answersLogoWhite

0

You may be fishing for the answer "AC" or "alternating current", since

no reactive component of power is developed in response to DC.

Answer

Since true power (in watts) is associated with resistive components, and reactive power (in reactive volt amperes) is associated with reactive loads, the vector-sum of these is called apparent power (in volt amperes). So the answer you are looking for is apparent power.

User Avatar

Wiki User

13y ago

What else can I help you with?

Continue Learning about Engineering

What is mean by resistive and reactive load?

A 'resistive' load is one which results in a load current that is in phase with the supply voltage. There is no such thing as a 'purely resistive' load, as all practical loads will have some degree of inductance or capacitance, which will result in a very small lagging or leading phase angle. Typical resistive loads are heating elements in water heaters, etc. A 'reactive' load is one which results in a load current that either lags (inductive) or leads (capacitive) the supply voltage. Purely reactive loads will result in a 90-degree lead or lag but, again, there is no such thing as a purely reactive load as all loads will have some degree of resistance. Accordingly, most reactive loads result in load currents which lag or lead the supply voltage by angles up to just short of 90 degrees. A purely-resistive load would result in true power only; a purely-reactive load would result in reactive power only. Resistive-reactive loads would result in apparent power -a combination (vectorial sum) of true and reactive power.


How do you shift an ac phase?

It really does depend upon what you mean by 'shift'. For purely-resistive circuits, the load current is in phase with the supply voltage. For reactive circuits, the load current will lead or lag the supply voltage; for capacitive-resistive circuits, the load current leads, whereas for inductive-resistive circuit, the load current lags. You can change the angle by which the current leads or lags (the 'phase angle') by changing the amount of resistance or reactance.


What is the role of reactive power in a power system?

To supply the reactive power demand of load and to regulate of output volage at the grid


What is the phase angle difference between inductive load and resistive load?

The phase angle is defined as the angle by which the load current leads or lags the supply voltage.For a purely-resistive load, the phase angle is zero, because the load current is in phase with the supply voltage.For a purely-inductive load, the phase angle is 90 degrees lagging.But few loads are either purely-resistive or purely-inductive; typically, most loads are resistive-inductive. This means that, typically, the phase angle lies somewhere between zero and 90 degrees.


What tends to decrease reactive power in a circuit?

By adding capacitors or inductors in series (typically lower power) or parallel (higher power power factor correction); the choice of capacitor or inductor depends on whether the reactive resistance is "leading" or "lagging". A capacitor is modelled 1/jCw, where w = frequency in rads; an inductor is modeled jLw. If you know the reactive resistance, and the system frequency, you can calculate how much capacitance/inductance is needed.

Related Questions

What is mean by resistive and reactive load?

A 'resistive' load is one which results in a load current that is in phase with the supply voltage. There is no such thing as a 'purely resistive' load, as all practical loads will have some degree of inductance or capacitance, which will result in a very small lagging or leading phase angle. Typical resistive loads are heating elements in water heaters, etc. A 'reactive' load is one which results in a load current that either lags (inductive) or leads (capacitive) the supply voltage. Purely reactive loads will result in a 90-degree lead or lag but, again, there is no such thing as a purely reactive load as all loads will have some degree of resistance. Accordingly, most reactive loads result in load currents which lag or lead the supply voltage by angles up to just short of 90 degrees. A purely-resistive load would result in true power only; a purely-reactive load would result in reactive power only. Resistive-reactive loads would result in apparent power -a combination (vectorial sum) of true and reactive power.


Why there is no reactive power in DC system?

In case of dc there is no reactive components and current drawn from the supply is in phase with the voltage.due to absence of inductor and capacitor the reactive power demand in dc is zero.


How do you shift an ac phase?

It really does depend upon what you mean by 'shift'. For purely-resistive circuits, the load current is in phase with the supply voltage. For reactive circuits, the load current will lead or lag the supply voltage; for capacitive-resistive circuits, the load current leads, whereas for inductive-resistive circuit, the load current lags. You can change the angle by which the current leads or lags (the 'phase angle') by changing the amount of resistance or reactance.


What is tourism network and supply components?

the tourism network and supply components


What are the Components of money supply?

money supply has three components which are; M0,M1 and M2


What is the role of reactive power in a power system?

To supply the reactive power demand of load and to regulate of output volage at the grid


What does the use of redundant network components supply to a network?

What does the use of redundant network components supply to a network? Reliability.


What are the components of Aggregate Supply?

aggregate supply is the total number of good and services produced in a country. The components are GOODS and SERVICES


What is the use of reactive power in electric circuitry?

'Reactive Power', which is expressed in reactive volt amperes, describes the rate at which energy is alternately stored (in a circuit's electric or magnetic field) and returned to the a.c. supply when the field collapses. It differs from true power, expressed in watts, because true power describes the rate at which energy is permanently lost by heat transfer due to the resistive component of the circuit.Reactive power doesn't 'have an use', per se, it's merely a way of quantifying the movement of energy in the reactive component of an a.c. circuit.The vector sum of a circuit's reactive power and its true power is called the apparent power of the circuit, expressed in volt amperes.


What is the phase angle difference between inductive load and resistive load?

The phase angle is defined as the angle by which the load current leads or lags the supply voltage.For a purely-resistive load, the phase angle is zero, because the load current is in phase with the supply voltage.For a purely-inductive load, the phase angle is 90 degrees lagging.But few loads are either purely-resistive or purely-inductive; typically, most loads are resistive-inductive. This means that, typically, the phase angle lies somewhere between zero and 90 degrees.


What is food required to supply?

It is required to supply chemical energy, organic molecules, and essential nutrients


What tends to decrease reactive power in a circuit?

By adding capacitors or inductors in series (typically lower power) or parallel (higher power power factor correction); the choice of capacitor or inductor depends on whether the reactive resistance is "leading" or "lagging". A capacitor is modelled 1/jCw, where w = frequency in rads; an inductor is modeled jLw. If you know the reactive resistance, and the system frequency, you can calculate how much capacitance/inductance is needed.