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Multimeter use
Bio Med Tech course 1
| Question | Answer |
|---|---|
| What are the three quantities that multmeters measure? | Voltage, Current, and Resistance |
| How is the analog multimeter recognized? | By its display's pointer (needle) that indicates the measured value on a scale. |
| How is the digital multimeter recognized? | By a digital or liquid crystal display (LCD) display that indicates the exact measured value. |
| A "_" sign in the display of a digital multimeter is an indication that? | A negative voltage is being measured |
| One feature that a digital multimer may have that an analog multimeter does not have? | Auto range |
| Which of the following would not be a display indication of overload condition for a digital multimeter? | The display shows "0" |
| Which of the following are signs on the display that indicates a overload condition for a digital multimeter? | "E" for error, "OL" for overload, The digits are flashing |
| When measuring resistance with an analog multimeter, the measured value is obtained by? | Multiplying the reading by the multiplier at the switch position. |
| The most prominent difference between an analog and digital multimeter is the? | Display |
| When measuring a negative DC voltage with an Analog multimeter without a function switch setting for -DC, place the positive test lead----and the negative test lead----? | To ground, to -V test point |
| Not all digital multimeters have a? | Range switch |
| What are the parameters are measured by a multimeter? | Current, Resistance, Voltage |
| To measure at a test point with a multimeter that does not have alligator clip ends? | Hold the lead in place |
| Test equipment should always be----before power is applied to circuit under test. | Prepared for operation |
| What can the Analog multimeter be used for? | It can be used to make ACCURATE NON-FREQUENCY SPECIFIC MEASUREMENTS of AC and DC voltage, current, and resistance. |
| What is Zero Ohms used for on an Analog meter? | It is used to compensate from probe resistance |
| When making measurements with an analog meter of unknown values what should you do? | Start with the largest range and then decrease until the needle is closest to mid-scale |
| What provides for the most accurate measurements on an analog meter? | Midscale readings |
| What can the Digital multimeter be utilized for? | It can be used to make MORE EXACT Voltage, current, and resistance measurements. |
| Digital multimeters have a frequency range where-----can be obtained? | Accurate AC readings |
| What sign is visible on the screen of a digital meter when measuring for negative readings? | A negative sign ("-") is displayed |
| What does the O.L. sign mean when visible on the screen of a digital meter? | O.L. will be indicated when an out-of-limits, overload, or infinite condition exists |
| How are Large or Small values displayed on the display of a digital meter? | It is displayed in metric notation indicated by the appropriate symbol on the display |
| Where do you place the test leads into the multimeter? | Place the red lead in the voltage jack Place the black lead into the common jack |
| Where do you place the black reference or negative lead into the circuit? | Normally placed at a lower potential with respect to the red lead |
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