Electronic Components & Circuit Analysis Flashcards
7 cards from real ISCET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Electronic Components & Circuit Analysis flashcards as text
What happens to the total capacitance when capacitors are connected in series?
Answer: Total capacitance decreases
Capacitors in series have a total capacitance less than the smallest individual capacitor, calculated by the reciprocal sum formula.
A zener diode is primarily used in circuits for:
Answer: Voltage regulation
Zener diodes are designed to operate in reverse breakdown to maintain a stable reference voltage.
In an RL circuit, the time constant τ is defined as:
Answer: L / R
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.
Which type of transistor configuration provides the highest voltage gain?
Answer: Common emitter
The common emitter configuration provides the highest voltage gain among the three BJT configurations.
A 100 mH inductor carries 2 A of current. What is the energy stored in the inductor?
Answer: 0.2 J
Energy stored in an inductor is W = ½LI² = ½ × 0.1 × 4 = 0.2 J.
What is the function of a bypass capacitor in an amplifier circuit?
Answer: Short-circuit the emitter resistor at AC frequencies
A bypass capacitor placed across the emitter resistor shorts it at AC frequencies, increasing the AC voltage gain.
Which statement correctly describes a depletion-mode MOSFET?
Answer: It conducts at zero gate-to-source voltage
A depletion-mode MOSFET has a physical channel and is normally on (conducting) when VGS = 0.