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Technician Class Exam Question Pool

effective 7/01/2014 thru 6/30/2018

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T7D-2014: Basic repair and testing: soldering; using basic test instruments; connecting a voltmeter, ammeter, or ohmmeter

T7D01-2014: Which instrument would you use to measure electric potential or electromotive force?

A voltmeter

An ammeter

A wavemeter

An ohmmeter



T7D02-2014: What is the correct way to connect a voltmeter to a circuit?

In parallel with the circuit

In series with the circuit

In quadrature with the circuit

In phase with the circuit



T7D03-2014: How is an ammeter usually connected to a circuit?

In series with the circuit

In parallel with the circuit

In quadrature with the circuit

In phase with the circuit



T7D04-2014: Which instrument is used to measure electric current?

An ammeter

An ohmmeter

A wavemeter

A voltmeter



T7D05-2014: What instrument is used to measure resistance?

An ohmmeter

An oscilloscope

A spectrum analyzer

A noise bridge



T7D06-2014: Which of the following might damage a multimeter?

Attempting to measure voltage when using the resistance setting

Measuring a voltage too small for the chosen scale

Leaving the meter in the milliamps position overnight

Not allowing it to warm up properly



T7D07-2014: Which of the following measurements are commonly made using a multimeter?

Voltage and resistance

SWR and RF power

Signal strength and noise

Impedance and reactance



T7D08-2014: Which of the following types of solder is best for radio and electronic use?

Rosin-core solder

Acid-core solder

Silver solder

Aluminum solder



T7D09-2014: What is the characteristic appearance of a cold solder joint?

A grainy or dull surface

Dark black spots

A bright or shiny surface

A greenish tint



T7D10-2014: What is probably happening when an ohmmeter, connected across an unpowered circuit, initially indicates a low resistance and then shows increasing resistance with time?

The circuit contains a large capacitor

The ohmmeter is defective

The circuit contains a large inductor

The circuit is a relaxation oscillator



T7D11-2014: Which of the following precautions should be taken when measuring circuit resistance with an ohmmeter?

Ensure that the circuit is not powered

Ensure that the applied voltages are correct

Ensure that the circuit is grounded

Ensure that the circuit is operating at the correct frequency



T7D12-2014: Which of the following precautions should be taken when measuring high voltages with a voltmeter?

Ensure that the voltmeter and leads are rated for use at the voltages to be measured

Ensure that the voltmeter has very low impedance

Ensure that the circuit is grounded through the voltmeter

Ensure that the voltmeter is set to the correct frequency





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T7C-2014: Antenna measurements and troubleshooting: measuring SWR; dummy loads; coaxial cables; feed line failure modes
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Technician Class Exam Question Pool
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T8A-2014: Modulation modes: bandwidth of various signals; choice of emission type
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