Electrical Quizz

What color wire should be used for groung?

• Black

• Red

• Green

Lightning conductors are...

• wire used t protect tall building from lightning

• ground the circuit

• supply voltage to the circuit.

A transformer with a turns ratio of 5:1 connected to a 120 V AC power source. the output voltage will be...

• 15 V

• 20 V

• 600 V

One horse power represents.

• 746 Kw

• 0.746 Kw

• 7460 Kw

What is the height of a regular duplex receptacle relating to the floor level?

• 1 ft

• 4 ft

• 5 ft

What is the height of a switch relating to the floor level?

• 1 ft

• 4 ft

• 5 ft

The size of the dryer receptacles normally is...

• 30 A

• 50 A

• 20 A

I a 120 V / 20 A circuit. What is the resistance in the circuit?

• 10 ohms

• 5 ohms

• 120 ohms

I a 120 V / 20 A circuit. What is the minimum size of conductor that could be used in the circuit?

• 10 AWG

• 12 AWG

• 14 AWG

I a 120 V / 20 A circuit. What is power dissipated in the circuit?

• 120 W

• 1200 W

• 2400 W