Introduction hydroelectric Power what is it?

GLOSSARY 
Alternating Current 
An electric current changing regularly from one direction to the 
opposite. 
Ampere 
The common unit of measurement of electrical current. 
Baseload 
The minimum constant amount of load connected to the power 
system over a given time period, usually on a monthly, seasonal, or 
yearly basis. 
Baseload Plant 
A plant, usually housing high-efficiency steam-electric units, 
which is normally operated to take all or part of the minimum load 
of a system, and which consequently produces electricity at an 
essentially constant rate and runs continuously. These units are 
operated to maximize system mechanical and thermal efficiency 
and minimize system operating costs. 
Bus (buswork) 
A conductor, or group of conductors, that serve as a common 
connection for two or more electrical circuits. In powerplants, 
buswork comprises the three rigid single-phase connectors that 
interconnect the generator and the step-up transformer(s). 
Capability
The maximum load that a generating unit, generating station, or 
other electrical apparatus can carry under specified conditions for a 
given period of time without exceeding approved limits of 
temperature and stress. 
Capacity 
The amount of electric power delivered or required for which a 
generator, turbine, transformer, transmission circuit, station, or 
system is rated by the manufacturer. 
Circuit
A conductor or a system of conductors through which electric 
current flows. 
Current (Electric)
A flow of electrons in an electrical conductor. The strength or rate 
of movement of the electricity is measured in amperes. 
Dam 
A massive wall or structure built across a valley or river for storing 
water. 

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Demand
The rate at which electric energy is delivered to or by a system,