Project - Analysis of a practical automotive wiring circuit

1) generator

distributor

breaker

ignition coil

starter

battery

ammeter

fuse

foot selector switch

current and voltage regulator

2) breaker

It is a electrical safety device. it protects the electrical ciurcuit from over cuurent, short circuit or any other faults in the circuit. Different type of breakers are moulded case circuit breaker, miniature circuit breaker, earth leakage circuit breaker, residual current circuit breaker and surge arrestors. All of these devices interupts the current flow if any faults is present in the circuit.

generator

generators convert the mechanical energy to electrical energy. The mechanical energy is converted to electrical energy through different techniques. The produced electrical energy is either stored or distributed through transmission channels. It works on the basis of when a magnetic filed is cut by a conduter a emf is generated in the conductor. mechanical energy is captured by different techniques. the powe generated is used to power everything.

ammeter

they are devices used to measure the electric current flowing through it. they are connected in series with the circuit. they have low resistance and cause only minor voltage drop across it.

3)

load = 10 A

v =12v given

power= i*v = 10 *12 =120w

fuse rating = (power/voltage)* small increase in power assume1.2

=(120*1.2)/12= 12A

4)

p=500w

given v=12v

I =p/v =500/12 =41.6 A

capacity= I*T

assume time 10hrs

capacity= 41.6*10 = 416Ah

5)

horn and lights

all are connected parallel as they are operated separately separate circuit is needed.

6)

battery and ammeter are connected in series. as the current flowing through the circuit is to be moniterd all the time they are connected in series with battery.