Why are electrical analogies preferred to Analyse mechanical system?

It has the major advantage that the entire system can be represented in a unified, coherent way. Electrical analogies are particularly used by transducer designers, by their nature they cross energy domains, and in control systems, whose sensors and actuators will typically be domain-crossing transducers.

What are the analogies between the electrical and mechanical elements?

Key Concept: Analogous Quantities

Electrical Quantity Mechanical Analog I (Force-Current) Mechanical Analog II (Force Voltage)
Voltage, e Velocity, v Force, f
Current, i Force, f Velocity, v
Resistance, R Lubricity, 1/B (Inverse friction) Friction, B
Capacitance, C Mass, M Compliance, 1/K (Inverse spring constant)

Why is electrical resistance analogous to mechanical friction?

Electrical resistance is analogous to friction in a mechanical system. Friction, like resistance, converts energy to heat and dissipates it to the surrounding environment. Therefore, electrical resistance can sometimes be thought of as a braking or dampening mechanism for a circuit.

What is electrical analogous?

[ə′lek·trə·kəl ′an·ə‚läg] (physics) An electric circuit whose behavior may be described by the same mathematical equations as some physical system under study.

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What in electric system represents force in mechanical system?

In a mechanical system, input and output are force and velocity respectively. While in the electrical network these are voltage and current through the elements respectively. … As here B represents the frictional force constant thus corresponds to resistance in the electrical network.

How many types of electrical analogies are there?

There are two types of electrical analogies of translational mechanical systems. Those are force voltage analogy and force current analogy.

What are the three basic elements in the electrical system?

Electrical systems, also named circuits or networks, are designed as combinations of mainly three fundamental components—resistor, capacitor, and inductor—which are correspondingly defined by resistance, capacitance, and inductance, generally considered to be lumped parameters.

What is a specific resistance?

Definition of ‘specific resistance’

1. the electrical property of a material that determines the resistance of a piece of given dimensions. It is equal to RA/ l, where R is the resistance, A the cross-sectional area, and l the length, and is the reciprocal of conductivity. It is measured in ohms. Symbol: ρ.

What causes electrical resistance?

An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.

Does resistance depend on frequency?

The resistance does depend on frequency. The reason is ‘skin effect’. When an alternating current is passed through a conductor only a small portion of the conductor, usually called the skin depth carries the current. The value of skin depth is inversely proportional to frequency.

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What are the analogies for electrical parameters current?

When describing voltage, current, and resistance, a common analogy is a water tank. In this analogy, charge is represented by the water amount, voltage is represented by the water pressure, and current is represented by the water flow. So for this analogy, remember: Water = Charge.

Which one is correct for F v analogy?

In Force-Voltage Analogy: Velocity is analogous to current.


Force analogy Voltage analogy Current analogy
Force (F) Voltage (V) Current (I)
Mass (M) Inductor (L) Capacitor (C)
Spring Constant (K) 1/C 1/L
Damper (B) R 1/R

How does a mechanical system work?

A mechanical system is a set of physical components that convert an input motion and force into a desired output motion and force. Mechanical systems have at least three elements: input, process and output. The input part of the system is any type of motion and force that drives the mechanical system.

What is the role of a battery in an electric circuit describe a mechanical analogy?

The battery acts as a charge pump in a circuit, moving charge between terminals so as to supply an electric potential difference across the two ends of a circuit. It serves an analogous role as the water pump in a water circuit.

What are the basic elements used for modeling mechanical rotational system?

Modeling of Rotational Mechanical Systems. Rotational mechanical systems move about a fixed axis. These systems mainly consist of three basic elements. Those are moment of inertia, torsional spring and dashpot.

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