BE/B Eng Bachelor of Engineering Electrical Engineering 1

Question 1

What is the SI unit of electric charge?

Accepted Answer

Coulomb

Answer

The coulomb (C) is the SI unit of electric charge, equal to the charge transported by a current of one ampere in one second.

Question 2

Ohm's Law states that voltage equals current multiplied by which quantity?

Accepted Answer

Resistance

Answer

Ohm's Law (V = IR) states that voltage equals current times resistance for a linear circuit element.

Question 3

In a series RLC circuit at resonance, what is true about the impedance?

Accepted Answer

Impedance is at its minimum

Answer

At resonance in a series RLC circuit, the inductive and capacitive reactances cancel, leaving only resistance, so impedance is minimized.

Question 4

Which theorem states that any linear two-terminal network can be replaced by an equivalent voltage source in series with an impedance?

Accepted Answer

Thevenin's Theorem

Answer

Thevenin's Theorem allows simplification of complex linear circuits into a single voltage source (Vth) in series with an equivalent resistance (Rth).

Question 5

What does a transformer primarily use to transfer energy between circuits?

Accepted Answer

Mutual inductance

Answer

A transformer transfers electrical energy between circuits via mutual inductance through a shared magnetic core.

BE/B Eng Bachelor of Engineering Practice Test