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In a certain balanced three phase system each line current is 5 a and each line voltage is 220v what is the approximate real power factor is 0.7?
Wiki User
∙ 13y ago
1905 watt's ( the pf hasn't been indicated as leading or lagging) this is wrong. the answer is 1770 W its looking for a symplified answer if you dont know whether its leading or lagging use basic formula 220v * 5a * .7 = watts
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoYou'll have to rephrase your question -as it is, it doesn't make sense.
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What is the formula use for calculation voltage and current in star and delta?
Balanced Star (Wye) Connected Systems:Line Voltage = 1.732 x Phase VoltageLine Current = Phase CurrentBalanced Delta Connected Systems:Line Voltage = Phase VoltageLine Current = 1.732 x Phase Current
Does kva equal voltage x current x 1.73 for a 3 phase generator?
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As the voltage applied to a circuit increases the current and the also increase?
answer is actually voltage
In a certain balanced three-phase system each line current is 5 a and each line voltage is 220 v what is the approximate real power if the power factor is 0.7?
154
Why doesn't any current flow through the galvanometer in a balanced Wheatstone bridge?
There is no current flow through the galvanometer in a balanced Wheatstone bridge because, in the balanced state, the voltage on both terminals of the galvanometer is the same. Since the voltage differential in zero, there can be no current.
What is the formula use for calculation voltage and current in star and delta?
Balanced Star (Wye) Connected Systems:Line Voltage = 1.732 x Phase VoltageLine Current = Phase CurrentBalanced Delta Connected Systems:Line Voltage = Phase VoltageLine Current = 1.732 x Phase Current
Does kva equal voltage x current x 1.73 for a 3 phase generator?
Yes, but only for balanced loads (current in all three phases the same value). The voltage value used is the phase to phase voltage.
What is the meaning of 'voltage drives current'?
Think of Voltage as the pressure and Amperage (current) as flow. If you think of it as pipes with water then the pressure would be voltage, and current would be how much water flows past a certain point in the pipe in a given time.
How does current affects voltage?
In common, any application if voltage is increased current will be the small amount. at the same if voltage Decreased current will be increased...AnswerAccording to Ohm's Law, 'the current flowing through a conductor is directly proportional to the applied voltage, provided certain conditions, such as temperature, remain constant'. So if you double the voltage, the resulting current will double; if you halve the voltage, the current will halve.
How can you block voltage until a certain level?
You can 'block' current ... like with a high series resistance ...but you can't 'block' voltage.
What happens to neutral line voltage that gets returned to the power company?
Nothing. The electricity company balanced the feeds out of each substation so that the returning current is balanced. So the returning current is just an overall part of the grid.
What is line voltage and line current in star connection define?
In star the voltage from line to neutral is 1/sqrt(3) times the nominal voltage, while the load current equals the line current. In delta the voltage between lines is the nominal voltage, while the load current is 1/sqrt(3) times the line current (for a balanced load). So a delta load needs 3 times the resistance compared to a star load of the same power.
If the resistance increases what will happen to voltage and current?
If you have a simple circuit. For eg: One voltage source and one resistor, then the voltage of the circuit will always remain the same, the current however will decrease following Ohms' Law V=I*R. If we have a current source instead of a voltage source, we are forcing the current to be a certain value so if we increase the resistor value the current will remain the same but the voltage will increase.
What is the relationship among voltage current and resistance in a circuit?
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
What is a relationship among voltage current and resistance in a circuit?
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
