General exam question G7A01
Subelement G7, PRACTICAL CIRCUITS· Group G7A
What is the function of a power supply bleeder resistor?
- A.It acts as a fuse for excess voltage
- B.It discharges the filter capacitors when power is removed (correct answer)
- C.It removes shock hazards from the induction coils
- D.It eliminates ground loop current
WhyA power supply bleeder resistor discharges the filter capacitors when power is removed. A power supply's bleeder resistor is wired across the filter capacitors specifically to drain their stored charge once the supply is switched off, so a technician working inside the chassis isn't met with a dangerous residual voltage, answer B. It isn't a fuse, doesn't address induction-coil shock hazards (a power supply's filter caps, not induction coils, are the real stored-energy hazard), and doesn't do anything about ground loop currents.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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