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If you take a power source like a dc battery or AC transformer secondary winding and connect an ammeter directly across these power sources you can read the short circuit current available from that source. This gives a measure of internal resistance of the battery or the available wattage of the transformer.
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∙ 14y ago
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Function of a breaker?
The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.
What do you mean by resultant current?
The sharing of current between different components in an AC circuit
What does properly grounded mean?
Properly grounded means that all metallic parts of equipment capable of carrying current, in a short circuit condition, will have the same or be at the same potential as that of the service ground.
What does the term closed circuit mean relative to electricity?
Closed circuit means circuit is complete without any break in between and current is flowing if there is any source.
Why you use upf wattmeter for short circuit test on load test on single phase transformer?
If, by 'upf', you mean 'unity power factor', then allwattmeters measure the in-phase component of the load current, so the term is quiet unnecessary.A short-circuit test is used to determine the (true) power loss in the transformer, which is exactly what a wattmeter measures
Why do you mean by short circuit?
A short circuit is a low resistance connection established by an accidental touching between a line supply and a grounded object in an electric circuit. The current will flow through the low resistance point, bypassing the rest of the circuit. When this happens the circuits over current device should open the circuit.
When the current will be short and open circuited?
Open circuit has no current, so does that mean any resistor in series with it, has no current ,so it can be ignored for analysis( v=ir so 0 current means 0 V) for finding lets say the Thevenin equivalent.? Now for Short circuit, do we ignore a resistor in series with the short, because current will take path of least resistance and ignore that resistor? Also can short circuit have voltage through it ?
Does a dimmed command on a short or full menu mean that it is not available for a current selection?
Yes.
How does good regulation affect the short-circuit current of an ac generator?
I assume by good regulation you mean a minimal voltage drop internal to the generator. Minimizing this will inherently increase the short circuit current, because it requires minimizing the internal impedance of the generator.
Short for electrical engineer?
Short is short (no pun intended) for short circuit, which is a condition where unexpected current flows, often of much higher current than usual, because the load is often bypassed. Short circuit current flow can be as high as several hundred or several thousand amperes. Some people make the mistake of saying "there is a short" when they actually mean "there is an open". This comes from an intermittent connection that causes the load to not function. If there were a true short, there would be a big spark, possible fire, and the fuse or circuit breaker would blow.
What does short-circuited mean?
Short circuit is when two phases or lines on the power circuit has be abruptly bridged, causing a protected electrical circuit to trip.
Function of a breaker?
The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.
What is the mean of CKT?
CKT is electrician short hand for circuit. A circuit is everything powerd by on circuit breaker
What do you mean by resultant current?
The sharing of current between different components in an AC circuit
What does short circuit mean?
A short circuit condition is caused by the grounding of the circuit anywhere from the distribution point to the load of a circuit. This grounding causes a high rush of current because of a low resistance of this type of circuit. This high rush causes the over protection device to trip and interrupt the current flow.
What does properly grounded mean?
Properly grounded means that all metallic parts of equipment capable of carrying current, in a short circuit condition, will have the same or be at the same potential as that of the service ground.
What is powerful mean?
The product of the instantaneous voltage and the instantaneous current for a circuit or component.
