Postal Exam 955 Practice Questions - USPS Postal Exam 955 - Maintenance Selection System (Technical Maintenance) Exam - Postal Exam 955 Practice Questions - USPS Postal Exam 955 - Maintenance Selection System (Technical Maintenance) Exam

Question 1

Which truth-table output describes a 2-input AND gate?

Output is 1 only when both inputs are 0 Output is 1 only when both inputs are 1 Output is 1 when at least one input is 1 Output is 0 when both inputs are equal

Correct Answer:

Output is 1 only when both inputs are 1

Question 2

A NAND gate's output is the equivalent of which combination?

An OR followed by an inverter An AND followed by an inverter Two inverters in parallel An XOR followed by an AND

Correct Answer:

An AND followed by an inverter

Question 3

On a schematic, the symbol of a triangle pointing into a vertical line with a perpendicular bar represents which device?

Resistor Diode Capacitor Inductor

Correct Answer:

Diode

Question 4

A diode is forward-biased when:

The anode is more negative than the cathode The cathode is more positive than the anode The anode is more positive than the cathode by at least the forward-voltage drop Both anode and cathode are at the same potential

Correct Answer:

The anode is more positive than the cathode by at least the forward-voltage drop

Question 5

An NPN transistor is in saturation when:

Base-emitter junction is reverse-biased Both junctions are reverse-biased Both base-emitter and base-collector junctions are forward-biased Collector-emitter voltage equals the supply

Correct Answer:

Both base-emitter and base-collector junctions are forward-biased

Question 1

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Prepare with the Postal Exam 955 Practice Questions - USPS Postal Exam 955 - Maintenance Selection System (Technical Maintenance) Exam practice quiz. This question bank includes 100 questions covering circuit, schematic, usps, gate, and symbol. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Postal Exam 955 Practice Questions - USPS Postal Exam 955 - Maintenance Selection System (Technical Maintenance) Exam

This practice set contains 100 questions from the matching question bank and focuses on circuit, schematic, usps, gate, and symbol. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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Postal Exam 955 Practice Questions - USPS Postal Exam 955 - Maintenance Selection System (Technical Maintenance) Exam

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