These are generally electrically powered.

* In powered vehicles, some form of transmission, usually electrically powered traction motors or a hydraulically powered torque converter

The railway uses three electrically powered trains, with a passenger capacity of 540 passengers per hour.

All stock used was electrically powered.

Large-scale petrol-mechanical and petrol-hydraulic models are available but unusual and pricier than the electrically powered versions.

In 1961 the American physicist Eugene Kunzler and coworkers at Bell Labs discovered that niobium-tin continues to exhibit superconductivity in the presence of strong electric currents and magnetic fields, making it the first material to support the high currents and fields necessary for useful high-power magnets and electrically powered machinery.

In the 1940s, the first electrically powered digital computers were created.

A small, electrically powered pump

Strictly the term refers to the pump itself, which is normally manually operated, though electrically powered and gas powered pumps are occasionally used.

* Åland islands: Thanks to a law revision by the Government of Åland concerning " small electrically powered vehicles ", the Segway and all other, mainly aimed to be one person electrical vehicles, are in Åland classified as bicycles since 14 March 2012.

The concept of electrically powered transmission of television images in motion was first sketched in 1878 as the telephonoscope, shortly after the invention of the telephone.

John Ericsson invented an electrically propelled torpedo in 1873 ; it was powered by a cable from an external power source, as batteries of the time had insufficient capacity.

The Nordfelt torpedo was also electrically powered and was steered by impulses down a trailing wire.

The filament, no longer electrically connected to the tube's electrodes, became simply known as a " heater ", and could as well be powered by AC without any introduction of hum.

The main components of the drive system of any electrically powered boat are similar in all cases, and similar to the options available for any electric vehicle.

Home incubators are boxes holding from half a dozen to 75 eggs ; they are usually electrically powered, but in the past some were heated with an oil or paraffin lamp.

As with all forms of electrically powered spacecraft propulsion, thrust is limited by available power, efficiency, and specific impulse.

The Magnetoplasmadynamic ( MPD ) thruster ( MPDT ) is a form of electrically powered spacecraft propulsion which uses the Lorentz force ( the force on a charged particle by an electromagnetic field ) to generate thrust.

Loaded cable is no longer a useful technology for submarine communication cables, having first been superseded by co-axial cable using electrically powered in-line repeaters and then by fibre-optic cable.

Smaller versions, for use in garages or small workshops, are usually electrically powered.

A civil defense siren ( also referred to as an air raid, civil defence, tornado, tsunami, fire, flood, weather, time, curfew, earthquake, storm, police, emergency, hurricane, or other outdoor warning siren / whistle / horn / alarm ) is a mechanical or electronic device ( modern-day sirens are electrically powered whether they are electronic or electro-mechanical ) for generating sound to provide warning of approaching danger and sometimes to indicate when the danger has passed.

Power windows were available on the 98 models, as was two-speed electric windshield wipers with electrically powered windshield washers.

Some match-like compositions, known as electric matches, are ignited electrically and do not make use of heat from friction.

Most vapor-compression heat pumps use electrically powered motors for their work input.

In addition the mirror may heat simply because the edge of the diode laser — which is electrically pumped — is in less-than-perfect contact with the mount that provides a path for heat removal.

It is electrically conductive, can be easily machined, and dissipates heat well.

It can be generated electrically by infrared lamps, or can be absorbed from sunlight and used to heat water.

In the natural sciences, the term diathermy means " electrically induced heat " and is commonly used for muscle relaxation.

Small amounts have begun to be sold as thermal grease to computer enthusiasts ; it has a much better heat conductivity compared to more standard thermal pastes ( allowing hot chips such as CPUs and GPUs to run several degrees cooler ), but needs to be applied more carefully than the electrically isolating standard greases, since spills can cause short circuits.

He was given diathermy treatment (" electrically induced heat " used for muscle relaxation ) in the clubhouse by Red Sox trainer, Doc Woods.

Some of this heat is produced electrically because it is easier to control, but electrical heaters are far less efficient than a RHU because RHUs convert only a few percent of their heat to electricity and reject the rest to space.

Heated bags supply added heat through insertion of externally-heated disks, electrical heating elements, or pellets heated by induction from electrically generated magnetic waves.

It can be placed directly on the source of heat or it may be electrically heated.

In the natural sciences, the term " diathermy " is understood to mean " electrically induced heat " and is commonly used to cause muscle relaxation.

The thermoelectric converters ( identified as the long white " apron ") were doped silicon germanium materials thermally coupled but electrically isolated from the NaK heat transfer medium.

All neurons are electrically excitable, maintaining voltage gradients across their membranes by means of metabolically driven ion pumps, which combine with ion channels embedded in the membrane to generate intracellular-versus-extracellular concentration differences of ions such as sodium, potassium, chloride, and calcium.

These include ion channels that permit electrically charged ions to flow across the membrane, and ion pumps that actively transport ions from one side of the membrane to the other.

* Electric Submersible Pump, an artificial lift system that electrically drives multiple centrifugal stage pumps to lift oil and water from wells

# powering the a / c, power steering, and other auxiliary pumps electrically as and when needed ; this reduces mechanical losses when compared with driving them continuously with traditional engine belts.

Electricity outages caused by ashfall can also disrupt electrically powered pumps if there is no backup generation.

The pumps are typically electrically powered and referred to as Electrical Submersible Pumps ( ESP ).

Fixed Cornish beam engines pumped out the Great Spring and other sources of water until the 1960s, when they were replaced by electrically powered pumps.

Another is that fuel pumps must be capable of operating with electrically conductive ethanol instead of non-conducting dielectric gasoline fuel.

The hydraulic power to move the bridge is derived from electrically driven pumps.

A system may be broken up into individual heating zones using either multiple circulator pumps or a single pump and electrically operated zone valves.