Electrical Engineering

Watts = Volts X Amps. Thus watts and volts are related but neither is higher in energy. Energy is measured as power times times, in other words watts times seconds (called Joules) or kilowatt-hours (called Units).

No, the voltage is determined by the technology of the cell:

Ni-Cad 1.2 v

Alkaline 1.5 v

Zinc chloride 1.6v

Lithium 3 v

Dress codes are usually set by the employer, not by standards of the profession,

and imposed upon the place of work and everyone in it.

The only exception I can think of right now is in the case of the clergy.

Call a qualified electrician.

If you are wanting to test a power circuit (120/240) at your home, there is no way to teach you on-line all the electrical safety (NFPA 70E) that you would need to know to use a multi-tester safely!

Electricity is DANGEROUS!!

Call a qualified electrician.

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Read the instruction manual!

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Depends on what you're using it for, to read voltage supply SWITCH ON meter, set it to volts (600volts for testing on for 230/400v supply) (200v for anything below) place red lead to live and black lead to neutral, to check continuity set it to ohms....actually to be honest im not going to go much further with answer, because you shouldn't really be near electricity if you had to ask that question!!!!!!!!!!!!!

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work AND
always use an electrician's test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure the circuit is, in fact, de-energized.

It is not intended for continuous working mode. So most crane works with a 40% duty cycle full-load factor. 1. lowing the hook, 2. lifting the load, 3. carrying the load, and 4. lowering the load. dixon_robert@yahoo.com I am presently researching on the most suitable motor for 35,000Kg/ 55KW full-load with vector control technology. Looking for help too....

the maximum permissible speed above which the generator is likely to damage or may cause circuit to fail.

yes.

If you use wire of certain resistance first the get the result and if u use other wire which is of more or less resistance then the voltage drop in the wire changes so the output also changes.

Yes it does, but the difference may be inconsequential. The specific circuit in question and type of wire should be included for a specific answer.

Ohms law is E=IxR. Kirkoffs law has to do with the distribution of voltage and amperes. The amperes in a series circuit is always the same and the voltage changes. In a parallel circuit the voltage is always the same but the amperes change. You can find all the values in a circuit with limited information using these two laws.

A milliammeter is an electrical measuring instrument used to measure small electric currents in the milliampere range, typically from 1 mA to 1000 mA. It operates on the principle of electromagnetic induction or shunt resistance, providing a visual display of the current flow through a circuit. Milliammeter readings are essential in applications like electronics, telecommunications, and laboratory experiments where precise current measurement is crucial.

The short answer is: It's illegal.

Almost universally, the power grid is the property of the power company, and is regulated by the utility. It is illegal to connect a generating device to the power grid without the express approval of the utility. It is highly unlikely that anyone needing to lookup the answer here could ever attain such approval. Any installations that are approved for power grid connection are connected by qualified electricians that have been certified for the connection of generating equipment by the utility.

To answer the more general question of how generators become synchronized, small generators are basically forced into synchronization by the large generators on the grid. All generators connected to the same grid also utilize throttling devices to adjust their frequency and phase to properly match the grid, so that they are not a constant strain on the grid. Large generators are synced before being connected to the grid.

The oil level indicator in a transformer is used to show the oil level.

a variable resistor is often called a control potentiometer ,

and would be used to supply a set voltage depending on the position of the wiper contact on the resistor assembly .

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an example would be a speed control device on a motor , including battery drill drivers , a mini hand held drill tool for use in craft projects , a volume control slide/ positioner , which controls the amount of signal and hence the volmue at whic music is played on a music system throu speakers.

it could also be used in lighting control circuits , such as dimmer controls .

where it sets the level of light output by varying the applied volatge to the lamp

in full wave bridge rectifier, the input and out put voltages are same but in case of two diode rectifier the input and output voltages can be different as per requirement a there is a transformer in the circuit.

The former is lighter and the later is heavier.

All are fossil fuels which means that they were formed from plants and animals from millions of years ago.

Coal is a solid. It is mostly carbon. It is made from mostly plant materials.

Oil is a liquid. It is a mixture of hydrocarbons. It is more animal materials. Its composition is different depending on where it is found.

Natural gas is a gas. It is mostly methane, CH4.

• avoid crosstalk
• safety, a short between them could cause hazardous voltages where none are expected
• protect low voltage equipment from damage
• etc.

The kVA (kilovolt ampere) is the vector sum of real + reactive power in an AC circuit. The kW (kilowatt) is a measure of the real power in that circuit. Inherently, a circuit will not require only real power, but also reactive power. Thus kVA is a more meaningful value when considering sizing equipment (such as transformers, bus work, breakers, etc.) because this equipment must be sized for the total current drawn, not just the real power usage.

The formula you are looking for is W = E(squared)/R, W = Voltage (squared) divided by Resistance.

Bundled conductors are used to reduce the effect of corona. As in place of a single conductor. two conductors are used in parallel the voltage gradient build up is less and thus the ionisation of the surrounding air is decreased. Therefore the effect of corona is reduced.

The level of current you are most likely to be in danger of death depends on the path of current flow through your body, and on the frequency of that current.

With sufficient current, there is always the danger of burns, usually on the surface of the skin, which is particularly an issue with high voltage.

The most sensitive organ is the heart. Interestingly, frequency is a big factor. If you were to apply DC, it would simply stop and then start, assuming you did not apply enough to cause internal damage. If you were to apply AC, with the right frequency, and with just the right current, you can do irreversible damage to the heart's pacemaker, the sino-atrial node. The heart would then enter irreversible ventricular fibrillation, and you would die.

It turns out that the most dangerous current is about 1 ma, at 60 hz, applied directly across the heart. Depending on external skin resistance, this translates to around 120 AC, 60 hz, applied from hand to hand, with the current path through the chest.

Primary utility wiring uses an ACSR cable, (Aluminium Conductor Steel Reinforced). The multiple strands of aluminum wires are wound around a center steel cable. The steel center is used to allow longer spans between poles or towers. Ordinary aluminum wire can not be long spanned because its weight would break the wire. All other high voltage wiring is done with different insulation thicknesses dependant upon what the voltage is. The higher the voltage the thicker the insulation. Insulation of the wires stops when the conductors carry kilo voltages usually above 5000 volts.

It's when there is a supply with a given voltage, and then a piece of equipment is fed through a long piece of cable so that the voltage supplied at the equpiment is somewhat less. The voltage drop is the amount of reduction caused by the resistance of the cable. Voltage drop should be less than 5% of the nominal voltage, e.g. 12 v for a 240 v system.

The utility supplier benefits by making more efficient use of generating facilities and transmission systems. This means they can serve more customers with the same equipment, or build smaller facilities to serve the same number of customers.

Consumers benefit by lowered demand charges on their electric bill. They may also benefit by requiring smaller utility transformers, which they may have to pay for.