Disclaimer: We made a question pool available to the public to test their readiness to take the NTC Amateur Radio Exam. The question provided herein are taken from various review materials and are not the actual questions given by the NTC. These questions are only for review purposes. By answering these sample questions, you hereby agree to free CHARL from any accountabilities or liabilities resulting from the use or misuse of these materials. 73’s!
Note: As per rules, the examinee must obtain an average of at least 70% of the 3 elements per class, with no score below 50% in any of the elements. We provided a 40-minute limit to answer each element to simulate actual exam conditions.
Class “C” (Technician Class), Element 4
QUIZ START
#1. Ten times the logarithm of the ratio of the output power over the input power is
#2. What SWR among those mentioned shows the worst impedance match between transmission line and antenna?
#3. To effect maximum transfer of power from the final output stage of a transmitter to the antenna, there must be
#4. If two resistors valued at 20 ohms and 30 ohms, respectively, are connected in parallel, the total equivalent resistance is
#5. Four identical capacitors rated at 40 uf are connected in series. Their total equiv. capacitance is
#6. What is the test instrument used to measure resistance with value less than one ohm?
#7. The radiation intensity of an antenna is measured with
#8. If the operating frequency is 150 MHz, the wavelength is
#9. What is the symbol of Reactance?
#10. The speed of light is
#11. If the transmitter output is not matched with the antenna, what must be the effect aside from reduced power?
#12. What is the term used for the phenomenon where most of the radio frequency current flows along the surface of the conductor?
#13. Two identical inductors valued at 60 henrys are connected in series, the total equiv. inductance is
#14. A current of 3 A flows through a resistor of 160 ohms. How much power is expended in the resistor?
#15. The extent of reflection of radio waves in a transmission line can be measured with a
#16. The equipment is a simple audio amplifier with high impedance input used to “hear” a signal in a circuit.
#17. The circuit element that opposes any change in voltage.
#18. 0.000001 Farad can also be written as
#19. The opposition of a conductor to the flow of electric current.
#20. A voltmeter connected across a resistance reads 52V and an ammeter connected in series with the resistance reads 1.3A. What is the value of the resistance?
#21. Yellow, Orange, Brown
#22. Give the decimal equivalent of a microfarad
#23. Hams must regularly tune their transceivers. This must be done using ____ to ensure no interference to other users of the band.
#24. A frequency band where Audio Waves fall.
#25. What is the symbol of Inductance?
