0
Electrical Engineering
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.
23,056 Questions
What are brighter 6000K lights or 10000K?
Neither, the brightness varies with the wattage rating not the color temperature rating.
It is called color temperature because the perceived color varies with the color temperature rating. The higher the color temperature the "whiter" the light from the light bulb. Very low color temperatures will result in red or red-orange light, medium color temperatures will result in yellow light, high color temperatures will result in pure white light, and excessively high color temperatures will result in white light with a slightly blue cast (I think 10000K will be blue-white light).
Sometimes it appears to the human eye that a pure white light is brighter than a red or yellow light of the same wattage, but this is not true when measured by a light meter.
What is the function of the time delay Fuse?
The time delay fuse allows a momentary overload due to startup current.
False. A device that is used to open the circuit when the current flow is too great is a circuit breaker or fuse.
A disconnect switch is a manual device that isolates or turns off the load.
Sag produced in the conductor of a transmission line depends on?
-The tension of the cable (the tighter, the less sag, but this can cause other problems if too tight)
-The temperature outside (the higher the temperature, the more it will sag)
-The amount of current flowing through the cable (the more current, the hotter the conductor will get = more sag)
-The type of cable (aluminimum will sag more than copper; ACSR will sag less than straight aluminimum).
What is core magnetic balance test of transformer?
magnetic core balance test is used to find out the flux distribution. It can conduct either in HV side or LV side.
In HV side, applying voltage between 2 phases and measuring the voltage across other phase.(eg.applying b/w U&V, and voltage b/w V&W , W&U measuring.)
In LV side, applying voltage b/w any phase....and measuring voltage across other phases.
Result: sum of measured voltage will be equal to applied voltage.
There is insufficient information in the question to properly answer it. You did not provide details of the "following circuit". Please restate the question.
Why is the frequency of Pakistan is 50 Hz?
Using a standard frequency makes it easier to acquire all forms of electrical equipment. European countries decided to use 50 Hz when electricity supplies started, while most American countries have always used 60 Hz. Japan uses both 50 and 60 Hz. Pakistan decided to go with the European standard.
50 Hz gives a slightly lower transmission loss over long distances, but the transformers and other magnetic components have to be made 20% larger than for 60 Hz.
What is the current carrying capacity of acsr wolf?
The current carrying capacity of ACSR (Aluminum Conductor Steel Reinforced) Wolf can vary based on several factors, including ambient temperature, installation conditions, and the specific configuration of the conductor. Typically, the carrying capacity ranges from approximately 200 to 300 amperes, depending on these conditions. For precise values, it's essential to refer to manufacturer specifications or relevant electrical codes.
How are accuracy and precision used when communicating design ideas?
Its used to help keep objects as close or precise as possible. Helps others to understand you measurements.
A short circuit is simply a circuit in which the resistance is substantially low. This means that the current of electrons flows far too fast and overheats. This can also form electric arcs (electrons jumping from one point to another). Three common results of short circuits can be: overheating (causing fires), overheating (causing explosions), and electric arcs (causing electric shock).
Define and explain Negative resistance?
Plot a V-I curve for an ordinary resistor and you'll get a straight line with positive slope: as current goes up, so does voltage drop across the component.
The V-I curve for some semiconductors features a region of negative slope. When the device is operating in this region, it exhibits negative resistance, which can be extremely useful when designing stable feedback systems.
What is the main purpose of building overhead transmission lines?
mainly it is built to transmit electricity for long distant and it's cheaper than underground cable
ahmed alyassi
adma-opco
abu dhabi
What is the difference between isolation transformer and ferromagnetic transformer?
An isolation transformer is usually a ferromagnetic transformer.
The question needs to be framed more usefully.
Delta Scuti is a giant star. It is part of the Scutum constellation. It is also known as a variable star because its brightness as seen from earth fluctuates.
Step-up transformers of the type you describe are three-phase transformers which, in the transmission system, are classified as 'power transformers'.
Why are printed circuit boards used when constructing an electronic circuit?
It has a number of purposes. It provides a solid surface to mount the other components onto. It creates the connections in a neat and organized way that would not be possible if you just soldered each component to the next one. It also maintains the spacing to allow heat dissipation.
Ohm's law: voltage is current times resistance
0.03 amperes times 1000 ohms = 30 volts.
What is the law of the curve for power against voltage?
P = I x E (where E is voltage)
so it's linear.
========================
The power dissipated by a component or circuit depends not only
on the voltage across the load, but also on the characteristics of
the load itself.
If the resistance/impedance of the load is constant, then P = E2/R so it's proportional to the square of voltage.
Explain how would you be an asset in this organization?
I would be an asset to this organization by giving my skills, keeping good relationship with co- workers, customers and work properly.
