DC and AC Measurement Quiz

Calculate the sensitivity of a 200 uA meter movement which is to be used as a dc voltmeter.

Determine the value of the multiplier resistance needed to measure a voltage range of 0-12V using a basic D’ Arsonval movement with a full-scale deflection of 60uA and internal resistance of 600Ω.

Using a 1mA, 100Ω PMMC movement, design a multirange voltmeter with the following ranges: 0 –10V, 0-50V, 0-250V and 0-500V. Calculate the maximum voltage for the PMMC, the sensitivity of the DC Voltmeter, and the value of Rs of each range.

Calculate R1, R2, R3 and R4 for the given circuit with Rm = 100Ω, Im = 1mA, Pos2 = 10V, Pos3 = 50V, Pos 4 = 250V.

Calculate the voltage across RB without any meter.

Calculate the voltage across RB when meter A is used.

Calculate the voltage across RB when meter B is used.

Calculate the voltage VR without the voltmeter as shown (50V).

Calculate the voltage VR with the voltmeter connected (46.15V).

List the MINIMUM safety precautions for using a voltmeter.