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... a. Compute the filed current required when the motor is operating at rated voltage, 4200kW input power factor leading. Account for saturation inder load by the method described in the paragraph relating to Eq. 5.29. b. In addition to the data given in Problem 5.10, additional points on the open-circ ...
Low-Voltage Bipolar-Type DC Microgrid for Super High Quality
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... 1) Three-wire bipolar dc distribution contributes to lower the distribution voltage to ground. In addition, it allows dc/dc converters in load side choose source voltage from 340 V, +170 V, or −170 V. 2) The distribution of the load-side converters contributes to provide a super high quality power s ...
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... Lab 2: Basic Circuit Wiring & Testing In the space to the right sketch an electrical diagram (schematic) of a simple electrical circuit including all required elements. Use a DC power source and a lamp for the load. Also include a switch for turning off and on the current to the load. Label everythi ...
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... outlets with 2.48-in. center-to-center spacing, 15-ft. AC line cord and adjustable mounting clips for installation in a wide variety of applications. Protects connected equipment from transient surges and line noise with built-in surge suppression rated at 1050 joules. This corded, multi-outlet stri ...
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... experience” to students. The aim of this lab is to enhance the knowledge and skills of the students and prepare them for the competitive job market. The students are encouraged to utilise this modern facility not only during the classes but also can book it in different other timings in a flexible w ...
< 1 ... 1625 1626 1627 1628 1629 1630 1631 1632 1633 ... 1974 >

Mains electricity



Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.
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