Practice the published Technician licence exam questions

T6A01

What electrical component opposes the flow of current in a DC circuit?

1. A. Inductor
2. B. Resistor
3. C. Inverter
4. D. Transformer

T6A02

What type of component is often used as an adjustable volume control?

1. A. Fixed resistor
2. B. Power resistor
3. C. Potentiometer
4. D. Transformer

T6A03

What electrical parameter is controlled by a potentiometer?

1. A. Inductance
2. B. Resistance
3. C. Capacitance
4. D. Field strength

T6A04

What electrical component stores energy in an electric field?

1. A. Resistor
2. B. Capacitor
3. C. Inductor
4. D. Diode

T6A05

What type of electrical component consists of conductive surfaces separated by an insulator?

1. A. Resistor
2. B. Potentiometer
3. C. Oscillator
4. D. Capacitor

T6A06

What type of electrical component stores energy in a magnetic field?

1. A. Resistor
2. B. Capacitor
3. C. Inductor
4. D. Diode

T6A07

What electrical component is typically constructed as a coil of wire?

1. A. Transistor
2. B. Capacitor
3. C. Diode
4. D. Inductor

T6A08

What is the function of an SPDT switch?

1. A. A single circuit is opened or closed
2. B. Two circuits are opened or closed
3. C. A single circuit is switched between one of two other circuits
4. D. Two circuits are each switched between one of two other circuits

T6A09

What type of switch is represented by component 3 in figure T-2?

1. A. Single-pole single-throw
2. B. Single-pole double-throw
3. C. Double-pole single-throw
4. D. Double-pole double-throw

T6A10

Which of the following battery chemistries is rechargeable?

1. A. Nickel-metal hydride
2. B. Lithium-ion
3. C. Lead-acid
4. D. All these choices are correct

T6A11

Which of the following battery chemistries is not rechargeable?

1. A. Nickel-cadmium
2. B. Carbon-zinc
3. C. Lead-acid
4. D. Lithium-ion

T6B01

Which is true about forward voltage drop in a diode?

1. A. It is lower in some diode types than in others
2. B. It is proportional to peak inverse voltage
3. C. It indicates that the diode is defective
4. D. It has no impact on the voltage delivered to the load

T6B02

What electronic component allows current to flow in only one direction?

1. A. Resistor
2. B. Fuse
3. C. Diode
4. D. Driven element

T6B03

Which of these components can be used as an electronic switch?

1. A. Varistor
2. B. Potentiometer
3. C. Transistor
4. D. Thermistor

T6B04

Which of the following components can consist of three regions of semiconductor material?

1. A. Alternator
2. B. Transistor
3. C. Triode
4. D. Pentode

T6B05

What type of transistor has a gate, drain, and source?

1. A. Varistor
2. B. Field-effect
3. C. Hall-effect
4. D. Bipolar junction

T6B06

How is the cathode lead of a semiconductor diode often marked on the package?

1. A. With the word "cathode"
2. B. With a stripe
3. C. With the letter C
4. D. With the letter K

T6B07

What causes a light-emitting diode (LED) to emit light?

1. A. Forward current
2. B. Reverse current
3. C. Capacitively-coupled RF signal
4. D. Inductively-coupled RF signal

T6B08

What does the abbreviation FET stand for?

1. A. Frequency Emission Transmitter
2. B. Fast Electron Transistor
3. C. Free Electron Transmitter
4. D. Field Effect Transistor

T6B09

What are the names for the electrodes of a diode?

1. A. Plus and minus
2. B. Source and drain
3. C. Anode and cathode
4. D. Gate and base

T6B10

Which of the following can provide power gain?

1. A. Transformer
2. B. Transistor
3. C. Reactor
4. D. Resistor

T6B11

What does the term gain mean in amplifiers?

1. A. The output signal voltage relative to the input signal voltage
2. B. The output signal current relative to the input signal current
3. C. The output signal power relative to the input signal power
4. D. All these choices are correct

T6B12

What are the names of the electrodes of a bipolar junction transistor?

