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. A frequency band where Audio Waves fall.
#2. The location of an interfering station can be pinpointed by using direction finders and utilizing
#3. What is the symbol of Inductance?
#4. The extent of reflection of radio waves in a transmission line can be measured with a
#5. The equipment is a simple audio amplifier with high impedance input used to “hear” a signal in a circuit.
#6. What is the term used for the phenomenon where most of the radio frequency current flows along the surface of the conductor?
#7. The interference brought about by the resultant signal from addition and subtraction of two or more signals is called
#8. A current of 3 A flows through a resistor of 160 ohms. How much power is expended in the resistor?
#9. An electrical circuit with equal reactances is said to be
#10. Ten times the logarithm of the ratio of the output power over the input power is
#11. What is the symbol of Resistance?
#12. What is the second harmonic of 1200 Hz?
#13. The resistance of an open circuit.
#14. If two resistors valued at 20 ohms and 30 ohms, respectively, are connected in parallel, the total equivalent resistance is
#15. Give the decimal equivalent of a microfarad
#16. What is the power of transmitter with voltmeter reading of 1100 volts and 500 mA?
#17. If the transmitter output is not matched with the antenna, what must be the effect aside from reduced power?
#18. To stimulate speech signal, this test is used.
#19. Yellow, Orange, Brown
#20. Hams must regularly tune their transceivers. This must be done using ____ to ensure no interference to other users of the band.
#21. If the operating frequency is 150 MHz, the wavelength is
#22. The quantity 144.474 MHz refers to the ___________ of a radio wave.
#23. The frequency band used for shortwave radio broadcast is on
#24. What is the terminal voltage of an ordinary dry cell battery?
#25. Spectrum analyzers are used to present signals in the
