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Why must the resistance of any SRS wiring never be checked with a multi-meter without carrying out necessary precautions first?
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Why should you never measure resistance in a circuit carrying a current?
Ideally true, but seldom so. The vast majority of resistance meters use current to measure resistance and just use V=IR to give R - the resistor is in a circuit carrying current. The only method that does not have a current through the resistance, it actually relies on the fact, is a Wheatstone bridge. The most important reason for not having a current is that you will be using a current in most cases, to meaure the resistance. Current from another source will screw the reading. Also, with a current flowing, you are not measuring resistance - you are measuring impedance - a combination of inductance and resistance.
What is the electrical resistance offered by a current-carrying element that produces a drop of one volt when a current of one ampere is flowing through it?
One ohm.
What is a current-carrying wire?
A wire with some resistance and a voltage applied to it The amount of current I passing this wire is V/R
Why a electrician must use srewdriver when repairing an electrical circuit?
Electrician uses many tools while carrying out his job. Screw driver is one of the tools. He uses multimeter, wire stripper, screw driver, nose plier....many more depending on the equipment, panel devices.
What will be Heat developed in current carrying carrying conductor?
Any conductor has resistance. Maybe not much, but there's always some.Any resistance dissipates power, at the rate of I2R. (I = current through it, R = its resistance.)That's how you build toasters.
What is effect of resistance in heat production in a current carrying conductor?
resistance will be high
What are the precautions you have to take while carrying out oxidation?
This depends on the specific reaction involved.
What are the specific safety precautions that need to taken when carrying out fault diagnosis of the specific piece of equipment?
Describe the specific safety precautions to be taken when carrying out fault diagnosis of the specific piece of equipment
Why would never measure resistance in a circuit carrying a current?
If the circuit is carrying current then that means that the load (resistance) is in the circuit. if an ohm meter is connected in the live circuit then there would be some voltage drop at the ohm meter but as the meter has very less resistance, this would damage the instrument.
Why current carrying wires become hot?
Resistance. Need larger gage wire
Why human body has more resistance than metal?
Human body has more resistance than metal because it has less conductor for carrying electrons.
When carrying out an insulation resistance test on a walloven with mineral insulated metal sheathed heating elements the minimum permitted insulation resistance is?
0.1M ohms
What precautions sholud be taken to prevent any damage to property when carrying an old radiator through a house?
Draining it for one thing
What is mocromolecule?
Is large chemical compound necessary for carrying out life functions.
What precaution one has to take while carrying a test tube baby?
There are no special precautions when pregnant with a baby conceived through in vitro fertilization.
How do biotic potential and environmental resistance interact to determine carrying capacity?
The carrying capacity effects the interactions with environment just like the limiting factors effect interactions with environment.
Why should you never measure resistance in a circuit carrying a current?
Ideally true, but seldom so. The vast majority of resistance meters use current to measure resistance and just use V=IR to give R - the resistor is in a circuit carrying current. The only method that does not have a current through the resistance, it actually relies on the fact, is a Wheatstone bridge. The most important reason for not having a current is that you will be using a current in most cases, to meaure the resistance. Current from another source will screw the reading. Also, with a current flowing, you are not measuring resistance - you are measuring impedance - a combination of inductance and resistance.
