ISCET Electronic Components & Circuit Analysis 2

Question 1

What happens to the total capacitance when capacitors are connected in series?

Accepted Answer

Total capacitance decreases

Answer

Capacitors in series have a total capacitance less than the smallest individual capacitor, calculated by the reciprocal sum formula.

Question 2

A zener diode is primarily used in circuits for:

Accepted Answer

Voltage regulation

Answer

Zener diodes are designed to operate in reverse breakdown to maintain a stable reference voltage.

Question 3

In an RL circuit, the time constant τ is defined as:

Accepted Answer

L / R

Answer

The time constant of an RL circuit is τ = L/R, representing the time for current to reach approximately 63.2% of its final value.

Question 4

Which type of transistor configuration provides the highest voltage gain?

Accepted Answer

Common emitter

Answer

The common emitter configuration provides the highest voltage gain among the three BJT configurations.

Question 5

A 100 mH inductor carries 2 A of current. What is the energy stored in the inductor?

Accepted Answer

0.2 J

Answer

Energy stored in an inductor is W = ½LI² = ½ × 0.1 × 4 = 0.2 J.

(ISCET) International Society of Certified Electronics Technicians Practice Test