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RIC-7 — Basic Qualification Question Bank for Amateur Radio Operator Certificate Examinations

B-004-01-01 (1)
A circuit designed to increase the level of its input signal is called:

  • an amplifier
  • a modulator
  • an oscillator
  • a receiver

B-004-01-02 (1)
If an amplifier becomes non- linear, the output signal would:

  • become distorted
  • be saturated
  • cause oscillations
  • overload the power supply

B-004-01-03 (3)
To increase the level of very weak radio signals from an antenna, you would use:

  • an RF oscillator
  • an audio oscillator
  • an RF amplifier
  • an audio amplifier

B-004-01-04 (3)
To increase the level of very weak signals from a microphone you would use:

  • an RF oscillator
  • an RF amplifier
  • an audio amplifier
  • an audio oscillator

B-004-01-05 (4)
The range of frequencies to be amplified by a speech amplifier is typically:

  • 3 to 300 Hz
  • 300 to 1000 Hz
  • 40 to 40 000 Hz
  • 300 to 3400 Hz

B-004-01-06 (2)
Which of the following is not amplified by an amplifier?

  • current
  • resistance
  • power
  • voltage

B-004-01-07 (4)
The increase in signal level by an amplifier is called:

  • attenuation
  • amplitude
  • modulation
  • gain

B-004-01-08 (4)
A device with gain has the property of:

  • attenuation
  • oscillation
  • modulation
  • amplification

B-004-01-09 (4)
A device labelled "Gain = 10 dB" is likely to be an:

  • attenuator
  • oscillator
  • audio fader
  • amplifier

B-004-01-10 (2)
Amplifiers can amplify:

  • current, power, or inductance
  • voltage, current, or power
  • voltage, power, or inductance
  • voltage, current, or inductance
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B-004-01-11 (4)
Which of the following is not a property of an amplifier?

  • gain
  • linearity
  • distortion
  • loss

B-004-02-01 (2)
Zener diodes are used as:

  • current regulators
  • voltage regulators
  • RF detectors
  • AF detectors

B-004-02-02 (4)
One important application for diodes is recovering information from transmitted signals. This is referred to as:

  • regeneration
  • ionization
  • biasing
  • demodulation

B-004-02-03 (2)
The primary purpose of a Zener diode is to:

  • provide a voltage phase shift
  • regulate or maintain a constant voltage
  • to boost the power supply voltage
  • provide a path through which current can flow

B-004-02-04 (2)
The action of changing alternating current to direct current is called:

  • amplification
  • rectification
  • transformation
  • modulation

B-004-02-05 (2)
The electrodes of a semi- conductor diode are known as:

  • gate and source
  • anode and cathode
  • collector and base
  • cathode and drain

B-004-02-06 (3)
If alternating current is applied to the anode of a diode, what would you expect to see at the cathode?

  • No signal
  • Steady direct current
  • Pulsating direct current
  • Pulsating alternating current

B-004-02-07 (4)
In a semi-conductor diode, electrons flow from:

  • anode to cathode
  • cathode to grid
  • grid to anode
  • cathode to anode

B-004-02-08 (1)
What semi-conductor device glows red, yellow, or green, depending upon its chemical composition?

  • A light-emitting diode
  • A fluorescent bulb
  • A neon bulb
  • A vacuum diode

B-004-02-09 (4)
Voltage regulation is the principal application of the:

  • junction diode
  • light-emitting diode
  • vacuum diode
  • Zener diode
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B-004-02-10 (2)
In order for a diode to conduct, it must be:

  • close coupled
  • forward-biased
  • enhanced
  • reverse-biased

B-004-03-01 (2)
Which component can amplify a small signal using low voltages?

  • A variable resistor
  • An electrolytic capacitor
  • A multiple-cell battery
  • A PNP transistor

B-004-03-02 (3)
The basic semi-conductor amplifying device is the:

  • tube
  • P-N junction
  • transistor
  • diode

B-004-03-03 (2)
The three leads from a PNP transistor are named:

  • drain, base and source
  • collector, emitter and base
  • collector, source and drain
  • gate, source and drain

B-004-03-04 (4)
If a low level signal is placed at the input to a transistor, a higher level of signal is produced at the output lead. This effect is know as:

  • detection
  • modulation
  • rectification
  • amplification

B-004-03-05 (2)
Bipolar transistors usually have:

  • 2 leads
  • 3 leads
  • 1 lead
  • 4 leads

B-004-03-06 (1)
A semi-conductor is described as a "general purpose audio NPN device". This would be:

  • a bipolar transistor
  • a silicon diode
  • a triode
  • an audio detector

B-004-03-07 (2)
The two basic types of bipolar transistors are:

  • diode and triode types
  • NPN and PNP types
  • varicap and zener types
  • P and N channel types

B-004-03-08 (1)
A transistor can be destroyed in a circuit by:

  • excessive heat
  • excessive light
  • saturation
  • cut-off

B-004-03-09 (2)
In a bipolar transistor, the _______ compares closest to the control grid of a triode vacuum tube.

  • emitter
  • base
  • source
  • collector
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B-004-03-10 (3)
In a bipolar transistor, the _______ compares closest to the plate of a triode vacuum tube.

  • gate
  • emitter
  • collector
  • base

B-004-03-11 (4)
In a bipolar transistor, the _______ compares closest to the cathode of a triode vacuum tube.

