Side ASide BGenerators are machines that convert ____ energy into _____ energy.

Mechanical  /  Electrical

The electricity that a power plant produces is measured in ______.

Watts

What does a substation do?

Combine electricity from several sources into one location.

One power company is often connected to another by ______.

Tie-lines

What does a load dispatcher (system control) do?

Predicts the demand for electricity.

The ____ of power much always equal the _____ for power.

Supply / Demand

A hydroelectric plant uses mechanical energy from ____ to turn a generator. 

Water

List the 3 components of a fossil fuel plant where energy conversions take place.

Boiler Turbine Generator

In a fossit fuel plant, ____ & ____ energy in steam are converted to mechanical energy in a

turbine.

pressure and thermal

List 2 disadvantages of fossil fuel plants.

Cost of the fuel Plants are more complicated.

Why are fossil fuel plants the major source of electric power today?

Greater flexibility in choosing location of plant and plant can be sized for whatevery output is

necessary.

For proper combustion to take place, the boiler needs a continuous supply of ____ & ____.

Air & Fuel

In a typlical coal burning plant, coal is transported to the plant by a conveyor system and then

fed into a ______, where is is ground into a fine power.

Pulverizer

A large heat exchanger that is part of the steam cycle is the ____.

Condenser

What does the condensate-feedwater system do?

The condensate-feedwater system completed the steam cycle by sending condensate from the

Hotwell back to the boiler.

A ______ _______ ____ system that is an open system uses water over and over again.

Condenser circulating water

The makeup water system _____ water and stores it in tanks until it is needed.

purifies

Steam flows from the boiler to the turbine because of differences in _____.

pressure

When ____ first enters a condenser, it takes up a lot of space, but, as it condenses, the space it

takes up is dramatically reduced.

steam

A vacuum is ______ ______.  

negative pressure

To regulate the amount of power produced by a generator, it is necessary to control the ____

_____ through the turbine that drives it.

steam flow

In the steam cycle, the flow rates of steam and feedwater must be _____.

equal

An imbalance in the steam and feedwater flow rates may result in _____.

Water filling the condenser & backing up into the turbine. A drop in the water level in the boiler

drum, The boiler tubes melting. The boiler filling with water & water being...

If the steam flow & feedwater flow are incrased, the ____ flow & combustion _____ flow must be

adjusted accordingly.

fuel / air

In order to deal with emergency conditions, an operator must _____.

Know the plant's emergency procedures. Know the systems & equipment well enough to take

whatever corrective measures are necessary. Be able to analyze what is happening.

List the 3 general steps to follow if an emergency condition occurs in your plant.

Determine what is going on. Put the plant in safe condition. Perform any follow-up action

necessary to return plant to safe condition.

What do substation(s) do?

Combine electric power from several sources into one location for local distribution.

Two different power systems are connected through ____ _____.

tie-lines

The highest deman for power is generally around _____ _____.

late afternoon

List the 3 major components found in the steam cycle.

boiler turbine condenser

A turbine changes _____ energy into _____ energy.

mechanical    /  electrical

A combination of equipment and pipes connected together to perform a specific function is

called a _____.

system

Heat in a boiler can be provided by burning _____ ____ or ______.

coal, oil, or natural gas.

Pressure in the condenser is usually a _____.

vacuum

What cools the steam in the condenser?

Circulating water inside tubes.  Steam from the turbine posses over the tubes, it is cooled &

condensed into water (condensate), which droops to the bottom of the condenier...

Steam flows from the boiler to the turbine because of a difference in _______.

pressure

To regulate the amount of power generated by a unit ___________.

The flow of feedwater & steam must be controlled.

If feedwater flow is greater than steam flow, the boiler drum will __________.

fill up with water.

If an emergency occurs, an operator must ______.

Perform any necessary follow-up action. Put the plant in a safe condition. Determine what's

going on.

The ______ tells you how much load your unit should be generating.

load dispatcher

Explain what the condensate-feedwater system does.

A support system of pipes & pumps that completed the steam sycle by sending the condensate

back to the boiler.

Pressure in the steam cycle is ______.

Highest in the feedwater system, lowest in the condenser.

Feedwater heaters are heated by ______ steam.

extraction

A system where a fluid is used over and over again is called a ____ ______ system.

closed loop

In what specific part of the boiler is steam actually produced?

water well tubes