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1. Digital multimeters are very high impedance, they therefore draw very little current from the circuit under test. This makes them very sensitive to stray voltages. A voltage reading may not neccessarily mean that there is a useful voltage available on the circuit under test. Take readings other than expected, with a pinch of salt. Understand the circuit under test.
2. A varying, or fluctuating voltage on the circuit under test, is not easy to see from digits. The numbers may just appear to change at random, whereas with an analogue meter, a pulse or variation will be easy to see from the needle movement.
What else can I help you with?
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.
What does it take to be a welder?
to be a welder you must have very steady hands and good eye focus also you must know what process you are doing and what the reactions of this process are
What does a robot have to have to be a robot?
A Robot must have a purpose or twoA Robot must be able to move (anyway , remote control)A Robot must have some updated technology in this way i mean it could plug in to the computer and you can control it from thereIt must have some Ability (to see take pictures)
What is one math course you must take to be a civil engineer major at a college in Connecticut?
Calculus for sure.
Which section of a beam must take a load to provide maximum strength?
the part of beam which has maximum section modulus should take more load for more strength.
What precaution must you take during cyclone?
We must stay in doors. We must take precaution by buying candles, tinned food etc..
What precaution must you take with the beverage container so you can drink from it while working in the kitchen?
tight lid and a straw
What is the precaution to take when using measuring cylinder?
Ensure that the measuring cylinder is on a flat surface to get an accurate measurement. Also, read the measurement at eye level to avoid parallax errors. Handle the measuring cylinder carefully to prevent breakage.
How do you use the word precaution in a sentence?
"She took every precaution to ensure she would not get hurt while riding her bike" We should get insurance, just as a precaution. What precaution have you taken against failure? After having knee surgery, the basketball player began wearing a knee brace as a precaution. Please take the precaution of holding onto the rail while crossing this high bridge over the canyon.
What precaution you should take while recording air temperature?
sleep properly and do the work properly
What is the meaning of the word precaution?
- safeguard - Take precaution: Be careful
Safety precaution must you take when storing ammunition that belongs to Chemical Group C?
Have a barrel of water near ammunition
Which safety precaution must you take when storing ammunition that belongs to group chemical group C?
Have a barrel of water near ammunition
What safety precaution should you take while filling the fuel take of a gasoline powered boat?
Keep engines, motors, and fans turned off
What safety precaution should you take while filling the fuel tank of a boat?
keep engines, motors, and fans turned off
What precaution should you take while filling the fuel tank of gasoline powers boat?
Keep engines, motors, and fans turned off
What safety precaution you take while filling the fuel tank of a gasoline powered boat?
Keep engines, motors, and fans turned off
