FREE Master of Electrical Engineering Questions and Answers

Question 1

The force between two conductors that are infinitely parallel is inversely proportional to .

Accepted Answer

The distance between the two conductors

Answer

According to Ampere's force law, the force per unit length between two infinitely long, parallel conductors carrying current is directly proportional to the product of the currents and inversely proportional to the distance between them. This fundamental relationship in electromagnetism describes how magnetic fields generated by currents exert forces on other current-carrying conductors.

Question 2

What happens to the force between the two conductors when the operating distance between them grows?

Accepted Answer

Decreases

Answer

As established by Ampere's force law, the magnetic force between two parallel current-carrying conductors is inversely proportional to the distance separating them. Therefore, if the operating distance between the conductors increases, the magnetic force between them will decrease. This inverse relationship means that as distance grows, the force weakens.

Question 3

Due to the electric current flowing through a long wire, the magnetic field at a location d distance from it is .

Accepted Answer

µ0i/2πr

Answer

According to Ampere's Law, the magnetic field (B) produced by a long, straight current-carrying wire at a distance 'r' (or 'd') from the wire is given by the formula B = µ0i / (2πr). Here, µ0 is the permeability of free space and 'i' is the current flowing through the wire. This formula describes the strength of the circular magnetic field lines around the wire.

Question 4

The equation for the force per unit length between two infinite parallel conductors is .

Accepted Answer

µ0i1i2/2πd

Answer

The force per unit length (F/L) between two infinitely long, parallel conductors carrying currents i1 and i2, separated by a distance 'd', is given by the formula F/L = (µ0 * i1 * i2) / (2πd). This fundamental equation in electromagnetism quantifies the magnetic interaction between parallel current-carrying wires, where µ0 is the permeability of free space.

Question 5

Typically, batteries are connected in

Accepted Answer

Series

Answer

While batteries can be connected in both series and parallel configurations, connecting them in series is a typical method to increase the total voltage. In a series connection, the positive terminal of one battery is connected to the negative terminal of the next, summing their individual voltages. This configuration is common in many portable electronic devices requiring higher operating voltages.

ME or MEng Master of Engineering Practice Test

ME or MEng Master of Engineering Practice Test

FREE Master of Electrical Engineering Questions and Answers