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What is the meaning of no load and full load on a power supply?
Wiki User
∙ 12y ago
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.
Wiki User
∙ 12y ago
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Why power factor can not be unity?
Power factor can be unity. If the load is purely resistive, then the load current and supply voltage are in phase, and the load will have unity power factor.
What is load forecasting?
Load forecasting is used by power companies to anticipate the amount of power needed to supply the demand.
What is the load side?
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.
Is a motor considered to be a load?
Yes. A motor is considered to be a load of the power supply in use.
What is the formula of active power?
For a single-phase system, active (or 'true') power is the product of the supply voltage, the load current, and the power factor of the load.
What is the power of a power supply?
power supply is a device that supplies electric power to electrical load
What are the three requirement for a complete circuit?
-- a power supply -- a load -- low-resistance material to connect the load to the power supply
What is the use of a power supply?
power supply is a device that supplies electric power to electrical load
What should you do with a power supply if it is too hot to touch?
Find out what the VA capacity of the power supply is and then add up the connected load in VA (volts x amps). If the load totals are greater that the VA power supply capacity then this is where the heat is coming from. The power supply is overloaded. Remove some of the load or get a bigger capacity power supply.
Why can a reactive power load drop the voltage more than the active power load in a transmission line?
A load with a poor power factor draws extra current from the power supply, meaning that there will be more of a voltage-drop in the supply. As an example, if the load is 6 kW on a 240 v supply, the current drawn is 25 amps if the load has a power factor of 1. The kVA is equal to the kW. But if the load has a power factor of 0.8 it needs to draw 7.5 kVA for a power of 6 kW, which is a current of 31.25 amps, so there is more of a demand on the power supply wiring etc. The transmission losses increase by 56% with the extra current. In both cases the customer is charged for power used, 6 kW. That is why the supply companies do not like loads with a poor power factor and sometimes charge commercial customers more for a poor power factor. That in turn makes it viable for the customers to correct the power factor of the load they place on the supply.
What pieces of information are needed before selecting a power supply?
The main piece of information needed is the load wattage or amperage that will be connected to the power supply. Once this is known the power supply of a greater size that the load should be chosen. Also with this information the size of the wires can be calculated from the power supply to the load. Too small a wire will create a voltage drop at the load end of the circuit. This will cause under performance of the load.
How much power is needed to supply the losses associated with the production of the magnetic field in a 3-phase motor?
You need to conduct No load and full load losses tests to determine the losses.
Why power factor can not be unity?
Power factor can be unity. If the load is purely resistive, then the load current and supply voltage are in phase, and the load will have unity power factor.
What is load forecasting?
Load forecasting is used by power companies to anticipate the amount of power needed to supply the demand.
What will happen if i connect a power supply of higher current rating to lower current load?
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.
What is theTransformer rating in a power supply?
a power supply must deliver xxx watts to a load the transformer must match the load capabilities plus its own loss
What is the load side?
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.
