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Positive earthing in DC systems is primarily used for safety and equipment protection. It helps to minimize the risk of electric shock by ensuring that the system's voltage remains stable and predictable. Additionally, positive earthing can reduce the likelihood of short circuits and equipment damage by providing a clear reference point for fault currents, thereby facilitating effective fault detection and isolation. This practice also aids in the reduction of electromagnetic interference in sensitive electronic equipment.
What else can I help you with?
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
Why can't you earth a DC circuit?
Your question is better expressed as why can an ac circuit be shorted to earth when a dc circuit can't be? With an ac supply only the positive feed is actually present at the socket. There is no negative, just a neutral return which is actually connected to earth at the power station / substation. Earthing an ac curcuit just provides a shorter route to the earth, which is where it would have gone anyway. The earth connection at the socket is just to provide a safe means of dumping the current locally in the event of a fault. In a dc circuit the current has nowhere to go, other than to the negative terminal / rail. Without both positive and negative being present no circuit can be formed.
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.
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..
Is 9v dc in positive or negative?
A 9V DC (direct current) supply can be either positive or negative, depending on how it is configured. Typically, in most applications, a 9V DC source is positive, meaning the positive terminal has a higher voltage relative to the negative terminal. However, if the terminals are reversed, it can be considered a negative 9V DC. The designation of positive or negative is determined by the polarity of the voltage applied.
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 does positive connect to in an electrical system?
In an electrical system, the positive terminal typically connects to the higher voltage side of the circuit, providing the potential difference needed to drive current through the system. It is often associated with the flow of electric charge from the positive terminal to the negative terminal in a circuit. In direct current (DC) systems, the positive terminal is usually marked with a "+" sign, indicating its role in powering devices or components.
