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What should a capacitors be shorted with before checking with an ohmmeter?
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Should the ohmmeter be connected to the circuit while the power is being applied or only when the circuit is turned off?
Turn off the supply before using the ohmmeter,it will damaged your ohmmeter when supply is present.
Why if one branch in a parallel circuit is shorted all others will short?
A current checks less resistance path to flow. When one of parallel branches is shorted, it becomes have less resistance and whole the current will flow through it, means current before parallel branches and current after parallel branches becomes same, and all branches become short.
What is the procedure for checking a lathe that the safety mechanisms function correctly?
make sure you test them before working on it
What ohms setting do you use on a meter for 240v electric heater?
Whenever you use an ohmmeter, you must first ensure that the device you want to test is disconnected from the supply. So the fact that your heater is rated at 240 V is irrelevant to this question. The heater must be disconnected from the supply BEFORE you contemplate measuring its resistance. Which 'ohms setting' to use is then simply determined by whichever setting gives you the best reading. For an analogue ohmmeter, this is whichever setting results in the pointer being towards the lower-resistance end of the scale.
Do you unplug before measuring resistance?
Yes. Measuring resistance involves imposing a small current through a device and measuring the voltage drop. If there were any other source of voltage, the reading would be in error. You could also damage the ohmmeter if there were an external voltage source. You should also take the device out of circuit before measuring it, so as to not bias the results by the resistance of other devices in the circuit. It all depends on the situation, for which you are responsible for evaluating before you start.
Should the ohmmeter be connected to the circuit while the power is being applied or only when the circuit is turned off?
Turn off the supply before using the ohmmeter,it will damaged your ohmmeter when supply is present.
What precuation must be taken when using an ohmmeter?
Be certain the circuit is de-energized and discharged before connecting an ohmmeter.Do not apply power to a circuit while measuring resistance.When you are finished using an ohmmeter, switch it to the OFF position if one is provided and remove the leads from the meter.Always adjust the ohmmeter for 0 (or ∞ in shunt ohmmeter) after you change ranges before making the resistance measurement.
How do you take care of an ohmmeter?
Never connect the ohmmeter's leads across a voltage.On an analog meter, adjust the zero before use.Turn your ohmmeter off when not in use, to protect against voltage drain.When your ohmmeter's battery is low, or your meter won't be used for a while, remove the battery to prevent damage to the meter from battery leakage.
How do you discharge a monitor before disposing of it?
In the case of many electronics, you can discharge any capacitors by first unplugging it (and disconnecting any batteries) and then pressing the power button. The capacitors should drain when the circuit is opened.
How old was elizabeth you when she was crowned?
try checking the question before you give the answer (witch is the wrong one) try checking the question before you give the answer (witch is the wrong one) try checking the question before you give the answer (witch is the wrong one)
What to do when your phone has water in it?
You can try waiting for it to dry out before you turn it on again, but it is proably already shorted out and damaged or nonfunctional.
Why must power be turned off when measuring the resistance of a circuit?
If an external Voltage is applied to a multimeter while the multimeter`s function switch is in the Ohm meter position then the Ohmmeter is apt to be destroyed or disabled. Therefore the simplest answer is that the power must be turned off in order to avoid damage to the Ohm meter and possibly to yourself caused by Voltages present in the circuit while the power is own. Another reason of course is because a valid Ohm reading can not be obtained while Voltages are present across the resistance that is being measured because the Ohmmeter itself applies a Voltage across the resistance and then a sampling of the current through the unknown resistance is used by the Ohmmeter`s circuitry to cause a calibrated deflection of the Ohmmeter and thus display on the meter`s dial the Ohmic value of the unknown resistance. For the same reasons as above it is also a good practice to discharge all the capacitors in the circuit after the power is turned off and before any in circuit resistance measurements are made.
Is it safe to take apart electronics if they are unplugged?
In most cases it would be safe. but some devices such as TV's and CRT Monitors can hold voltage for an extended amount of time. be sure to do some research on what ever it is your tinkering with before opening it. Also, electronics with large value capacitors either electrolytic and "oil can" capacitors can hold a significant charge until discharged. Always discharge all capacitors before touching any part of the circuit.
What must you do before checking for breathing?
check if their responsive
Checking antifreeze what should the engine temp be?
just not so hot that you burn yourself. checking before you drive is O.K.
Does TCF have checking accounts?
TCF offers a range of options in its checking accounts including free checking and student checking accounts. Ultimately one would have to consult with a banking consultant before deciding which kind of checking account best suits their needs.
Which is not a reliable source of checking the weather before departing in a boat?
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