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A purely resistive load is one in which there is no capacitive or inductive reactance. Whe driven by an AC voltage source, such a load will have no shift in phase angle between voltage and current.
A power factor equal to zero means that the load is purely inductive or purely capacitive, and no power is available to do work, because all of the generated power is going into charging the electric field in the capacitor, or the magnetic field (if an inductive load).
Work it out for yourself. The equation is: Z = E/I, where Z is the impedance, E is the supply voltage, and I is the load current.
A load to drive and a supply of electricity.
Resistive Load An electrical load which is characteristic of not having any significant inrush current. When a resistive load is energised, the current rises instantly to it's steady-state value, without first rising to a higher value. An electrical load in which voltage and current are converted to energy in the form of heat; i.e., an electrical heater, incandescent bulb. Inductive Load An electrical load which pulls a large amount of current (an inrush current) when first energized. After a few cycles or seconds the current "settles down" to the full-load running current. The time required for the curren to "settle down" depends on the frequency or/and the inductance value of the Inductive load
When discussing electricity it is common to break into two parts. There is the supply side which is where the power exists and the load side where the work gets done. In a lighting the supply side would be your house power, for example; and the load would be the bulb. In a flashlight the supply is the battery and the load is the bulb.
The supply won't have to work as hard. It is perfectly acceptable, for example, to use a 1A, 12v supply to supply a 12v, .5A load. The current rating indicates the ability of the supply to dissipate heat caused by the current flowing. If the load current is above the power supply current rating, the power supply will overheat.
load in terms of any electrical machine is of 3 types mainly :- 1)resistive load--it means the load connected is a resistor only. 2)inductive load--it means the load applied is an inductor only. 3)capacitive load--it means the load is capacitor only. 4)also there may be combination of all these types or any two of the above loads like capacitive -resistive load;capacitive -inductive load. NO LOAD:--- as it is very clear from the word itself that it is no load that means no load has been applied to the machine..i.e.the output terminal of machine is open circuited FULL LOAD:-- the maximum load value that can be applied to the machine at which it can work without damaging any part of the machine is called machine working at full load ---------mrityunjay pandey (kiit university ,btech 2nd year)
Your question is confusing, but if you are asking whether you can use a 9V/250 mA adapter to supply a load device rated at 5 V/1000 mA, then the rule is quite straightforward. The adapter's rated output voltage must match that of the intended load, but its rated current must exceed that of the load. So in your example, you cannot use the adapter with the intended load.
Start at the supply and work toward the load.
The motor will run, probably at nearly the same speed, but it cannot supply the same mechanical load. If it can be run on a lighter load, proportional to the voltage, it should be OK.
An inductive sensor depends on ferro-magnetism, which is a characteristic of certain metals, such as iron.