Reference no: EM132454765

Question 1. A technician measured a 5V voltage source using a DMM and a VOM and the results are recorded in the table as shown below. Compare the two sets of data in terms of accuracy and precision.

DMM    4.99V  5.01V      5.00V   4.99V    5.00V
VOM     4.9V   5V            5.1V    5V           5V

Question 2. An unknown resistor R is measured by the ammeter-voltmeter method

(a) the measured value of R;
(b) the true value of R;
(c) the percentage error of the answer in (a).
(d) Comment on the use of the circuit in measuring resistance.
(e) If measurement of voltage is made by a 3½ digital meter DMM of accuracy ± (0.5% reading + 1 digit), what is the possible guaranteed limit?

Question 3. It is required to convert a moving coil micro-ammeter into an ammeter of full scale 4A. The micro-ammeter has a full scale of 100

1. A and an internal resistance of 500
2. Sketch the circuit arrangement that should be made for the conversion and calculate the value of resistor required.

Attachment:- voltage.rar