The rate that the transmitted VOR variable...

The rate that the transmitted VOR variable signal rotates is equivalent to how many revolutions per second?

🔍 Key Concepts

• Understand how a VOR (VHF Omnidirectional Range) produces its variable signal using a rotating phase reference • Relate revolutions per second to revolutions per minute (rpm) to judge whether a number is realistic for a mechanical/electronic rotation rate • Compare the given rates to typical aircraft navigation aid design limits and what’s practical for signal processing

💭 Think About

• Which of these values would produce an unrealistically fast change in bearing indication for a pilot using the VOR? • If you convert each option from revolutions per second to revolutions per minute, which one falls into a range that seems technically reasonable for a reference rotation? • Think about the purpose of the rotating variable signal: what sort of rotation speed would give a smooth, trackable indication rather than a blur?

✅ Before You Answer

• Convert each answer choice from rev/second to rev/minute (rpm) and compare how extreme each value is • Ask whether aircraft instruments and VOR receivers could realistically handle a reference that rotates thousands of times per second • Eliminate options that would make the VOR bearing pointer spin so fast that it would be unusable to a human pilot