1. A. Signal, bias, power
2. B. Emitter, base, collector
3. C. Input, output, supply
4. D. Pole one, pole two, output

T6C01

What is an electrical diagram using standard component symbols called?

1. A. Connection chart
2. B. Instrumentation system
3. C. Schematic
4. D. Flow chart

T6C02

What is component 1 in figure T-1?

1. A. Resistor
2. B. Transistor
3. C. Battery
4. D. Connector

T6C03

What is component 2 in figure T-1?

1. A. Resistor
2. B. Transistor
3. C. Indicator lamp
4. D. Connector

T6C04

What is component 3 in figure T-1?

1. A. Resistor
2. B. Transistor
3. C. Lamp
4. D. Ground symbol

T6C05

What is component 4 in figure T-1?

1. A. Resistor
2. B. Transistor
3. C. Ground symbol
4. D. Battery

T6C06

What is component 6 in figure T-2?

1. A. Resistor
2. B. Capacitor
3. C. Regulator IC
4. D. Transistor

T6C07

What is component 8 in figure T-2?

1. A. Resistor
2. B. Inductor
3. C. Regulator IC
4. D. Light emitting diode

T6C08

What is component 9 in figure T-2?

1. A. Variable capacitor
2. B. Variable inductor
3. C. Variable resistor
4. D. Variable transformer

T6C09

What is component 4 in figure T-2?

1. A. Variable inductor
2. B. Double-pole switch
3. C. Potentiometer
4. D. Transformer

T6C10

What is component 3 in figure T-3?

1. A. Connector
2. B. Meter
3. C. Variable capacitor
4. D. Variable inductor

T6C11

What is component 4 in figure T-3?

1. A. Antenna
2. B. Transmitter
3. C. Dummy load
4. D. Ground

T6C12

Which of the following is accurately represented in electrical schematics?

1. A. Wire lengths
2. B. Physical appearance of components
3. C. Component connections
4. D. All these choices are correct

T6D01

Which of the following devices or circuits changes an alternating current into a varying direct current signal?

1. A. Transformer
2. B. Rectifier
3. C. Amplifier
4. D. Reflector

T6D02

What is a relay?

1. A. An electrically-controlled switch
2. B. A current-controlled amplifier
3. C. An inverting amplifier
4. D. A pass transistor

T6D03

Which of the following is a reason to use shielded wire?

1. A. To decrease the resistance of DC power connections
2. B. To increase the current carrying capability of the wire
3. C. To prevent coupling of unwanted signals to or from the wire
4. D. To reduce receiver overload

T6D04

Which of the following displays an electrical quantity as a numeric value?

1. A. Potentiometer
2. B. Transistor
3. C. Meter
4. D. Relay

T6D05

What type of circuit controls the amount of voltage from a power supply?

1. A. Regulator
2. B. Oscillator
3. C. Filter
4. D. Phase inverter

T6D06

What component changes 120 V AC power to a lower AC voltage for other uses?

1. A. Variable capacitor
2. B. Transformer
3. C. Transistor
4. D. Diode

T6D07

Which of the following is commonly used as a visual indicator?

1. A. LED
2. B. FET
3. C. Zener diode
4. D. All these choices are correct

T6D08

Which of the following is combined with an inductor to make a resonant circuit?

1. A. Resistor
2. B. Zener diode
3. C. Potentiometer
4. D. Capacitor

T6D09

What is the name of a device that combines several semiconductors and other components into one package?

1. A. Transducer
2. B. Multi-pole relay
3. C. Integrated circuit
4. D. Transformer

T6D10

What is the function of component 2 in figure T-1?

1. A. Give off light when current flows through it
2. B. Supply electrical energy
3. C. Control the flow of current
4. D. Convert electrical energy into radio waves

T6D11

Which of the following is a resonant or tuned circuit?

1. A. An inductor and a capacitor in series or parallel
2. B. A linear voltage regulator
3. C. A resistor circuit used for reducing standing wave ratio
4. D. A circuit designed to provide high-fidelity audio