Project - Analysis of a practical automotive wiring circuit

Answer No-01 :- 1- Battery 

2- Ignition Coil

3- Fuse

4- Ammeter

5- Generator 

6- Current and Voltage Regulator

7-Distributor

8- Starter

9- Light Switch 

10- Foot Selector switch

11- Breaker

12- Junction bolck

etc.

Answer No-02 :- 

1- Fuse:- 

Purpose:-Fuse is a protective device (electric safety), means its provide over current protection. Fuses are to protect the wiring and electrical equipment of vehicles.

Working:- Melting of internal conductor due to heat generated by excessive current flow. It is based on the heating effect on current means based on joules law.

H=i*iRt

when heavy current come in fuse then heat increased and according to Joules law fuse current increase and fuse wire got melt. Because fuse wire have low melting point and High resistance.

2- Ignition Coil:-

Purpose:- Produce high voltage to inginte the spark plug.

Working:- It works like a transformer but with a major turn ratio difference. Ignition coil on primary side very few turn are present very thick coil it means a heavy current produce a strong magnetic field. Then it is interrupted by breaker. Sudden breaking of magnetic field produce high voltage in primary winding. Which then converted to very high voltage in the secondary winding becouse of very high turns ratio and then this high voltage is fed to spark plug by distributor.

3- Ammeter:- 

Purpose :- To measure the current.

Working:- When current flow through the aameter the coil present inside the ammeter produce magnetic field which then attact the metalic needle present to show value of the current on the scale. 

Greater the current, greater the pull to the metalic needle. That's how we can measure the value of current by putting the ammeter with any device.

Answer No-05:-

All plastic light are connected in parallel with the battery.

So that they can get the equal and full voltage from the battery.

If one light get damaged others would not get affected because current is divided and different for every bulb, but in series one light will turn off all others light because the current is same in series for all bulbs.

Answer No-06:- 

Ammeter is connected in series with the battery. 

Ammeter is used to measure current and it has zero resistance ideally, So it doesn't affect the current and measure it properly, when connected in series.

Currents remains same in series connection so it is proper to use ammeter in series.