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ohmmeter has it's own power supply
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoOhm meter
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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 reason of reverse indication on in single phase kWH meter?
A kWh meter measures the flow of energy along the circuit that the meter is connected to. Normally power flows from the supply to the load, which is the conventional direction, but in some cases, for example if the load is replaced by a generator, power can flow the other way and in that case the meter indicates a backward, negative, flow of power.
Why the power must be off when checking the resistance in the circuit?
an ohmmeter contains its own power source that it uses to test the circuit. if power is still on in the circuit, at the least the meter will give incorrect readings, at the worst the meter may be damaged rendering it useless.
How do you on off energy meter without cut of power supply?
It sounds like you are trying to steal power. I don't recommend it; modern energy meters are pretty well tamper proof.
Would cause a meter to read negative voltage across a dc motor?
A DC motor generates power when it is rotating even when no supply is connected.
What meter has its own power source?
Ohm meter
How is the power factor meter connected?
power factor meters are connected across the supply
How much power is used by a 35w bulb with 12v supply vs 110v supply?
it also depends on what meter you have, is it a KWH METER or a AH METER. IF ITS A KWH METER(KILO WATT HOUR) IT COUNTS IN WATTS (35w PER HOUR.)
Is there a meter display when power is out?
Depending on meter model and type it may. Smart meters have ability to operate without supply to communicate with grid.
Yes as long as the hard drive has its own power supply and not powered by the USB port.?
Yes as long as the hard drive has its own power supply and not powered by the USB port.
Why do retailers now have the power in the supply chain?
To Control their own company
How do components get power?
A computer's power supply unit provides all needed voltages for the components of a computer that are internal. Externals either draw power from the USB bus (which in turn gets it's power from the aforementioned PSU or a Hub with a power supply) OR have their own internal power supply with a cable.
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
If you are in a business and the meter you paying for is also the owner meter how do you get your own meter?
Could be tricky. The business owner WILL need to give their written consent (since it's their building). However - you could contact the energy supplier and ask them for a separate meter. Assuming you rent a room(s) within the main building, the power company should be able to run a spur off the main supply cable for the building to provide your workspace with a separate meter.
Why remove resister from circuit to measure resistance?
a meter uses its own supply to measure resistance. you dont have to remove the resistor from the circuit but you must isolate it from the circuit supply to get an accurate reading.
Is there a display when power is out?
Depending on meter model and type it may. Smart meters have ability to operate without supply to communicate with grid.
What must be disconnected from a circuit under test before connecting the ohm meter to the circuit?
You must always disconnect the power supply from the circuit before connecting an ohmmeter.otherwise the meter may be damaged.
