Project - Analysis of a practical automotive wiring circuit

ans 1=

• Starter
• Battery
• Distributer
• Ammeter
• Generator
• Junction box
• Breaker
• Fuse
• Foot selector switch

ans 2=

Fuse:It is a safety device. The fuse breaks the circuit if a fault in an appliance causes too much current to flow. This protects the wiring and the appliance if something goes wrong. The fuse contains a piece of wire that melts easily.

purpose-

The fuse breaks the circuit if a fault in an appliance causes too much current to flow. This protects the wiring and the appliance if something goes wrong. The fuse contains a piece of wire that melts easily. If the current going through the fuse is too great the wire heats up until it melts and breaks the circuit

• Acts as a barrier between the electric circuit and the human body
• Prevents device failure due to faulty circuit operation
• The fuse prevents short circuits
• Prevents overload and blackouts
• Prevents damage that is caused due to mismatched loads

The markings on the fuse carry information such as the Ampere rating, voltage rating, and interruption rating.

Working-

The fuses work on the principle of the heating effect of the current. It’s made up of thin strip or strand of metallic wire with noncombustible material. This is connected between the ends of the terminals. Fuse is always connected in series with the electrical circuit.

When the excessive current or heat is generated due to heavy current flows in the circuit, the fuse melts down due to the low melting point of the element and it opens the circuit. The excessive flow may lead to the breakdown of wire and stops the flow of current. The fuse can be replaced or changed with the new one with suitable ratings. The fuse can be made up of the element like zinc, copper, silver &aluminum. They also act as a circuit breaker which is used to break the circuit when the sudden fault occurs in the circuit. This is not only a protector but it is also used as a safety measure to prevent humans from hazards. So this is how the fuse operates.

Battery-

purpose-Batteries are small essential components to operate many devices. It is one of the key components in our day-to-day life. Some batteries are rechargeable batteries and are used in each and every sector. Below are some of the applications of batteries.

• Automotive
• House
• Health Instruments
• Medical
• Logistics and construction
• Firefighting and Emergency
• Military

Electric Vehicle Battery is commonly used in vehicles. This battery is used to power the electric motors of electric vehicles. The batteries of electric vehicles are usually rechargeable. Generally, lithium-ion batteries are used in electric vehicles.

working-

• A battery is a device that stores chemical energy and converts it to electrical energy.
• The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit.
• The flow of electrons provides an electric current that can be used to do work.
• To balance the flow of electrons, charged ions also flow through an electrolyte solution that is in contact with both electrodes.
• Different electrodes and electrolytes produce different chemical reactions that affect how the battery works, how much energy it can store and its voltage.

Generator- is also called a dynamo, it converts mechanical energy into electricity for transmission and distribution over power lines to domestic, commercial, and industrial customers. Generators also produce the electrical power required for

• automobiles
• aircraft
• ships
• trains

Working-

Generators don’t actually create electricity. Instead, they convert mechanical or chemical energy into electrical energy. They do this by capturing the power of motion and turning it into electrical energy by forcing electrons from the external source through an electrical circuit. A generator is essentially an electric motor working in reverse.

Some electrical generators, such as those at Hoover Dam, for example, are huge and provide enormous amounts of energy by transferring the power created by water turning turbines into electricity. Residential and commercial generators however are much smaller and rely on more traditional fuel sources like diesel, gas, and propane to create mechanical power that can then be forced into a circuit and induce an electrical current.

ans 3=

Given data;

Total load(I)=10A

fuse rating=?

Voltage(V)=30V [since the typical Car battery voltage is 30V ]

we know that;

P=V*I

P=30*10

P=300KW

fuse rating=I=(P*1.5)/V

I=(300*1.5)/30

I=15A

The fuse rating is more than the maximum load of the appliance to avoid the short circuits or damage of appliance due to over flow of load. we must maintain the fuse rating 25% greater than the total load. so that the fuse rating is to be 15A.

ans 4=

Given data;

I=10A (from the previous question)

P=500W

V=?

C=?

we know that,

From the power formula,

P=V*I

V=P/I

V=500/10

V=50V

capacity (C)= I*T

=10*1

C= 10Ah

ans 5=

Horn: parallel 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 parallel 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 parallel circuit, the other lights still light up.

As per the above image Generator with current voltage and regulater are connected in parallel if two are more components are connected in parallel the have the same differential of potential voltage across their ends.

ans 6=

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(nearly zero) device. If it will be connected in parallel, it would draw most of the current and would get damaged.

as per the above image battery and starter are in series to each other because same current flows throw them.