G101A - Mag Part 6 & 7

Analogue multimeters are usually constructed using:

• a “moving coil” meter movement

• a “moving iron” meter movement

• an “iron vane” meter movement

• a “dynamometer” meter movement

Is this testing device considered "Contact" or "Non-Contact"

• Contact

• Non-Contact

Analogue ammeters and voltmeters with a moving iron meter movement typically have:

• Linear Scale

• A non-linear scale

• No zero adjustment

• A ‘Category 3’ rating

Is this Clamp meter considered "Contact" or "Non-Contact"

• Contact

• Non-Contact

Clamp testers used for measuring current:

• can help determine prospective short-circuit currents

• allow measurement without interruption to a circuit

• contain both moving coil and moving iron meter movements

• apply a clamping voltage to the circuit during testing

A moving-iron meter has the following inscribed on it's face:
- FSD: 5mA
- Resistance: 25 Ω

Calculate the Voltage at full-scale deflection $V_{fsd\ _{ }}=\ I_{fsd\ _{ }}\times R$  

What is the minimum Cat rating for meters used at point E?

• Cat II

• Cat IV

• Cat III

• Cat I

Voltmeters are connected in _______ & have a ________ resistance

• Series, High

• Parallel, High

• Series, Low

• Parallel, Low

Ammeters are connected in ________ & have a ________ resistance

• Series, Low

• Series, High

• Parallel, Low

• Parallel, High

A dynamometer type meter movement is used in analogue instruments to measure:

• voltage

• current

• power

• resistance