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Element 4

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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


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#1 Two identical inductors valued at 60 henrys are connected in series, the total equiv. inductance is

#2 A frequency band where Audio Waves fall.

#3 Audio waves operate within the band.

#4 What is the symbol of Inductance?

#5 The interference brought about by the resultant signal from addition and subtraction of two or more signals is called

#6 What is the power of transmitter with voltmeter reading of 1100 volts and 500 mA?

#7 To effect maximum transfer of power from the final output stage of a transmitter to the antenna, there must be

#8 A current of 3 A flows through a resistor of 160 ohms. How much power is expended in the resistor?

#9 The two-tone test is used in SSB transmitter to

#10 What is the second harmonic of 1200 Hz?

#11 What is the test instrument used to measure resistance with value less than one ohm?

#12 The location of an interfering station can be pinpointed by using direction finders and utilizing

#13 The equipment is a simple audio amplifier with high impedance input used to “hear” a signal in a circuit.

#14 If the transmitter output is not matched with the antenna, what must be the effect aside from reduced power?

#15 In order to be sure that the amateur radio station is operating within the authorized band limits, the licensed amateur must use

#16 Four identical capacitors rated at 40 uf are connected in series. Their total equiv. capacitance is

#17 Hams must regularly tune their transceivers. This must be done using ____ to ensure no interference to other users of the band.

#18 The opposition of a conductor to the flow of electric current.

#19 Ten times the logarithm of the ratio of the output power over the input power is

#20 An electrical circuit with predominantly inductive reactance has a(n)

#21 Brown, Yellow, Red

#22 The power formula is

#23 To stimulate speech signal, this test is used.

#24 The speed of light is

#25 If the operating frequency is 150 MHz, the wavelength is