【Daily Topic】【Electrical Edition 20160717】
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Participation reward: 2 Wealth. Reward for correct answer: 9 Wealth. Question: What is apparent power?
Apparent power: In a circuit that contains resistance and reactance, the product of voltage and current is called apparent power, denoted by the letter S or the symbol Ps, with the unit being kilovolt-amps (kVA).
In a single-phase circuit, apparent power is equal to the product of the effective value of the voltage and the effective value of the current
In a circuit with resistance and reactance, the product of voltage and current is called apparent power, denoted by the letter S or the symbol Ps, and its unit is kilovolt-ampere (kVA).
In a circuit, the direct product of current and voltage is the apparent power
The product of voltage and current in a circuit
In a circuit, the direct product of current and voltage is the apparent power. For non-pure resistive circuits, the active power of the circuit is less than the apparent power. In a purely resistive circuit, apparent power is equal to real power.
In a circuit, the direct product of current and voltage is the apparent power. For non-pure resistive circuits, the active power of the circuit is less than the apparent power. In a purely resistive circuit, apparent power is equal to real power.
In a circuit, the direct product of current and voltage is the apparent power.
Answer: Apparent power is also known as “apparent power”. It is the product of the effective value of voltage u and the effective value of current i ； Since apparent power is equal to the product of the effective values of the current and voltage in the network, and the effective value can objectively reflect the magnitude of a sine wave as well as its ability to do work, the product of these two values indicates the amount of energy that must be supplied to the network by the external circuitry in order for it to function properly, or in other words, it represents the capacity of the network. Since the network contains both energy-consuming elements such as resistance, and energy-storing elements such as inductors and capacitors, the external circuit must supply the power required for its proper operation, that is, the average power or active power; at the same time, a portion of the energy must be stored in elements like inductors and capacitors. This is why the apparent power is greater than the average power. Only in this way can the network or device function properly. Supplying power to the network at an average power level does not guarantee its proper operation.
The direct product of current and voltage is the apparent power