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In a typical electrical grid, the basics of the voltage control are provided by the synchronous generators. These generators are equipped with automatic voltage regulators that adjust the excitation field keeping the voltage at the generator's terminals within the target range. [7]
It investigates the reasons behind the financial success of the Walmart Corporation. The documentary suggests that many criticisms of Walmart arise from feelings of jealousy over the company's success. [1] The documentary Wal-Mart: The High Cost of Low Price was released on the same day as Why Wal-Mart Works. [2]
An electrical grid may have many types of generators and loads; generators must be controlled to maintain stable operation of the system. In an electric power system, automatic generation control (AGC) is a system for adjusting the power output of multiple generators at different power plants, in response to changes in the load. Since a power ...
If the mechanical regulator design is sensitive to small voltage fluctuations, the motion of the solenoid core can be used to move a selector switch across a range of resistances or transformer windings to gradually step the output voltage up or down, or to rotate the position of a moving-coil AC regulator. Early automobile generators and ...
In the 1950s the company commercialized germanium rectifiers (1954) and created the first silicon-based rectifier (1959). In 1974 they developed the first power and Darlington transistors which used glass passivation.
Wal-Mart: The High Cost of Low Price is a 2005 documentary film by director Robert Greenwald and Brave New Films about the American multinational corporation and retail conglomerate Walmart. [2] The film presents a negative picture of Walmart's business practices through interviews with former employees, small business owners, and footage of ...
Digital shelf labels will lessen the burden of updating prices on 120,000 items at Walmart stores. Walmart is replacing its price labels with digital screens—but the company swears it won’t ...
Rate-of-return regulation (also cost-based regulation) is a system for setting the prices charged by government-regulated monopolies, such as public utilities.It attempts to set prices at efficient (non-monopolistic, competitive) levels [1] equal to the efficient costs of production, plus a government-permitted rate of return on capital.