Electrical Engineering

If you are referring to a.c. three-phase systems, then a three-wire system is associated with a delta-connected system, while a four-wire system is associated with a star, or wye, system. The conductors being three line conductors and a neutral conductor.

PINCHE paguina culera putos!

A: The electrolytic capacitor consists essentially of two electrodes immersed in an electrolyte with a film that constitute the dielectric of one or both. The dielectric film which is formed by applying a potential between electrodes is unidirectional having hi resistance in one direction and being conductive in the other. Aluminum foil is good but tantalum in its place reduce the size by a factor of 10.

Assuming 208V 1 phase, 125% of the FLA, 40X 1.25 = 50, A 50 amp 2 pole breaker would be used and would be the maximum allowed by the NEC

using highly inductive loads may lead to reduction in the power factor. or consumption of unappreciable amount of power also results in the same.

methods to improve PF .

using synchronous condensers

using capacitor banks

using ow inductive loads

• Relatively unproven
• Noisy
• Not-well suited for smooth torque production

A Power Diode is used when a large current is involved which needs a larger junction to dissipate the heat generated. An advantage of using the Power Diode is it is able to withstand high voltage without being damaged. A disadvantage about the Power Diode is that being a large junction it is unable to stand high frequency applications.

On the load side of the contactor. T1,T2,T3.

The earliest reference to a fuse is open to question. It was suggested by W.H. Preece, during a discussion on a paper by A.C. Cockburn presented in 1887, that platinum wires had been used as fuses to protect submarine cables as early as 1864. But in 1880, T. A. Edison patented what might be regarded as the first 'modern' fuse: a semi-enclosed type consisting of a wire element surrounded by a glass envelope intended to protect the immediate environment from the effects of the wire melting.

Solid--->Liquid---->Gas

It is a standard diode, with an additional line leaving the cathode (- side) for the gate. See wikipedia link.

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s.sudhakar

Alternating Current

Sebuah batang karbon memiliki panjang 3 cm dan penampang lintang bujursangkar dengan sisi-sisi

0,5 cm. Beda potensial 8,4 V diberikan sepanjang batang. (a) Berapakah resistansi pada batang

tersebut? (b) Berapakah arus dalam resistor ini?

If it is a physical switch, this is called a "relay" or a "contactor". If it is a semiconductor device, it is typically a triac, SCR or a thyristor.

It will just be the sum of the current-carrying capacity of each individual cable.

1. Fundemental Period of building moving forward and backward

Decrease

E=Vt + Ia jXS

Where E excitation voltage

Vt Terminal voltage

Stator Current Ia

Xs synchronous Reactance

Slip rings are used in AC while split rings are used in DC generators

Alternating Current for highly inductive load i.e. motors...whereas AC21 is for resistive load....i.e. heating elements. this is what you called utilization category...

a control used to manually adjust the transformer to compensate for inconsistent electrical output

As ohm's low says Voltage is directly proportional to Current. i.e V=IR where R is constant and it is resistance so we can say that when one ampire current flows through a path and produces 1 Volt voltage drop then the resistance is 1 ohm. Regards Kuldeep pradhan

defination of suddenly applied load