111 free practice questions for this exam, each with the reason for the answer and where to look it up.
10 questions, graded as you go, with the reason for every answer. No sign-up.
| Exam | General Radiotelephone Operator License (Elements 1 and 3) |
|---|---|
| Who runs it | FCC |
| Where | United States |
Question count, time limit and pass mark differ by where you take it. Check the official candidate bulletin from the organisation that runs your exam.
A half-wave dipole is strung parallel to the ground. What is the polarization of its signal?
C. Horizontal
Polarization follows the orientation of the radiating element's electric field, so a horizontal wire radiates a horizontally polarized wave. Turning the same dipole upright would make it vertical.
Reference: Antenna fundamentals: polarization
What are the two leads of a semiconductor diode called, and how is one of them often marked?
B. Anode and cathode; a stripe marks the cathode
A diode has an anode and a cathode, and the band printed on the body identifies the cathode end. Emitter, collector, source and drain are transistor terminals.
Reference: Electronic components: diodes
The henry is the unit of which electrical property?
A. Inductance
Inductance is measured in henrys. Capacitance, the property most often swapped with it, is measured in farads.
Reference: Basic electrical units
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Aviation mechanic General · Remote pilot (Part 107) · Private pilot knowledge test