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Q: Why is the positive earthing use in dc system?
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Why negative control is adopted in DC system And why DC circuit breakers are kept at the negative side?

The answer is: They are not. Whosoever told you that is off his meds. Alternatively, in some special applications there may be a reason for it. Many DC systems use a common ground where the loads are encased in the ground (like starter motors). Thus all breakers are positive, but some don't. If the loads don't care about polarity and the positive and ground are not common (like with a metal chassis), positive and negative is irrelevant.


Difference between ac and dc bridge?

DC Bridge... We use DC supply, Detector is also a DC current detector and we use only resistive components no need for wegner's earthing device balancing time is comparatively less.. where as in AC bridges opposite of above. i.e. AC supply, AC current detector resisitive+ reactive componants need for wagner's earthing device and balancing time is high as we use AC supply..


How do Impressed Current anodes work?

i dont know use rectifier just invert ac to dc and supplied to anodes positive to steel negative


How does current flow in a standard DC circuit?

(the current in the earth direction is going left of use) 8th grade studend juicey babee


A regulated dc power supply contains three terminals.positive negative and ground.a positive terminal for positive connection a negative for negative connection What is the use of ground terminal?

Grounding terminals are used to connect the electrical equipment or wiring system to the Earth. It's purpose is to reduce the risk of electrical shock in the event of a fault current. In most homes, the wiring system is permanently grounded to a metal pipe that connects to an underground water-supply system or to a metal rod that has been driven into the ground.

Related questions

Why you use 2core cable for Dc motorCan you use 3core?

Mostly for small dc motor, 2core are used. earthing can be achieved by grounding the chassis.


Does dc supply needs an earthing?

yes it does... thanks for asking...


How do you get -48v DC?

In a 48V DC system you ground the positive to 0V so the live wire will be -48V.


Does RCD works on DC system?

Yes.but you should use DC RCD


Why dc supply cannot be given to transmission lines?

We can use DC too for the transmission system. Refer HVDC transmission system.


Can we provide Common earthing for ac and dc equipment?

Yes, the electrical code states that all electrical equipment must be grounded.


Why negative control is adopted in DC system And why DC circuit breakers are kept at the negative side?

The answer is: They are not. Whosoever told you that is off his meds. Alternatively, in some special applications there may be a reason for it. Many DC systems use a common ground where the loads are encased in the ground (like starter motors). Thus all breakers are positive, but some don't. If the loads don't care about polarity and the positive and ground are not common (like with a metal chassis), positive and negative is irrelevant.


Difference between ac and dc bridge?

DC Bridge... We use DC supply, Detector is also a DC current detector and we use only resistive components no need for wegner's earthing device balancing time is comparatively less.. where as in AC bridges opposite of above. i.e. AC supply, AC current detector resisitive+ reactive componants need for wagner's earthing device and balancing time is high as we use AC supply..


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.


One application that use microelectronics system?

A well known application of a microelectronic system is the AC to DC converter. If, for example, you wanted to take electricity from a wall outlet you could use 4 diodes a resistor and a capacitor of correct values to change it into a DC current.