ISCET DC Circuits Fundamentals 3

Question 1

Thevenin's theorem replaces a complex network with which equivalent circuit?

Accepted Answer

A voltage source in series with a resistance

Answer

A current source in parallel with a resistance

Answer

Two resistors in series

Answer

A capacitor and resistor in parallel

Question 2

What is the conductance of a 25Ω resistor?

Accepted Answer

0.04 S

Answer

25 S

Answer

0.4 S

Answer

4 S

Question 3

A current of 3A flows through a 4Ω resistor for 10 seconds. How much energy is dissipated?

Accepted Answer

360 J

Answer

120 J

Answer

36 J

Answer

1200 J

Question 4

Norton's theorem converts a network to which equivalent?

Accepted Answer

A current source in parallel with a resistance

Answer

A voltage source in series with a resistance

Answer

Two current sources in parallel

Answer

A resistor and capacitor in series

Question 5

In a current divider with two parallel resistors R1=4Ω and R2=12Ω and total current IT=8A, what current flows through R1?

Accepted Answer

6A

Answer

2A

Answer

4A

Answer

8A

Question 6

The superposition theorem applies only to circuits that are:

Accepted Answer

Linear and bilateral

Answer

Nonlinear and unilateral

Answer

Purely resistive only

Answer

DC only

Question 7

Maximum power transfer from a source to a load occurs when load resistance equals:

Accepted Answer

The source's internal (Thevenin) resistance

Answer

Zero ohms

Answer

Twice the source resistance

Answer

Infinite resistance