Suppose the dam is 80% efficient at converting the water's potential energy to electrical energy. How many kilograms of water must pass through the turbines each second to generate 45.0 MWMW of electricity? This is a typical value for a small hydroelectric dam.

This question involves the concepts of efficiency, potential energy, and electrical energy.

"2.2 x 10⁵ kg/s" of water must pass through the turbines each second, assuming a waterfall height of 26 m.

First, we will use the formula for the efficiency of conversion from potential energy to electrical energy.

assuming h = 26 m:

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The attached picture shows the pyramid representing energy efficiency.

Explanation:

Let assume that the water dam has a fall of 35 meters. The required instantaneous potential energy is:

The instantaneous potential energy has the following model:

The mass flow rate needed to produced the required energy production:

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

the part of the wave he is travelling on is the crest