Project - Analysis of a practical automotive wiring circuit
1) Identify each of the major elements in the above automotive wiring diagram.
A) a) Genarator
b) Battery
c) Starter
d) Ignition coil
e) Ammeter
f) foot selector switch
g) Breaker
i) fuse
j) Current and voltage regulator
2) Explain the purpose and working of any three elements briefly
A) Genarator : An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy. it used the mechanical energy supplied to it to force the movent of electric charger present in the wire of its windings through an external electric circuit
B) Fuse : it is a safety device. the fuse breakes the circuit if a fault in an appliance caused too much current to flow. this something goes wrong the fuse contains a piece of wire that melts easily.
c) Breaker : A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by an over current or short circuit its basic function is to interrupt current flow to protect equipment and to prevent the risk of fire
3) If the total load is 10A from battery, what shuld be the fuse rating ?
A ) given data :
total load ( I) =10A
fuse rating = ?
voltage (V) =30V ( since the typical car battery voltage is 30W)
we know that :
P=V*I
P= 300 KW
Fuse rating =I=( P*1.5)/V
I =( 300*1.5)/30
I =15A
4) If 500 W is the load, what is the voltage and capacity of battery you recommended?
A) given data
I= 10A ( from above )
p= 500W
v= ?
c=?
from power formula P=V*I
V=P/I
V=500/10
V= 50V
capacity (C)= I*T
C= 10*1= 10Ah
5) identify any two elements which are connected parlel to each other . why thet are connected in parallel?
A) HORN : Parllel switching of high and low tones is used and the main sound frequencies of these signals are harmoniously combined.
All lights : Each light in a parllel circuit has its own circuit . the individual currents add up to the total current. the voltage for each light is the same as opposed to a series circuit ,if one light malfunctions in a parllel circuit, the other lights still light up
6) Identify any two elements which are connected in series why they are connected in series?
A) Battery : Connected in series with high voltage to improve the drivability and energy efficiency
Ammeter: An ammeter is a device which measures the amount of current flowing in a circuit it is a very low resistance ( neraly zero) device . if it will be connected in parallel, it would draw most of the current and would get damaged.