Advertisements
Advertisements
Question
State the purpose served by the terminals of a three pin plug.
Advertisements
Solution
The earth pin, which is thicker and longer than the other two pins; first connects the appliances to the earth and ensures safety from an electric shock to the user. The live pin on the right and the neutral pin on the left connects the appliance to the live wire and the neutral wire of the circuit at the supply voltage.
APPEARS IN
RELATED QUESTIONS
The diagram in Fig. shows a three pin plug. Label the three pins.
- Why is the top pin thicker and longer than the other two?
- Why are the pins splitted at the ends?
Draw a labelled diagram of a three pin socket.
The following diagram shows a three pin socket marked as 1, 2 and 3.
- Identify and write live (L) neutral (N) and earth (E) against the correct number.
- To which part of the appliance is the terminal 1 connected?
- To which wire joined to 2 or 3, is the fuse connected?
In following Figure shows two bulbs with switches and fuse connected to mains through a three pin socket by means of a three wires cable.
- Label each component - bulb, switch, fuse and socket.
- Name and state the colour of insulation of each wire 1, 2 and 3.
- How are the two bulbs joined: in series or in parallel?
Fig shows a three pin plug top. Label the three pins. Why is the top pin thicker and longer than the other two? Why are the pins splitted at the ends?
Name the markings of a three-pin plug. Give the colour codes of the connecting leads.
Give the role of each of the three terminals of a three way pin plug.
Draw diagram of a three pin socket outlet and state the connections made to them.
Draw a diagram of a three pin plug top. Mark the pins used for live, neutral and earth connections as L, N and E respectively. To which part of the appliance is the pin marked as E connected. To which line L or N is the fuse connected?
