USPS 943 FINAL EXAM SCRIPT 2026
COMPLETE QUESTIONS WITH CORRECT
ANSWERS GUARANTEED SUCCESS GRADED
A+
⩥ What are the leads of an N-MOSFET?
Answer: Gate, Drain, and Source.
⩥ What is the typical voltage drop across a BJT when it conducts?
Answer: Approximately 0.7 VDC for silicon and 0.3 VDC for
germanium.
⩥ What is the primary use of a transistor?
Answer: As an amplifier in electronic circuits.
⩥ What is the difference between average voltage and effective (RMS)
voltage?
Answer: Average voltage is measured over a half cycle, while effective
voltage is measured over an entire period.
⩥ What is the role of capacitors in full wave rectification?
Answer: To act as AC filters for a purer DC signal.
,⩥ What is the effect of inductors in an AC circuit?
Answer: They resist current, causing a phase difference where voltage
leads current.
⩥ What happens to the voltage and current in a circuit with AC?
Answer: Both voltage and current fluctuate as the AC sinusoidal wave
fluctuates.
⩥ What are the two types of capacitors mentioned for motor
applications?
Answer: Motor-starting capacitors (non-polarized electrolytic) and
running capacitors (paper or plastic film dielectric types).
⩥ What is the significance of the 'Truth Table' in logic gates?
Answer: It provides a binary count comparison of the inputs to the gate
and the output produced.
⩥ What is the common voltage supply for logic gates?
Answer: Usually 5VDC.
⩥ What is the effect of static discharge on electronic components?
Answer: It can damage the components.
, ⩥ What are phototransistors used for?
Answer: They are used in electronic control devices and can be turned
on with light as well as electricity.
⩥ What applications are enhanced MOSFET transistors commonly used
for?
Answer: They are used as electronic switches in both high power
applications and low power applications such as logic gates.
⩥ What materials can transistors be made from?
Answer: Transistors are usually made from silicon, but can also be made
from germanium or gallium arsenide.
⩥ What does N and P denote in a bipolar transistor?
Answer: N and P denote the polarity of the transistor.
⩥ What is the forward active region in a bipolar transistor?
Answer: In this region, the emitter to base junction is forward biased and
the base to collector junction is reverse biased.
⩥ What happens in the saturation region of a bipolar transistor?
Answer: Both junctions are forward biased, leading to high current
conduction from the emitter to the collector.
COMPLETE QUESTIONS WITH CORRECT
ANSWERS GUARANTEED SUCCESS GRADED
A+
⩥ What are the leads of an N-MOSFET?
Answer: Gate, Drain, and Source.
⩥ What is the typical voltage drop across a BJT when it conducts?
Answer: Approximately 0.7 VDC for silicon and 0.3 VDC for
germanium.
⩥ What is the primary use of a transistor?
Answer: As an amplifier in electronic circuits.
⩥ What is the difference between average voltage and effective (RMS)
voltage?
Answer: Average voltage is measured over a half cycle, while effective
voltage is measured over an entire period.
⩥ What is the role of capacitors in full wave rectification?
Answer: To act as AC filters for a purer DC signal.
,⩥ What is the effect of inductors in an AC circuit?
Answer: They resist current, causing a phase difference where voltage
leads current.
⩥ What happens to the voltage and current in a circuit with AC?
Answer: Both voltage and current fluctuate as the AC sinusoidal wave
fluctuates.
⩥ What are the two types of capacitors mentioned for motor
applications?
Answer: Motor-starting capacitors (non-polarized electrolytic) and
running capacitors (paper or plastic film dielectric types).
⩥ What is the significance of the 'Truth Table' in logic gates?
Answer: It provides a binary count comparison of the inputs to the gate
and the output produced.
⩥ What is the common voltage supply for logic gates?
Answer: Usually 5VDC.
⩥ What is the effect of static discharge on electronic components?
Answer: It can damage the components.
, ⩥ What are phototransistors used for?
Answer: They are used in electronic control devices and can be turned
on with light as well as electricity.
⩥ What applications are enhanced MOSFET transistors commonly used
for?
Answer: They are used as electronic switches in both high power
applications and low power applications such as logic gates.
⩥ What materials can transistors be made from?
Answer: Transistors are usually made from silicon, but can also be made
from germanium or gallium arsenide.
⩥ What does N and P denote in a bipolar transistor?
Answer: N and P denote the polarity of the transistor.
⩥ What is the forward active region in a bipolar transistor?
Answer: In this region, the emitter to base junction is forward biased and
the base to collector junction is reverse biased.
⩥ What happens in the saturation region of a bipolar transistor?
Answer: Both junctions are forward biased, leading to high current
conduction from the emitter to the collector.
