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 is electrical energy per order?
It is a concept used to evaluate and compare the cost of different irradiation based water treatments. It is defined as the electrical energy required to reduce the concentration of the compound of interest in 1 m^3 of water by 1 order of magnitude.
Yes, this is in the realm of possibility and in fact happens. It will not be a dangerously high voltage induced into the fence but you will be able to feel it. Proper grounding of the fence will eliminate the condition.
What type of inductor is installed in a circuit to impede the flow of ac of a frequency?
A: The inductor is called a RF choke
How bar code reader update the database automatically?
A: A bar code are nothing but a series of numbers when it reads those numbers depending on the software and intention it can do all sorts of things.
Barcodes are different width lines that are coded into either numbers or characters. In a database you associate a specific encoded value to an item so that when it is scanned by Point of Sale (POS) scanners, the associated software can automatically change the quantity in the database and do various things like bill a credit card, automatically reorder the item and so forth.
There are different barcode standards and usually the database will also include the standard so that the reader and POS software can work properly.
overload heater is used to protect a large electric motor. If the overload heater get too hot from excessive current. its nomally-closed overload contacts wil open. interruptting the circiut of powe supply of motor
Does electricity shock you more when the voltage is lower?
The sensation from a shock is due to current flowing through your body, not the voltage. You can have a high voltage and low current and not get hurt. A Tesla Coil is an example. As the voltage gets lower your body still obeys Ohm's Law. Voltage = Current x Resistance. If the resistance of your body remains constant as the voltage gets lower, the current will be lower. However, there are many variables that determine the effect of a shock on your body. Variables include the type and amount of current (AC or DC) and the path the electricity takes through the body.
It is dc resistance, use to measure the rated current at primary and secondary side
The difference between a single phase and a three phase motor is the amount of power conductors that feed the device. As to the other part of the question a three phase motor will not start or run on single phase. The phase angles on three phase are 120 degrees apart on a single phase system they are 180 degrees apart.
Why does some power lines have red plastic balls attached to them?
That is to warn birds so that large flock of birds do not fly into the power lines. Also helicopters.
How can i calculate amperes for transformers?
Find the wire from the secondary of the transformer. If it's a step-down transformer the thicker wire is the secondary.
Measure its diameter in inches and calculate its cross-section area in square inches. The current rating for transformer wire is 1000 amps per square inch, or 1.55 amps per square mm.
Why does not it matter where you measure the current in a simple circuit?
The current measured at any point in a simple circuit will be the same because current is the measure of electron flow through a circuit. The current flowing through any branch of any circuit (or an entire simple circuit) will always be the same at any point.
Why input voltage is 1-5 volt?
Input voltage is zero-offsetted, such as 1-5 volts, 4-20 millamps, etc. in order to detect the condition of transmitter or connection failure. Otherwise, you might not be able to differentiate between instrument zero and instrument failure.
What is electrical resistance used in glass for?
High voltage transmission line insulator are also made of glass.
Where would you find or use an earth leak circuit-breaker?
Proper name is GFCI (ground fault circuit interrupter). It could be a breaker or receptacle.
It's used for wet location circuits, like bathrooms, kitchens, hot tubs, outdoor
How much does the lightest 75KW electric engine weigh?
Most of the weight is the battery pack, not the motor itself. In a Tesla Model S the weight is about 1,200 lbs, and about 30% of the total weight of the vehicle
Where can we purchase a tone generator?
Ex tech generators are the one we purchased . We got the product from amazon and there are other good brands too. The product also had good reviews which enabled to understand the utility and the efficiency of the product .you can even check in big electronic stores.
In general Electricity supply companies charge consumers for the amount of power that they consume in addition to the amount of energy they consume.
By power it is meant the rate at which they consume the energy.
If for example you have two consumers who both use the same amount of electricity in a month but one uses it over two days and one over the whole month, the one that uses it over the two days will be penalised in their billing because the supply company will need to install more expensive, higher capacity equipment to supply them.
The financial benefit of peak lopping is reflected in the billing by the supply company. there is a charge per unit energy in cents/kWh and a demand charge which is based on the maximum demand that is recorded for the billing period, this is in $/kVA (power) the much more expensive one is the demand charge so it is better to draw energy for longer periods of time at cents/kWh than to draw it quickly and pay a premium rate for the demand in $/kVA.
Peak-lopping refers to a situation whereby the consumer choses to cut the peak demand that they require in order to avoid paying the penalties associated.
There are various means of implementing peak-lopping measures. in some buildings the Building Management System will simply switch off items such as Geysers and certain Air Conditioning units when the building starts drawing too much power.
Other means of peak-lopping generally involve storing the energy in some way during times of low demand for use later when it is needed during times of higher demand. An example of such a solution would be to use electricity during the night to make ice in an insulated ice storage tank and use the ice during the day to cool the Air conditioning units. This would reduce the amount of power they require during the day when there is a high demand for electricity.
Why do you keep getting electric shocks off your cat?
static electricity of their fur, like when you rub your hands along the base of a trampoline :)
What is the wattage rating of a Somfy 12 volt motor model no ct32-rt-12?
Motor: 12v AMP usage: 1.2amp Watt: 12x1.2=14.4W
Can depletion mosfet act as enhancement mosfet?
It depends.
A depletion MOSFET can be used as an ehancemnet MOSFET when it is operated as an analog amplifier. However, a depletion MOSFET can't replace an enhancement MOSFET when it is operated as a digital switch.
When a depletion MOSFET is used as a digital switch, since the junction between source terminal and substrate must be reverse biased, the voltage of the source terminal of an N typde transistor must be tied to Vdd, and it is completely opposite to an enhancement MOSFET.
When a depletion MOSFET is used as an analog amplifer, the source terminal and the substrate are both at the same potential, just like an enhancement MOSFET.
