Word Finder - volts

definition

In the International System of Units, the derived unit of electrical potential and electromotive force (voltage); the potential difference across a conductor when a current of one ampere uses one watt of power. Symbol: V

definition

A circular tread; a gait by which a horse going sideways round a centre makes two concentric tracks.

definition

A sudden movement to avoid a thrust.

Thus at 4000 metres the potential seems of the order of 150,000 volts.

He supposes the field near the earth to be ioo volts per metre, or 1/300 electrostatic units.

The subjection of the core to a hydraulic pressure of four tons to the square inch and an electric pressure of 5000 volts from an alternating-current transformer has been adopted, by one manufacturer at least, to secure the detection of masked faults which might develop themselves after submergence.

Electrostatic voltmeters are now almost entirely used for the measurement of high voltages from 2000 to 50,000 volts employed in electrotechnics.

The electromotive force of each cell is i 07 volts and the resistance 3 ohms. The Fuller bichromate battery consists of an outer jar containing a solution of bichromate of potash and sulphuric acid, in which a plate of hard carbon is immersed; in the jar there is also a porous pot containing dilute sulphuric acid and a small quantity (2 oz.) of mercury, in which stands a stout zinc rod.

These spark balls are connected either to the secondary circuit of an induction coil I, or to that of an alternating current transformer having a secondary voltage of 20,000 to 100,000 volts.

The arc is produced by leading a current of about 5000 volts equatorially between the poles of an electromagnet; this produces what is practically a disk of flame, 62 ft.

The Siemens and Halske ozonizer, in form somewhat resembling the old laboratory instrument, is largely used in Germany; working with an alternating current transformed up to 650o volts, it has been found to give 280 grains or more of ozone per e.

For this purpose the ohmmeter is provided with a small dynamo D, contained in a box, which produces a continuous electromotive force of from 200 to 500 volts when the handle of the instrument is steadily turned.

We then know that the fall of potential down the 2000 divisions of the fine wire must be exactly 2 volts.

Thus, for instance, if an experiment were made with a Leclanche cell, and if the balancing-point were found to be at 1500 divisions on the scale, the electromotive force would be determined as I 50o volts.

By such an arrangement the potential difference can be measured of any amount from o to 1.5 volts.

We can thus measure as described the drop in volts down a known fraction of the whole high resistance and therefore calculate the fall in potential down the whole of the high resistance, which is the potential difference required.

At first the current is 3000 amperes at 220 volts, increasing to 9000 amperes at 20 volts after 20 hours.

For this purpose a resistance, say, of one ohm is placed in series with the lamp and a resistance of 100,000 ohms placed across the terminals of the lamp; the latter resistance is divided into two parts, one consisting of loon ohms and the other of 99,000 ohms. The potentiometer enables us to measure therefore the current through the lamp by measuring the drop in volts down a resistance in series with it and the potential difference of the terminals of the lamp by measuring the drop in volts down the tooth part of the high resistance of 100,000 ohms connected across the terminals of the lamp.

When so made, the cell has an electromotive force of 1.072 volts and no sensible temperature variation.

This movement is resisted by the torsional elasticity of the suspending wire, and hence a fixed indicating needle attached to the movable system can be made to indicate directly on a scale, the difference of potential between the terminals of the instrument in volts.

For such purposes the whole of the working parts are contained in a metal case; the indicating needle moving over a divided scale which is calibrated to show directly the potential difference in volts of the terminals of the instrument.

Electromagnetic voltmeters may therefore be thermal, electromagnetic or electrodynamic. As a rule, electromagnetic voltmeters are only suitable for the measurement of relatively small potentials - o to 200 or 300 volts.

If the wire has a resistance of 300 ohms and is connected to two points differing in potential by 100 volts, the instrument passes a current of one-third of an ampere and takes up 33 watts in power.

The transformer working from a public supply should give about 6000 volts on open circuit, although when the electric flame is established the voltage on the platinums is only from 1600 to 2000.

After the discharge was once started, the difference of potentials at the terminals of the tube varied from 630 volts upwards.

Cryolite is not a safe body to electrolyse, because the minimum voltage needed to break up the aluminium fluoride is 4.0, whereas the sodium fluoride requires only 4.7 volts; if, therefore, the current rises in tension, the alkali is reduced, and the final product consists of an alloy with sodium.

Each generator can develop 5000 H.P. at a potential of 2200 volts, and is driven by three horizontal double turbines on the same shaft; when working under a minimum head of 32 ft.

They drive electric generators, and the current so produced is taken at a pressure of 22,000 volts on overhead wires a distance of 35 m.

The Wire Had A Length Of 760 Cms., And The Potential Difference On Its Terminals Was Nearly 30 Volts.

The energy stored up in the jar in joules is expressed by the value of CV 2, where C is the capacity measured in farads and V the potential difference of the coatings in volts.

At one end is an insulated plate P kept at a potential of 200 volts or so above the earth by a battery.

The formula indicates that the sensibility of the instrument should increase with the charge of the Leyden jar or needle, whereas Hopkinson found that as the potential of the needle was increased by working the replenisher of the jar, the deflection due to three volts difference between the quadrants first increased and then diminished.

He found that when the potential of the needle exceeded a certain value, of about volts, for the particular instrument he was using (made by White of Glasgow), the above formula did not hold good.

In this case the deflection of the needle was practically quite constant when its potential varied from to 3227 volts.

The needle is charged to a potential of 50 to 200 volts by means of a dry pile or voltaic battery, or from a lighting circuit.

But if the difference of potential exceed a small amount (i or 2 volts), the jets instantaneously coalesce.

The Peltier coefficient may also be expressed in volts or microvolts, and may be regarded as the measure of an E.M.F.

Currents from the ten-thousandth of an ampere to ten thousand amperes, electrical pressures from a minute fraction of a volt to 100,000 volts, come within the range of his instruments, while the private consumer of electric energy is provided with a meter recording Board of Trade units.

Retest with multi meter Meter reads 15- 20 volts alternator is charging too much, regulator is not working properly & needs replacement.

At 7 volts, the nominal voltage of the sheathed-element glow plugs is significantly lower than the 12 volts of the main electrical circuit.

However, his design uses a supply voltage of 1500 volts, in order to force many kilowatts of power into the resonator.

The pulse produced in the modulator has a voltage greater than 10,000 volts and lasts about 1 microsecond.

Electricity 220 volts AC, with standard Continental European-style two-pin plugs (coming from the UK, an adaptor will be required ).

We were planning as the next stage to run up the motor generator using a three phase rectifier to provide about 550 volts.

A master showman, he often started his performances with a demonstration of his electrical powers by passing 30,000 volts through his body.

Underground cables carry electricity at 33,000 Volts from La Collette power station to the five primary substations on the island.

The electrical supply on the islands is 240 volts ac.

With the fan running at 7 volts the max temp I have under load is 45 degs and that's in a warm room.

Numatic UK have produced this specialist hazardous dust vac in 240volts or 110 volts.

Only where overhead feeder lines occur, are electric fields likely to exceed a few volts per meter.

This link enables or disables this function by applying 0 volts or 5 volts to pin 30.

The Gilkes Vortex turbine was manufactured in Kendal and drove a 6kw dynamo generating 110 volts.

Electricity Overhead lines carry 25,000 volts AC, conductor rails carry 750 volts DC.