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NEIEP 600 FINAL EXAM 2026 ACTUAL QUESTIONS WITH VERIFIED ANSWERS.
Typology: Exams
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A diode allows current to flow in: - ANSWER-One direction A diode is forward biased when the anode is: - ANSWER- Positive relative to the cathode A diode is reverse biased when the cathode is: - ANSWER- Positive relative to the anode A half-wave rectifier uses: - ANSWER-One diode A full-wave rectifier uses: - ANSWER-Two diodes A bridge rectifier uses: - ANSWER-Four diodes
The output of a half-wave rectifier contains: - ANSWER-One half of the AC cycle The output of a full-wave rectifier contains: - ANSWER-Both halves of the AC cycle Ripple voltage is defined as: - ANSWER-AC variation on DC output Filtering is used to: - ANSWER-Reduce ripple voltage Increasing filter capacitance will: - ANSWER-Reduce ripple A transformer is used to: - ANSWER-Change voltage levels A power supply converts: - ANSWER-AC to DC
in a SCR. Holding current is the minimum current required to: - ANSWER-Keep the SCR conducting A TRIAC conducts during: - ANSWER-Both halves of the AC cycle A DIAC is used to: - ANSWER-Trigger a TRIAC Phase control regulates power by: - ANSWER-Delaying the firing angle Increasing firing angle delay will: - ANSWER-Reduce output power An op-amp is used to: - ANSWER-Amplify voltage An op-amp has how many inputs: - ANSWER-Two
Negative feedback is used to: - ANSWER-Stabilize gain If feedback is lost in an op-amp, the output will: - ANSWER- Saturate A comparator output will be: - ANSWER-High or low only Logic gates operate using: - ANSWER-Binary values Binary logic uses which values: - ANSWER-0 and 1 An AND gate outputs HIGH when: - ANSWER-All inputs are HIGH An OR gate outputs HIGH when: - ANSWER-Any input is HIGH A NOT gate output is: - ANSWER-The inverse of the input
The rightmost bit in binary represents: - ANSWER-2 to the zero power Binary 1010 equals decimal: - ANSWER- 10 Binary 1111 equals decimal: - ANSWER- 15 Decimal 7 equals binary: - ANSWER- 111 A 4-bit binary number can represent: - ANSWER-16 values Binary addition of 1 + 1 equals: - ANSWER- 10 A flip-flop is used to: - ANSWER-Store binary data A clock signal is used to: - ANSWER-Synchronize digital circuits
A square wave is commonly used as a: - ANSWER-Clock signal Gray code is used to: - ANSWER-Prevent ambiguous transitions Voltage is defined as: - ANSWER-Electrical potential difference Current is defined as: - ANSWER-Flow of electrons Resistance is defined as: - ANSWER-Opposition to current flow Ohm's Law states: - ANSWER-Voltage equals current times resistance Electrical power equals: - ANSWER-Voltage times current
Capacitive reactance decreases as: - ANSWER-Frequency increases Inductive reactance increases as: - ANSWER-Frequency increases A short circuit causes: - ANSWER-Excessive current An open circuit causes: - ANSWER-No current flow A fuse protects a circuit by: - ANSWER-Opening during overcurrent RMS voltage represents: - ANSWER-Equivalent DC heating value Peak voltage equals RMS voltage times: - ANSWER-1.
If voltage is present but no current flows, suspect: - ANSWER- An open circuit If a fuse repeatedly blows, suspect: - ANSWER-A short circuit If equipment works when tapped, suspect: - ANSWER-A loose connection A relay coil has voltage but will not energize due to: - ANSWER-An open coil Relay chatter is usually caused by: - ANSWER-Low voltage If voltage drops under load, suspect: - ANSWER-A poor connection A motor that hums but does not turn likely has: - ANSWER- Mechanical binding or phase loss
