Fundamentals of Engineering Electrical Circuits and Systems 3

Question 1

What is the unit of electrical capacitance in the SI system?

Accepted Answer

Farad (F)

Answer

Capacitance is measured in Farads (F), named after Michael Faraday.

Question 2

In digital logic, what is the output of a NAND gate when both inputs are HIGH (1)?

Accepted Answer

0 (LOW)

Answer

A NAND gate outputs LOW (0) only when all inputs are HIGH (1); for all other combinations it outputs HIGH.

Question 3

What is the maximum power transfer theorem?

Accepted Answer

Maximum power is delivered to the load when the load resistance equals the source (Thevenin) resistance

Answer

The maximum power transfer theorem states that power to the load is maximized when R_L = R_th (load equals Thevenin resistance).

Question 4

What is the voltage divider formula for the voltage across R₂ in a series circuit of R₁ and R₂?

Accepted Answer

V₂ = V_s × R₂/(R₁ + R₂)

Answer

The voltage divider rule gives V₂ = V_s × R₂/(R₁ + R₂), proportional to the fraction of total resistance.

Question 5

In Boolean algebra, which law states that A + A·B = A?

Accepted Answer

Absorption law

Answer

The absorption law A + AB = A simplifies Boolean expressions by absorbing redundant terms.

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