Extra exam question E2A06
Subelement E2, OPERATING PROCEDURES· Group E2A
E2A06
What are Keplerian elements?
- A.Parameters that define the orbit of a satellite (correct answer)
- B.Phase reversing elements in a Yagi antenna
- C.High-emission heater filaments used in magnetron tubes
- D.Encrypting codes used for spread spectrum modulation
WhyKeplerian elements are the set of parameters that define a satellite's orbit. Keplerian elements are the set of numerical parameters, derived from Kepler's laws of orbital motion, that fully describe a satellite's orbit: its shape, size, orientation, and position over time, answer A. They have nothing to do with Yagi phasing elements, magnetron heater filaments, or spread spectrum encryption, those are unrelated antenna, tube, and modulation concepts.
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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