What is meant by resistive load?

What is meant by resistive load?

Load which consumes only active power is called as resistive load. And if you look at the voltage and current waveforms of such load, you’ll find that, the voltage & current are perfectly in phase with each other. As such type of load only consumes active power, power flows from Source to load only.

What is the function of resistive load?

Load resistors are used for impedance matching, maximum power transfer, to improve output stability, and to ensure a minimum of current circulation. In switching power supplies, they are essential to ensure the correct PSU operation.

What is resistive load and capacitive load?

Compared to resistive loads, inductive load current peaks after voltage. Consequently, inductive coils produce lagging power factors. Capacitive load elements use capacitors that store electrical charge. They resist changes in voltage, which causes current to peak before voltage during each electrical cycle.

Is a kettle a resistive load?

Equipments such as Electric Heaters, Water Kettle Geyser are predominantly have Resistive load, Where as Motors have Inductive component and hence draws more current than a resistive load for delivering equivalent power and hence called Inductive load.

What is difference between resistive and inductive load?

In resistive loads, such as light bulbs, the voltage and current waves match, or the two are in phase. As you might guess from the name, resistive loads only resist the current and are the simplest type of load. In inductive loads, such as an electric motor, the voltage wave is ahead of the current wave.

Why is load resistance used?

Load resistors are used for impedance matching, maximum power transfer, to improve output stability and to ensure a minimum of current flow. in switching power supplies, they are essential for the proper operation of the psu.

Is computer resistive load?

They are a mostly resistive load in that the AC voltage is converted to DC, then is used to drive a switching power supply.

What is pure resistive load?

In a purely resistive circuit, all circuit power is dissipated by the resistor(s). Voltage and current are in phase with each other. In a purely reactive circuit, no circuit power is dissipated by the load(s). Rather, power is alternately absorbed from and returned to the AC source.

Is a heater a resistive load?

Resistive loads such as electric heating elements have a power factor of 1. The theory could go on, but the important part is the practical consideration and application of power factor.

What is a purely resistive load?

A purely resistive circuit is a circuit that has inductance so small that at its typical frequency, its reactance is insignificant as compared to its resistance. Furthermore, in a purely resistive circuit, the whole of the utilized voltage is consumed in overcoming the ohmic resistance of the circuit itself.

What is the purpose of a resistive load?

Resistive load: It is a type of load that draws current in the same proportion with the apply voltage. They are typically used to convert current into form of energy such as heat. That is the voltage and current are of the same phase. These kind of electrical load converts electrical energy to heat.

What kind of resistor is a load resistor?

A ‘load resistor’ is simply a resistor that is being used as a load. It may be very small, or may need to be physically big, depending on how much power it has to dissipate.

When does voltage become maximum in a resistive load?

If you look at the current & voltage waveforms of such load you’ll find that, when current is zero, voltage is maximum. And hence, when circuit breaker opens at current zero, voltage across the breaker contact is maximum. Whereas, in case of resistive load both current & voltage becomes zero at same time.

What kind of circuit has a purely resistive load?

Consider a circuit for a single-phase AC power system, where a 120 volt, 60 Hz AC voltage source is delivering power to a resistive load: (Figure below) Ac source drives a purely resistive load.