Extra exam question E7D05
Subelement E7, PRACTICAL CIRCUITS· Group E7D
Which of the following types of linear voltage regulator operates by loading the unregulated voltage source?
- A.A constant current source
- B.A series regulator
- C.A shunt current source
- D.A shunt regulator (correct answer)
WhyA shunt regulator is the type of linear voltage regulator that operates by loading the unregulated voltage source. A shunt regulator maintains its output voltage by drawing a variable amount of current in parallel with (loading) the unregulated source, effectively acting as an adjustable load that absorbs whatever excess current isn't needed by the actual load, keeping the voltage constant, answer D. A constant current source, series regulator, and shunt current source don't work by this same loading-the-source mechanism.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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