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Element 4

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 The speed of light is

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

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

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

#5 Give the decimal equivalent of a microfarad

#6 What is the capacitance of a 12 uF capacitor in parallel with a 6 uF capacitor?

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

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

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

#10 The frequency band used for shortwave radio broadcast is on

#11 What is the terminal voltage of an ordinary dry cell battery?

#12 What is the symbol of Inductance?

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

#14 What is the second harmonic of 1200 Hz?

#15 Two identical resistors valued at 1000 ohms are connected in series. They are further connected to a 220 V source. What current passes through the resistors?

#16 The resistance of an open circuit.

#17 Three cells, each with an EMF of 1.5 and an internal resistance of 0.3 ohms, are connected in series, and a resistance of 14.1 ohms is connected across the group. How much current flows in the circuit?

#18 Spectrum analyzers are used to present signals in the

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

#20 The extent of reflection of radio waves in a transmission line can be measured with a

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

#22 A frequency band where Audio Waves fall.

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

#24 The circuit element that opposes any change in voltage.

#25 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?