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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

Results

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#1 The speed of light is

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

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

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

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

#6 If two resistors valued at 20 ohms and 30 ohms, respectively, are connected in parallel, the total equivalent resistance is

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

#8 The quantity 144.474 MHz refers to the ___________ of a radio wave.

#9 An instrument which is designed to produce a range of frequencies in the AF and RF bands in known as

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

#11 What is the term used for the phenomenon where most of the radio frequency current flows along the surface of the conductor?

#12 The resistance of an open circuit.

#13 0.000001 Farad can also be written as

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

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

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

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

#18 Yellow, Orange, Brown

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

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

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

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

#23 Audio waves operate within the band.

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

#25 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?

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