Electronics Engineering

Their relationship is only dependent on the voltage lost across that resistor; voltage equals resistance times current, so increasing the current for a given voltage will require a decrease in the resistance, and vice versa.

i think it is symbolised with a capital 'e' or 'v' :P hope this helped! :L:L

An electrician, it is an electronic measuring instrument

One can purchase laser diode modules on select places around the Hong Kong. OPELUS is the best place to purchase laser diode Modules, Infrared Laser Module, Green Laser Module etc.

It isn't. If you're using superposition, you open circuit current sources and short voltage sources; this is because the current source declares the current that will be flowing through that branch.

Both current and voltage sources have a finite internal resistance.

In a passive circuit, the current will decrease.

In an active industrial circuit, it will usually decrease.

In a theoretic manner - it is an unknown.

The advantages of an analog watch over a digital watch are that analog watches can be more durable in some facets, than a digital one. Many watch enthusiasts also feel that analog watches are more aesthetically pleasing than digital watches.

Sky plus or sky+ is a personal video recorder service for the British Sky Broadcasting in the United Kingdom. Its functions include recording, pausing and even instantly rewinding live TV.

Generally process control devices use analog signal. Normally in an industrial automation setup, 0-20 mA (mili amp) or 4-20 mA or 0- 10 Volts are used. These signals are used for both providing control output and to provide feed back signal (say to a PLC (programmable logic controller) or DCS)

Example for a control out put is a motorized damper operated by 4 - 20 mA signal. PLC provides 4-20 ma signal. Example of a feed back signal is 4 - 20 mA signal from temperature transmitter, measuring a liquid temperature to PLC as input.

Answer: At the zero end, the measurement is more reliable, because all materials have some conductivity, so even the plastic grip of a meters probe, with both your hands making contact with both the probes, will give you some reading at infinity side of the scale.

LOw voltage shocks aremore dangerous than high voltage shock because at low voltage the electrical source pumps a lot of energy through the body for a longer time damaging vital organs. where as high voltage shock cause a layer of burnt insulting tissues which limits the current that flow through the body there by causing lesser damage.Also low voltage shock tend to 'stick' to the body while High voltage shock tend torepell the body causing superficial burn close but not close enough at low voltage your body react NOT with extreme convolsions therefore you are there to the end. at hi voltage your body will widly shake maybe to the point of disconnection. it is not the voltage that kills but ruther the current. a 2 v battery can killyou if it gets to your blood supply [SODIUM] METAL GOOD CONDUCTOR A 'D' CELL CAN DO IT ON A SHORT IT CAN DRAIN 2 AMPS ENOUGHT TO KILL ANYBODY.

In a dry cell, the carbon rod is the positive terminal, or anode.

Forward biasing of diode means applying positive potential to anode and negative potential to cathode in this case these points are happen in silicon diode-

1> Depletion Width Reduces

2>Voltage across junction is fixed at 0.7 volt

3> diode behave like short circuit (low resistance up to 400 ohm.)

4> it rectify the applied A.C signal.

ANSWER: It does not have fix .7 volts it has however an exponential VI curve which engineering take for practical as being .6 to.8 volts being forward conducting the voltage chosen depends on the actual current flowing a rectifier may have .8 volts while a signal diode may have .5 volts depending on the current flow. The resistance is just VI drop the impedance is 26mv/i

Difference between field controlled and armature controlled is that field control is open loop and armature current is closed loop.

The wave with the maximum RMS value, in comparision with the peak value, is the square wave.

A wind turbine generates electricity by converting its kinetic energy into electric energy. The kinetic energy of the wind transfers to the turbine, and the kinetic energy of the turbine converts to electric energy as it spins within an electromagnetic field.

• Meddle
• meddle spoon
• gold/silver

A switch is a device which can be used to make or break a circuit.

If that circuit carries a voltage which would be dangerous to people or animals then the handle of the switch must be made of a good insulator and the rest of the switch must be well shielded to stop anyone - or anything else - from touching any live wires.

If you get a chance to visit a science museum ask them to show you a "knife switch". Another place to see one is the Physics Lab at your local college or high school. Once you have seen a knife switch you will understand exactly how a basic switch works. It's quite simple really

The main advantage of using ac is that you can step up and step down the voltage by means of a transformer,since transformer works only with ac.

another thing is that if dc power is used for transmission,then the power loss associated with t will demand the use of transmission lines which are very thick(have a larger cross section)..for long distance transmission this may lead to the requirement of power lines with impractical dimensions.

Voltage is a general term. VAC & VDC are specific terms.

"RADAR" is an acronym for RAdio Detection And Ranging, which is a broadcast beam and receiver, used primarily to detect the objects (such as aircraft) which are at a distance that cannot be observed visually. It is one of the applications of microwaves. Radar is used along with advanced transponder technology in air traffic control. Smaller radar units have been used to measure the speed of cars and trucks on highways, using the Doppler effect (frequency shift for moving objects), although these have mostly been replaced with laser devices using the same principle.

Radar is based on the principle that the RF signal at a high frequency is reflected back by reflective objects, typically large objects made from metal, composites, or rubberized materials. The distance between the radar antenna and the target can be measured by the delay time (microseconds, millionths of a second) between the broadcast and detected return.

The reflected signal is known as a 'radio echo'. The time taken by the signal to travel one nautical mile is 6.18 micro seconds, so it requires 12.36 microseconds to reach and return from an object one nautical mile away. The formula to determine the distance of the object 'S' is S=T/12.34 where 'T' is the time taken for the transmission and reception of the signal.

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Radar is an acronym for RAdio Detection and Ranging. It uses RF transmission (radio frequency) in the microwave band to detect and range any detectable target within its range. It is an "active sensor" which emits RF waves that bounce off a target and are detected when the wave is received back. The time delay between transmission and detection produces its range given that the RF wave propagates at a uniform speed.

Modern "stealth" aircraft use RF scattering, along with microwave-absorbing materials, to avoid detection by traditional radar. Some advanced planes have radar reflection signatures so low that they are less than those of small birds.

It depends on the ratio of turns from primary to secondary.