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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
How to calculate the best wire size to use with a 10-32 UNF-2A thread?
10-32 unf-2a
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The wire size does not need to be calculated. Use a wire terminal end that crimps to the wire. These terminal end come in various wire sizes and bolt hole sizes. Pick the correct end for the wire size you are using and then in that wire size range, pick the correct bolt hole size that fits the bolt.
Why and how test equipment is calibrated in electionics?
Test equipment is calibrated against a standard of some sort that is stable. In many cases these standards are traceable to the standards at the National Institute of Standards and Technology (NIST) in Maryland.
What is the meaning of stacking factor of a transformer?
it s the ratio of net cross section occupied by the magnetic material to the gross cross section of the core
generally, its value s between 0.5 to 0.95
Energy is constant, it cannot be created or destroyed; it simply changes form. Therfore, this electrical generator is impossible. The best efficency is approx. 30%. The other 70% of theenergy comes out as usless vibration, sound or light. The generator mentioned in the question would gain energy from nowhere, in other words, it's science fiction.
If a 50 amp fuse rated 32 volts is used in a 12 volt circuit at what amperage will it fail?
The fuse will fail at 50 amps regardless of which voltage you use.
What generates heat when the motor is running?
The frictional losses and the resistive losses generate heat in a motor
Why stop button always have NC contact?
When the contacts are Normally Closed (NC) the stop button is "in series" with the supply voltage. By activating the STOP function the contacts open interrupting the flow of current.
Can inductive reactance be in kilo ohm?
Yes. Inductive and capacitive reactance is measured in ohms, and it is entirely possible for reactance to be greater than 1,000, or even 1,000,000, ohms. It all depends on frequency.
How do you calculate the resistance of a heater element that's uses 220v and draws 11amps?
The equation you are looking for is R = E/I.
Why do LNB's have to be mounted close to the satellite dish?
The LNB takes the signal reflected off the dish, sends that signal through the coax cable to the receiver, where the receiver decodes the signal unlocking the channels you subscribe to.
Is 3 phase power equal to 3 times the single phase power?
Single phase has two line voltage wires, separate from each other; three phase power has three line voltage wires, actually saving more energy and thus money.
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The difference is that the power is transmitted divided into 3 parallel lines with the wave forms 120º apart. Energy saving is achieved by using very high transmission voltages hence low currents, feeding step-down transformers in the users' locality.
its having a girlfriend that's a magnet.................................................
Norton's theorem is the current equivalent of Thevenin's theorem.
The experiments of Georg Ohm set the foundation for this law, which is also known as Ohm's Law.
A triac is a high voltage AC solid state relay it is switched on by applying a dc at the gate it can't be used to switch DC because it stay on while current is flowing even when the gate is low but with AC the current stop flowing when the cycle go zero and will switch of if the gate is low
Sources with different voltages should never be connected in parallel, you would have a difference of potential. Any time you have a difference of potential connected together you will have sparks, which could cause the batteries to explode.
How does a remote change a channel?
Pushing a button to change the channel on a remote control begins a process that causes the remote to carry out the command. It works something like this:
- You want to go to channel 13 and push these buttons on the remote control. This causes it to touch the contact beneath it, and this completes the "channel change" circuit on the integrated circuit board, which detects this.
- The integrated circuit then sends the "channel change" command to the LED (Light-emitting diode) at the front of the remote. [LEDs are able to transmit visible, ultraviolet, and infrared waves and are very useful across a variety of disciplines.]
- The LED sends a series of light pulses which corresponds to the numerical code that indicates which channel the TV should switch to.
(These numerical codes, also called binary commands, are each seven digits long. Each different command or number has a different binary command. For instance, on Sony TVs, the "volume up" command is 001 0010 while the "change to channel 13" command would read like this: 000 0000 000 0010 (there are 14 digits because the channel you want has 2 digits and each digit has it's own binary command).
On the TV set, the infrared receiver picks up the signal sent from the remote control and converts the light pulses back into the electrical signal. This signal is then passed to the microprocessor, which completes the command of changing the channel.
Is your power into motor equal to your power out of motor at no load?
For a motor's output power to equal its input power, the motor's efficiency must be 100%. As no machine, particularly a rotating machine, can possibly achieve 100% efficiency, there is no condition under which its output power can ever match its input power.
When did shuttle Columbia disintegrate?
Space shuttle Columbia disintegrated on February 1, 2003, during reentry due to a failure of the Thermal Protection System tiles caused by damage from a piece of debris from the external fuel tank during launch. The entire shuttle and all seven crew members were destroyed. May they Rest in Peace: Rick D Husband, Commander; William C McCool, Pilot; Michael P. Anderson, Payload Commander; Ilan Ramon, Payload Specialist; Kalpana Chawla, Mission Specialist; David M Brown, Mission Specialist; and Laurel Clark, Mission Specialist.
What is zero sequence currents?
Zero sequence is part of symmetrical components; it's a way of looking at three phase power that simplifies the math involved. In general zero sequence current is synonymous with ground fault current.
How much noise is generated by a standard gas generator?
A standard gas generator is generally much quieter than other types of generators. However, a major drawback is the price and cost of installation of a unit.
What is the meaning of captive power plant?
1. Meaning of Captive Power Plant Captive Power Plants are power plants including Generation Sets, normally established by an industry to meet its own requirements.
