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The total circuit current in a star-connected transformer can be determined using the formula (I_{L} = \frac{P}{\sqrt{3} \cdot V_{L} \cdot \text{PF}}), where (I_{L}) is the line current, (P) is the total power in watts, (V_{L}) is the line voltage, and PF is the power factor. In a star connection, the phase current (I_{P}) is equal to the line current (I_{L}). Additionally, the relationship between line and phase voltage is given by (V_{L} = \sqrt{3} \cdot V_{P}), where (V_{P}) is the phase voltage.
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If two eletrical loads are connected in parallel with each other and each load draw 6 ampswhat is the total current of the circuit?
When two electrical loads are connected in parallel, the total current in the circuit is the sum of the currents drawn by each load. In this case, if each load draws 6 amps, the total current would be 6 amps + 6 amps, resulting in a total current of 12 amps.
What will happen if several appliances drawing a total current of 18A will be connected to it Explain?
If several appliances drawing a total current of 18A are connected to a circuit designed to handle that load, the appliances will operate normally without any issues, provided the circuit is rated for that current. However, if the circuit's capacity is lower than 18A, it could lead to overheating, tripped circuit breakers, or blown fuses, posing a fire hazard. It’s crucial to ensure that the wiring and circuit breakers are rated for the total current to prevent damage and ensure safety.
Why is the wattmeter connected at the primary side of the transformer?
In general, you can install a wattmeter on the primary or the secondary side of a transformer (it depends what you are trying to measure). But if you are conducting an open- and short-circuit test (to find the transformer's losses), then the wattmeter is connected to the primary side because you want to measure the total (primary + secondary) losses and that is only achievable from the primary side.
What change occurred to the total resistance of the circuit when the extra globe was added?
When an extra globe is added to a circuit, the total resistance depends on how the globes are connected. If they are connected in series, the total resistance increases because the resistances add together. If they are connected in parallel, the total resistance decreases, as the overall resistance is reduced by the additional path for current flow. Therefore, the change in total resistance depends on the configuration of the globes in the circuit.
What is the formula for total current in a series circuit?
Current = (Voltage across the circuit) divided by (Total resistance of the circuit). The current is the same at every point in the series circuit.
Can I connect current transformer in series?
CT(Current Transformer) is used to measure current flowing in the circuit. Current can be fully drawn or sensed in series condition. That's why , it is connected in series. In parallel , the current is divided; and hence the total current cannot be measured)
What are the differences between a series and parallel circuit when connecting batteries?
In a series circuit, batteries are connected end-to-end, increasing the total voltage but keeping the same current. In a parallel circuit, batteries are connected side-by-side, keeping the same voltage but increasing the total current.
Does led lighting require a transformer per light or one per circuit?
One transformer should feed several led's in parallel, but you have to work out how much current each one will take, total it up, and then get a transformer with the correct output voltage and that can supply the total current. Don't exceed the transformer max current or it may fail through overheating
How is an ammeter connected in a circuit in order to read the current flowing in the circuit?
In series with the circuit and never in parallel. The reason being that it will cause the circuit total resistance to drop which will make the circuit draw excessive current. That's a short circuit actually.
The total current that flows through a circuit is the same as the current that flows through each individual resistor connected in series?
True
When an ammeter is connected to measure current circuit current will decrease sightly because R total decreases after the meter is inserted?
Current will be decreased because of the resistance of the ammeter added to the circuit's resistance. In other words total resistance increases.
You are just asking that let us assume you have connected 2 or 3 resistors in a circuit and the current flowing through the circuit and from all the resistors will be same but how?
If the resistors are connected in series, the total resistance will be the sum of the resistances of each resistor, and the current flow will be the same thru all of them. if the resistors are connected in parallel, then the current thru each resistor would depend on the resistance of that resistor, the total resistance would be the inverse of the sum of the inverses of the resistance of each resistor. Total current would depend on the voltage and the total resistance
What is the hypothesis for parallel circuits?
In a parallel circuit, the hypothesis is that when components are connected in parallel, the total current flowing into the junction equals the total current flowing out. Essentially, the hypothesis states that the total current remains constant regardless of the number of parallel paths.
If two eletrical loads are connected in parallel with each other and each load draw 6 ampswhat is the total current of the circuit?
When two electrical loads are connected in parallel, the total current in the circuit is the sum of the currents drawn by each load. In this case, if each load draws 6 amps, the total current would be 6 amps + 6 amps, resulting in a total current of 12 amps.
What is the net resistance of the circuit connected to the battery in Figure 1?
The net resistance of the circuit connected to the battery in Figure 1 is the total resistance that the current encounters when flowing through the circuit. It is calculated by adding up the individual resistances of all the components in the circuit.
What will happen if several appliances drawing a total current of 18A will be connected to it Explain?
If several appliances drawing a total current of 18A are connected to a circuit designed to handle that load, the appliances will operate normally without any issues, provided the circuit is rated for that current. However, if the circuit's capacity is lower than 18A, it could lead to overheating, tripped circuit breakers, or blown fuses, posing a fire hazard. It’s crucial to ensure that the wiring and circuit breakers are rated for the total current to prevent damage and ensure safety.
Why is the wattmeter connected at the primary side of the transformer?
In general, you can install a wattmeter on the primary or the secondary side of a transformer (it depends what you are trying to measure). But if you are conducting an open- and short-circuit test (to find the transformer's losses), then the wattmeter is connected to the primary side because you want to measure the total (primary + secondary) losses and that is only achievable from the primary side.
