3003 LO4 11 RCDs Voltage Current & Equipment Class Measurement

Which ammeter is mostly incorrect?

• 1. 1. Closest to supply phase

• 2. 2. Closest to load from phase

• 3. 3. Closest to return current from load

• 4. 4. Closest to return current to neutral of supply

• None of them are incorrect as current is equal throughout

What current would I most likely read on meter 2 if the lamp load is 100 Ohms

• 230 Volts

• 2.3 Amps

• 100 Ohms

• 1 Amp

• 1 Watt

Which meter will best measure the Power

• Meter 1

• Meter 2

• Meter 3

• Meter 4

• None

If I joined the red cable at A and the blue cable at B with a piece of wire (Shown with blue (white stripe) ), what would the bulb do?

• It would stay on

• It would switch off

• The circuit breaker would trip

• We create a short and the RCD would trip

• The voltage would increase

If I joined the red cable at A and the blue cable at B with a piece of wire (Shown with blue (white stripe) ), what would the voltage on the bulb do?

• Increase

• Stay the same

• Decrease

If I joined the red cable at A and the blue cable at B with a piece of wire (Shown with blue (white stripe) ), what would the current on the bulb do?

• Increase

• Decrease

• Stay the same

• Stop

What am I measuring here?

• Current in AC circuit

• Current in DC circuit

• Nothing, doesn't work like that

What am I measuring here?

• Current in AC circuit

• Current in DC circuit

• Nothing, it doesn't work

Answer explanation

The leads are inserted incorrectly for current, creating a high resistance path for the circuit

Would this be the correct setup configuration to measure voltage on a circuit of AC 230 V and a light bulb?

• Yes

• No

• Depends on Light bulb size

• Depends if the supply is DC or AC

Answer explanation

No. Leads are correct but setting is on Current

Would this be the correct setup configuration to measure current in a circuit of AC 230 V and a light bulb?

• Yes

• No

• Depends on bulb size

• Depends if supply is AC or DC

Answer explanation

The leads are incorrectly inserted for current measurement