Question

Question 4 (a) For the circuit shown in Figure Q4 below calculate the voltage across the terminals T-T when they are open circuit. (b) A solid state voltmeter with an analogue scale is used to measure the voltage across T-T. What are the maximum and minimum readings that can be expected if the voltmeter is used on its 10 V range and has the specification given below? Specification of analogue voltmeter: Accuracy: ±3% FSD ± 100 ?V Impedance: 10 M? c) A digital voltmeter with a 4½ digit display on the 20V range is now added in parallel with the analogue voltmeter. Specification of digital voltmeter: Accuracy: ±2% FSD ± 1 digit Impedance: 20 M? What are the maximum and minimum readings that can be expected across T-T on each voltmeter?

          Question 4
(a) For the circuit shown in Figure Q4 below calculate the voltage across the terminals T-T
when they are open circuit.
(b) A solid state voltmeter with an analogue scale is used to measure the voltage across T-T.
What are the maximum and minimum readings that can be expected if the voltmeter is
used on its 10 V range and has the specification given below?
Specification of analogue voltmeter:
Accuracy: ±3% FSD ± 100 ?V
Impedance: 10 M?
c) A digital voltmeter with a 4½ digit display on the 20V range is now added in parallel with
the analogue voltmeter.
Specification of digital voltmeter:
Accuracy: ±2% FSD ± 1 digit
Impedance: 20 M?
What are the maximum and minimum readings that can be expected across
T-T on each voltmeter?

Question 4
(a) For the circuit shown in Figure Q4 below calculate the voltage across the terminals T-T
when they are open circuit.
(b) A solid state voltmeter with an analogue scale is used to measure the voltage across T-T.
What are the maximum and minimum readings that can be expected if the voltmeter is
used on its 10 V range and has the specification given below?
Specification of analogue voltmeter:
Accuracy: ±3% FSD ± 100 ?V
Impedance: 10 M?
c) A digital voltmeter with a 4½ digit display on the 20V range is now added in parallel with
the analogue voltmeter.
Specification of digital voltmeter:
Accuracy: ±2% FSD ± 1 digit
Impedance: 20 M?
What are the maximum and minimum readings that can be expected across
T-T on each voltmeter?

Added by Lisa B.

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