system. B) What type of turbine should have been selected? Justify
your answer. B) Calculate the flow that passes through each...

In a point source outbreak
Group of answer choices
all of the above can describe a point source outbreak
all individuals are exposed to the causative agent over a brief
period of tim
individuals transmit the disease to others and there are rolling
waves of infection
individuals are exposed to the causative agent continuously

The real balance effect is the change in
Group of answer choices
purchasing power that results from a change in income.
the amount of money one has that results from a change in
income.
purchasing power that results from a change in the price
level.
the amount of money one has that results from a change in the
price level.
none of the above

1.
The power of a statistical hypothesis test should be
Group of answer choices
small
large
equal to 1 - α
2.
If the Type II error rate of a statistical hypothesis test is
0.15,
Group of answer choices
the Type I error rate is 0.15
the Type I error rate is 0.85
the power is 0.15
the power is 0.85
3.
If sampled observations are from a normal distribution, the
QQplot should look
Group of answer choices
bell-shaped
u-shaped...

100% of DNA is needed to encode for proteins.
Group of answer choices
True
False

15.
If price increases above the equilibrium,
Group of answer choices
a surplus will develop.
a shortage will develop.
supply will shift.
demand will decrease.
16.
If a surplus develops in a market,
Group of answer choices
price will fall to equilibrium.
price will increase to equilibrium
supply will shift.
The Yankees suck but how about dem Giants.

The opportunity cost of getting a job is:
Group of answer choices
the effort needed to find a job
the benefit you would have obtained if you had not taken the
job
the benefit you obtained from taking the job
the income earned by taking the job

1. [1pt] Decide whether each of the following statements are
T-True, or F-False. (If the first is T and the rest are F, enter
TFFFF)
A) About 10-15 percent of the power in the solar spectrum is in
a wavelength region to which silicon photovoltaic cells are
sensitive
B) If the windspeed doubles, an ideal windmill will produce
double the power
C) The city of Boulder produces at most a few hundred kilowatts
of electrical power from hydroelectric plants using...

Ivan Pavlov and B.F. Skinner’s experiments suggested that:
Group of answer choices
a. All behaviors are inherited
b. Behaviours are learned
c. All behaviors are imprinted
d. a) and b)
e. All of the above

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