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Electrical Engineering
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.
23,056 Questions
Advantages of dynamic voltage restorer?
hi my question is why to use de DVR end eplain why i do to use the simulation and studieng of the Dynamic Voltage restorer why matlab.
What is the different between 3phase plus N generator coil and motor coil?
Generator coils generate the voltage, motor coils use the generated voltage.
What is total break time of circuit breaker?
refer to
http://yourelectrichome.blogspot.com/2011/03/circuit-breaker-time-total-break-time.html
What is the difference betbeen capacitor and condensor?
A: Both nomenclature are indicator of capacitance it can be used both ways. However the predominate usage is capacitor since it resemble capacitance
What is collector bypass capacitor?
A: It is not a bypass it is a negative feedback to effect the input voltage, Bias is when a DC voltage is applied to insure proper operation
What is the current flow through the 10 Ohms load resistor in amps?
A: It takes two known to give results in ohm laws. You have given us 1
What is the KVAR if kva is 1750 and kw is 1225?
The KVAR will be 1249.75, the power factor is .7.
KVAR = sqrt [ KVA^2 - kW^2 ]
Transformer coils are normally used to step down power from high power lines to a power you can actually use in your house. This works through the ratio of windings on a coil to the windings on the output side.
According to ohms law...
V=I * R
So from the given values
V = 4.3*16 = 68.8 Volts
What is the difference between a 1000 micro farad capacitor and a 1500 micro farad capacitor?
about 500 uF
For AC circuits what is meant by the term in phase?
Both the current and voltage are represented by sine waves. In a pure resistive circuit the current and voltage wave forms would have the positive and negatives peaks and zero crossings perfectly aligned with the other waveform. If they were 180 degrees out of phase the positive cycle peak of one would align with the negative peak of the other and would be producing zero power. In between a zero and 180 degree phase shift the Power Factor would range from 1 with zero phase shift to zero with 180 degree phase shift.
Power = Current x Voltage x Power Factor.
Another AnswerFor a three-phase supply, the term 'phase' describes any one of the armature windings; for a three-phase load, the term 'phase' describes any one of the three loads. The three energised conductors that join the load to the supply are called 'lines'.
So phase voltages are the voltages appearing across individual armature windings or loads, whereas line voltages are the voltages appearing across a any pair of line conductors.
Can the neon in a glass tube be excited more than once?
Yes, the gas is ionized every time sufficient voltage is applied and remains that way until the voltage is removed. While the gas is ionized, individual neon atoms are continually bombarded by free electrons, causing their orbital electrons to jump to higher energy (excited) states. When an electron falls back to the lower energy state, it emits a photon.
What type of electrical equipment cannot convert AC into DC?
A transformer cannot convert AC into DC.
Why appliances seldom connected in series?
A: They are designed to operate from 120v AC which is readily available in every house. To make them work in series likes a refrigerator the wires will have to carry twice the load to assume the same power needed not very desirable or practical
What is a high end frequency scanner?
A: It is a terminology to imply that the scanner will be used at the hi end of frequency as opposed to low frequency
A: It can be AC but DC provide a stable environment to get reliable results
Can I get example of Insulated overhead power lines more than 50kV with Images?
Voltages in that range do not use insulation around the conductor. They are bare conductors and use air and separation from one another for the insulation factor.
What is ranking of giki in world?
GIKI ranks as one of the top institutions in the world. The exact ranking is not known, but the university is a private research school in Pakistan.
What is cross field principle?
A seperately excitd 2pole dc generator consitstng of many cnoductors rotating in magneti2 field producd by field coils with no load connected to it
What is the great advantage of using the parallel circuits in home?
in parallel circuit voltage remains same ..... so all the appliances run at their rated voltages without having any problem as real power supplied depends on voltage .... p=(v^2)/R
What is the characteristics for a generator on a full load?
What characteristics are you looking for? At full load, a synchronous generator will be spinning at synchronous speed, providing real power (watts), and likely some reactive power (vars), or it may be taking reactive power from the system to help hold the system voltage down under light loading conditions.
What is the best dielectric grease for electrical connections?
Pure anhydrous lanolin will stick the longest, petroleum jelly is really easy to come by.
