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How does single phase alternator differ form a dc ganerator?
Single phase alters from positive to negative at 50 (50hz) or 60 (60hz) times per minute. While in dc it does not vary but stays at a constant positive phase.
4 what is the name of the circuit that adds a positive or negative dc voltage to an input sine wave?
This DC voltage is called the DC offset. Any decent signal generator will be able to add DC offset to the signal it generates. If you don't have one, simply connect a DC voltage to your signal.
Where would DC be used instead of AC?
DC is used for extra-high voltage transmission systems, as there are less losses with DC than with AC, and no synchronising problems.
What device used to increase or decrease DC voltage?
A DC-to-DC converter is the general term for a device that changes DC voltage at one level to another.
What happens if the positive DC voltage is replaced with a negative DC source?
A negative DC source could be connected in such a way as to act as a positive DC source. I'm not sure why you would want to flip it - supplying power "the wrong way" could cause equipment failures, protective systems (such as fusing) to not provide protection, and general other bad things.
What color is green positive or negative for DC?
green is ground regardless of ac or dc
In dc electric Which wire is positive?
Brown
What color usually represents positive in electricity?
If it is DC then red is positive and black is negative.
What is ESP in a power plant?
The full form of ESP used in power plant is Electro static precipitaor.
Difference between general English and esp?
general English is used as a universal language, and ESP is an English used in a specific purpose or in a specific fields.
How do you get -48v DC?
In a 48V DC system you ground the positive to 0V so the live wire will be -48V.
Why are there positive and negative wires when stimulating nerves?
The most likely explanation is that the equipment used to stimulate the nerves uses a DC voltage to do so.
Trans former can not run with ac why?
It does A transformer is an electrical device used to convert AC power at a certain voltage level to AC power at a different voltage, but at the same frequency. Normal supply DC (Direct Current) won't work without some changes to how it travels. The DC is turned on and off quickly in the primary coil, and this action will allow the pulsating that DC in the primary to drive the secondary transformer. Remember AC alternated between a positive currect and a negative current where Dc is positive then drops to zero then back to positive
What is a rectifier diodes?
It's an electronic component used to turn AC into DC. But it'won't be pure DC w/o some further processing. It is basically a semiconductor meaning will pass current one way only. Electrons will flow from positive to negative. Therefore Direct Current or DC as opposed to AC alternating current meaning positive and negative current flow. there is no such a thing as pure DC by adding a capacitor it can approach pure DC but mathematically speaking it is impossible to achieve.
What are the applications of rectifiers in use?
A bridge rectifier, is a group of rectifiers (4 in a single phase) wired so that each half of an AC current is passed to respective positive and negative lines of a DC output. It provides full wave rectification of AC into DC.
Why dc source is used for dc supply?
it is only work on it so that used
What DC motor is used for traction?
dc series motor is used for traction...
