City & Guilds 8202-20 Mock 001

Three resistors of 17 Ω, 44 Ω and 66 Ω are connected in parallel. What is the total circuit resistance?

• 0.09 Ω

• 10.34 Ω

• 42.33 Ω

• 127.0 Ω

An ammeter is to be installed in the circuit shown in Figure 1. At which point in the circuit must this be installed in order to measure the total load current?

• 1

• 2

• 3

• 4

What is the total current in the circuit in Figure 2 if the ammeter reads 8 Amps?

• 6.6 A

• 10.2 A

• 37.3 A

• 45.3 A

What is the SI unit of measurement for capacitance?

• Ampere

• Farad

• Henry

• Webber

What is the unit of magnetic flux?

• Watt

• Tesla

• Weber

• Coulomb

Which electrical item would most commonly contain a permanent magnet?

• Float switch in a water tank

• Dimmer switch on a lighting circuit

• Shower isolator in a bathroom

• Security contact on a door

What does the thumb in Fleming's Right Hand Rule represent the direction of?

• Field

• Motion

• Current

• Resistance

What force would be created by a current of 9.15 A flowing through 1800 mm of conductor with a flux density of 0.35 T?

• 1.78 N

• 5.76 N

• 47.0 N

• 5764.5 N

What is the formula used to calculate the RMS voltage on a 50 Hz sine wave?

• V = Peak/2

• V = Peak/√2

• V = 1/2 × Peak

• V = 1/√2 × Peak

Which cable insulation material must not be used in direct contact with expanded polystyrene?

• PVC

• XLPE

• Glass

• Rubber