Fundamentals of Engineering Electrical Circuits and Systems

Question 1

What is Ohm's Law?

Accepted Answer

V = IR

Answer

V = I/R

Answer

V = I²R

Answer

V = IR²

Question 2

Three resistors of 6 Ω, 3 Ω, and 2 Ω are connected in parallel. What is the equivalent resistance?

Accepted Answer

1 Ω

Answer

11 Ω

Answer

3.67 Ω

Answer

2 Ω

Question 3

Kirchhoff's Voltage Law (KVL) states that:

Accepted Answer

The sum of all voltages around any closed loop is zero

Answer

The sum of currents entering a node equals those leaving

Answer

Voltage is proportional to resistance

Answer

Power dissipated equals voltage squared divided by resistance

Question 4

What is the impedance of an ideal capacitor C at angular frequency ω?

Accepted Answer

1/(jωC)

Answer

jωC

Answer

jωL

Answer

R + jωL

Question 5

In an AC circuit, power factor is defined as:

Accepted Answer

cos(θ), where θ is the phase angle between voltage and current

Answer

The ratio of reactive power to apparent power

Answer

The ratio of voltage to current

Answer

The ratio of resistance to impedance

Question 6

What does a Thevenin equivalent circuit consist of?

Accepted Answer

A voltage source V_th in series with a resistance R_th

Answer

A current source in parallel with a resistance

Answer

Two voltage sources in series

Answer

A capacitor in series with a resistor