Saturday, August 29, 2020

How to make symbols with keyboard

  


 

>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!

 >> EEW's Mission:
Our mission is to be the leading provider of scientific information on education, power and electricity in general. We write, we share and spread knowledge. You're welcome to read, write and contribute to EEW in any way!

Friday, August 28, 2020

Random Access Memory (RAM)

  


 

>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!

 >> EEW's Mission:
Our mission is to be the leading provider of scientific information on education, power and electricity in general. We write, we share and spread knowledge. You're welcome to read, write and contribute to EEW in any way!

Thursday, August 27, 2020

More details

  



>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!

 >> EEW's Mission:
Our mission is to be the leading provider of scientific information on education, power and electricity in general. We write, we share and spread knowledge. You're welcome to read, write and contribute to EEW in any way!

Wednesday, August 26, 2020

Types of DC Generators

  








 

>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!

 >> EEW's Mission:
Our mission is to be the leading provider of scientific information on education, power and electricity in general. We write, we share and spread knowledge. You're welcome to read, write and contribute to EEW in any way!

Solar Wiring Diagram

  

 

>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!

 >> EEW's Mission:
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Tuesday, August 25, 2020

Fire Alarm Wiring Diagram

  

 
>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!

>> EEW's Mission:
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Monday, July 6, 2020

Check the answer

  

Device that consume power such as electrical motor is rated in kW because it power factor is known meaning it capacity at which it will operate
Mathematically; KVA = KW at unity p.f
While
Device that supply power are rated in VA or KVA such as transformer because we don't know the power factor of the load it will supply power to.
Mathematically; KVA. = KW/p.f
The load for the transformer is unknown as it could be capacitive , resistive and inductive where the power factor is variable , so we use the apparent power ( S ) while the motor has inductive resistive load with fixed Power factor, so the power is known ( P= S x PF ) where the PF ( power factor = cos G ), G is the angle in degrees.
Finally, Which electrical machine is produce the power there we used KVA unit.
Which electrical machine is observed the power there we used KW unit. KW / KVAR = KVA

Which Diode Arrangement Will Supply a Negative Output Voltage?

  

To answer this question. we have to mention that the best answer is C. This is mainly because it will give out a negative. The main reason is mainly based on the diode arrangement. In addition to this, only A and C have correct configurations. However, C will give you Negative.

 >> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!
>> EEW's Mission:
Our mission is to be the leading provider of scientific information on education, power and electricity in general. We write, we share and spread knowledge. You're welcome to read, write and contribute to EEW in any way!

Start Stop 3 Phase Motor Starter Wiring

  

>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!

 >> EEW's Mission:
Our mission is to be the leading provider of scientific information on education, power and electricity in general. We write, we share and spread knowledge. You're welcome to read, write and contribute to EEW in any way!

Friday, July 3, 2020

Thevenin’s Theorem. Step by Step Procedure with Solved Example

  

Cooling capacity means the amount of heat energy that can be pumped from inside of the room (usually low temperature) to outside of that room(usually high temperature). This can not happen naturally as heat energy can flow only from high temperature to low temperature.
To make it happen, external work has to be done on a system to transfer heat from low to high temperature. This work done is mechanical form of energy which is equal to the electrical energy consumed. Hence, mechanical power=electrical power(not considering efficiency of the compressor etc.)
This electrical power(such as 1875 W) is consumed to pump 5275 W of heat out of a room.
Net heat dissipated by the system is only the energy consumed in form of electrical energy; but, energy emitted outside the room in an hour = 1875+5275 = 7150 Watt hour by consuming 1875 Watt hour of electrical energy.

Why AC Rated in Tons, Not in kW or kVA?

  

AC (air con) is rated in Btu... Btu/hour or Watt which is J/s (joule/second)...the conversion is 1W=3.412 Btu/h, 1Btu=1055J...British Thermal Unit = BTU
The usage of the ton measurement of cooling went out many years ago, not heard that used probably in 20 years. This is mainly because it is rated base on the cooling capacity. no matter how efficient you build it. In addition to this, Btu/hr, tons, and kW are all different units of heat transfer. Just like degrees C and F are units of temperature, and metres and feet are units of length.
Finally, the main reason is that it is really a long story. However, I will give simple explanation. For example, we rated AC in tonnes because how much ice is required to cool 1deg surrounding temperature. That is why we rated it in tonnes.

How Much Watts Solar Panel You Need for Home Appliances?

  

You would need an inverter of 24V, 5 kVA capacity with an inbuilt 100A charge controller. If you would like to run full load (2500W) on a backup of 3 hours, you would need four no.s of 12V, 200Ah batteries. A series parallel combo giving you an output of 24V, 400 Ah. Two each in series, and the two sets in parallel.
As it looks like an off grid connection. You need to connect all the panels in parallel using branch connectors and ensure that the final panel output Voltage is 24V. Do not worry about the current. The charge controller will handle it. According to your load of 500W you need at least 3 solar panels of 265 W or any other combination of solar panels providing a generation round about 1000W, for this purpose you need an inverter of 1.2 KW at least. For backup, you need at least 2 dry gell batteries of 100 AH, it will give you a backup of almost 4 hours in case of fully charged.

Japanese Lace Bra Face Masks Sold Out Moments After Going On Sale

  

A bra-cup face mask memes surfaced online and went viral but a Japanese company decided to make them a reality and they sold out almost instantly.Atsumi Fashion, an apparel manufacturer that specialises in women’s underwear decided that applying the same design to face masks wouldn’t be such a bad idea.


The company promoted the face masks by sharing a photo of model and TV personality Aya Kondo wearing a lace bra face mask. The former “Terrace House” cast member came by to visit the store, and wore the lace bra mask. Soon after, a whole collection of bra face masks went on sale at 1,490 yen (N5600) and sold out minutes after it became available.

>> EEW's Vision:
Electrical Engineering World is the worldwide community with members engaged in the electrical power industry. Mission // ENERGY & POWER FOR ALL!
>> EEW's Mission:
Our mission is to be the leading provider of scientific information on education, power and electricity in general. We write, we share and spread knowledge. You're welcome to read, write and contribute to EEW in any way!

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