Pre-Lab Questions on the Agilent Technologies Multimeter Fall 2004

ME 4331 Pre-Lab Questions on the Agilent Technologies Multimeter Fall 2004

Question #1 1 Question #6 6 Explain “ground loop” in fewer than 50 On p. 417 they give noise in “dB.” What is words. this? What is the difference between a -10dB signal and a -20dB signal? Why are Question #2 2 these values negative? Explain how one could have thermal EMF errors when using copper wires and soldered connections (think about measurements lab).

Question #3 3 How do you protect against reading nothing but noise (electric power, radio stations, cell phones)

Question #4 4 Explain what is meant by an advertised 5 1 2 digit meter.

Question #5 5 How accurately can you read a 1.23 mv thermocouple signal with the instrument? What is the “resolution” of this measurement?

1 From “Standards and Temperature Scales” of the handbook of Heat Transfer – web page. 2 From “Standards and Temperature Scales” of the handbook of Heat Transfer – web page. 3 From “Liquid-in Glass Thermometers” of the handbook of Heat Transfer – web page. 4 From “Resistance Thermometers” of the handbook of Heat Transfer – web page. 5 From “Thermoelectric Thermometers” of the 6 From “Thermoelectric Thermometers” of the handbook of Heat Transfer – web page. handbook of Heat Transfer – web page.