Sunday, January 29Please join our Nightly Net at 145.000 MHz -600 KHz (Duplex)

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


Share your score!
Tweet your score!

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

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

#3 An electrical circuit with equal reactances is said to be

#4 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?

#5 A frequency band where Audio Waves fall.

#6 No. 16 copper wire has a resistance of 0.85 ohms per 1 meter. What is the resistance of 2 kilometer of this wire?

#7 What is the symbol of Reactance?

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

#9 The power formula is

#10 The radiation intensity of an antenna is measured with

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

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

#13 What is the symbol of Inductance?

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

#15 If the frequency is 400 Mhz, what is the wavelength?

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

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

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

#19 Spectrum analyzers are used to present signals in the

#20 Audio waves operate within the band.

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

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

#23 Give the decimal equivalent of a microfarad

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

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