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A resistive load is one which does not power a motor. Examples of resistive loads would be light bulbs, toasters, stereo systems, televisions, hot plates and convection heaters. To calculate the wattage required to run these items, simply multiply input amps x volts for each individual item, then add those figures together to get the total wattage required. For example, 5 light bulbs at 60 watts each would be a total of 300 watts. If you want to add a 1500 watt hot plate, your total is now 1800 watts. Adding some music from a radio would add another 100 watts, and so on. • A reactive load is one that is usually associated with some type of electric motor. Examples of reactive loads would be circular saws, furnace motors, water pumps and air conditioners. This type of load may take three times the rated power requirement to start up and perform the required work. An example of this would be an air conditioner that runs on 20 amps at 120 volts. The running watts would be calculated.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoA resistive load exhibits a pure resistance all the way down to DC. A reactive load (an inductor) presents negligible resistance at DC but 'appears' as a resistance (reactance) to AC. Therefor a reactive load is frequency dependent and will need to be calculated relative to the AC frequency of operation.
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Do air conditioners use resistive load or inductive load?
resistive loadAnswerIf the current is driving a motor, then the load is resistive-inductive.
In a circuit with resistive and inductive load what happens to the power factor as the resistive load increases?
The PF will increase
How can you make an electric current stronger?
An electric current through a resistive circuit can be increased by decreasing the resistive load or increasing the voltage of the circuit.
What is the voltage across the load R when the switch is ON?
It's the product of the resistance of that resistive load and the current passing through it.
Can a diode work in ac?
A diode is a "one-way valve" that allows electrical current to flow in only one direction. A diode placed in series between an AC voltage source and a resistive load will allow current to flow through the load in one direction and block the current when the polarity of the AC voltage changes.
What is the Difference between resistive and capacitive load?
when a resistive load is applied there is no phase angle difference between voltage and current. when a inductive load is applied there is phase difference between voltage and current. current lags voltage by an angle of 90 degrees for pure inductive load
When using a resistive load bank to test a generator do you load it to the kW or the kVA?
When using a resistive load bank to test a generator, it does not matter if you load the generator to its kW or kVA rating, because those two numbers are the same when considering a resistive load. Power factor, which is the difference between true and apparent power, only comes into play when there is a reactive (inductive or capacitative) load.
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.
When do you use Power Factor?
You use power factor when the load is not resistive, i.e. when it is reactive, and the phase angle between voltage and current is not zero.
What would be the readings of the two watt meter if the load is purely resistive and purely reactive?
A purely resistive load would indicate whatever watts would be normal for that load. A purely reactive load would indicate zero on the watt meter, in the theoretical case, because the power factor would be zero.
When using an external resistive load bank to test an engine driven generator do you load it to kVA or KW?
It does not matter, when testing a generator with a resistive load bank, if you load it to kVA or KW. For a resitive load, i.e. non-reactive load, the power factor is one, so kVA and kW are the same.
Is computer is Resistive load?
It is resistive much load
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.
Air conditioner is a resistive or a reactive load. Please explain.?
Its actually inductive, because the energy being used is to turn motors. Motor are an inductive load, so the end load is reactive. Do your own research so you will know how to apply it someday.
Do air conditioners use resistive load or inductive load?
resistive loadAnswerIf the current is driving a motor, then the load is resistive-inductive.
Can reactive power be used to power a bulb?
The 'type' of power is determined by the load. If the load is resistive (e.g. a lamp) then the rate at which it consumes energy is termed 'true power', expressed in watts.You seem to be under the impression that reactive power is 'pushed out' into a load. This is quite false; the loaddetermines the power.
What is phase angle between line voltage and line current for resistive load in star connected system?
With a purely resistive load the phase angle will be zero. A 'star system' refers to a three phase power system with a resistive load placed between each phase and the neutral. If you have a resistive load(s*) evenly balanced across all three phases the phase angle will be zero, although depending on which point you look at, the current will actually be zero. The 'star system' is to help compensate for unbalanced loads. In practice you are going to have a lot of inherant inductance in such a system. So either the load will have some capacitance built into it to compensate or you will have a special reactive power compensator unit to deal with it. *Actually this will be three loads.
