What is uses of digital multimeter?

Answer 1

A digital multimeter is a instrument which is used to measure voltage, current, resistance also it can measures frequency and periodic waveforms. It manly used as test equipement, for example if you had created a circuit you can use it to see if there a fault so then it can be corrected.

Digital meters tend to be more accurate, as they have a very high input impedance, so have less affect on the circuit being measured.

Having a digital output gets round the parallax problem reading a needle.

Having no moving parts, makes them more rugged and less likely to get out of calibration.

The only downside of a digital meter is its harder to see a fluctuating measurement. Watching a needle is better in this case, than watch numbers change.

Answer 2

The same as the function of analog multimeter, but with greater precision and accuracy.

• measure voltage (both DC and AC)
• measure current (both DC and AC)
• measure resistance

Some digital multimeters can also do other things:

• measure capacitance
• measure inductance
• measure frequency
• measure temperature remotely (usually using a thermocouple probe)
• measure current without breaking the circuit (using a clip on magnetic probe)
• test semiconductor devices (diodes, junction transistors, field effect transistors, etc.)
• AF and/or RF signal generator
• etc.

Answer 3

the speedometer cannot be reset or tuned back