  • collector
  • base
  • drain
  • emitter

B-004-04-01 (4)
The two basic types of field effect transistors (FET) are:

  • NPN and PNP
  • germanium and silicon
  • inductive and capacitive
  • N and P channel

B-004-04-02 (2)
A semi-conductor having its leads labeled gate, drain, and source is best described as a:

  • gated transistor
  • field-effect transistor
  • bipolar transistor
  • silicon diode

B-004-04-03 (1)
In a field effect transistor, the _______ is the terminal that controls the conductance of the channel.

  • gate
  • drain
  • source
  • collector

B-004-04-04 (1)
In a field effect transistor, the _______ is the terminal where the charge carriers enter the channel.

  • source
  • gate
  • drain
  • emitter

B-004-04-05 (3)
In a field effect transistor, the _______ is the terminal where the charge carriers leave the channel.

  • collector
  • source
  • drain
  • gate

B-004-04-06 (3)
Which semi-conductor device has characteristics most similar to a triode vacuum tube?

  • Junction diode
  • Zener diode
  • Field effect transistor
  • Bipolar transistor

B-004-04-07 (1)
The control element in the field effect transistor is the:

  • gate
  • source
  • drain
  • base

B-004-04-08 (1)
If you wish to reduce the current flowing in a field effect transistor, you could:

  • increase the reverse bias voltage
  • decrease the reverse bias voltage
  • increase the forward bias voltage
  • increase the forward bias gain
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B-004-04-09 (2)
The source of a field effect transistor corresponds to the _______ of a bipolar transistor.

  • base
  • emitter
  • drain
  • collector

B-004-04-10 (2)
The drain of a field effect transistor corresponds to the _______ of a bipolar transistor.

  • base
  • collector
  • source
  • emitter

B-004-04-11 (4)
Which two elements in a field effect transistor exhibit fairly similar characteristics?

  • Source and gate
  • Gate and drain
  • Source and base
  • Source and drain

B-004-05-01 (2)
What is one reason a triode vacuum tube might be used instead of a transistor in a circuit?

  • It uses less current
  • It may be able to handle higher power
  • It is much smaller
  • It uses lower voltages

B-004-05-02 (1)
Which component can amplify a small signal but must use high voltages?

  • A vacuum tube
  • A transistor
  • An electrolytic capacitor
  • A multiple-cell battery

B-004-05-03 (2)
A feature common to tubes and transistors is that both:

  • have electrons drifting through a vacuum
  • can amplify signals
  • convert electrical energy to radio waves
  • use heat to cause electron movement

B-004-05-04 (2)
In a vacuum tube, the electrode that is operated with the highest positive potential is the _______.

  • filament (heater)
  • plate
  • cathode
  • grid

B-004-05-05 (2)
In a vacuum tube, the electrode that is usually a cylinder of wire mesh is the _______.

  • filament (heater)
  • grid
  • cathode
  • plate

B-004-05-06 (4)
In a vacuum tube, the element that is furthest away from the plate is the _______.

  • grid
  • emitter
  • cathode
  • filament (heater)

B-004-05-07 (1)
In a vacuum tube, the electrode that emits electrons is the _______.

  • cathode
  • grid
  • collector
  • plate
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B-004-05-08 (2)
What is inside the envelope of a triode tube?

  • argon
  • a vacuum
  • air
  • neon

B-004-05-09 (4)
How many grids are there in a triode vacuum tube?

  • two
  • three
  • three plus a filament
  • one

B-004-05-10 (2)
If you do not wish to have current flowing in the grid circuit of a vacuum tube, the grid should be:

  • positive with respect to the anode
  • negative with respect to the cathode
  • positive with respect to both cathode and anode
  • positive with respect to the cathode

B-004-05-11 (2)
The negative DC control voltage applied to the control grid of a vacuum tube is called:

  • suppression voltage
  • bias voltage
  • repulsion voltage
  • excitation voltage

B-004-06-01 (2)
How do you find a resistor's tolerance rating?

  • By using Thevenin's theorem for resistors
  • By reading the resistor's color code
  • By reading its Baudot code
  • By using a voltmeter

B-004-06-02 (3)
What do the first three-color bands on a resistor indicate?

  • The resistance material
  • The power rating in watts
  • The value of the resistor in ohms
  • The resistance tolerance in percent

B-004-06-03 (4)
What does the fourth color band on a resistor mean?

  • The value of the resistor in ohms
  • The power rating in watts
  • The resistance material
  • The resistance tolerance in percent

B-004-06-04 (1)
What are the possible values of a 100 ohm resistor with a 10% tolerance?

  • 90 to 110 ohms
  • 90 to 100 ohms
  • 10 to 100 ohms
  • 80 to 120 ohms

B-004-06-05 (1)
How do you find a resistor's value?

  • By using the resistor's color code
  • By using a voltmeter
  • By using Thevenin's theorem for resistors
  • By using the Baudot code

B-004-06-06 (4)
Which tolerance rating would a highquality resistor have?

  • 5%
  • 10%
  • 20%
  • 0.1%
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B-004-06-07 (1)
Which tolerance rating would a lowquality resistor have?

  • 20%
  • 0.1%
  • 5%
  • 10%

B-004-06-08 (2)
If a carbon resistor's temperature is increased, what will happen to the resistance?

  • It will stay the same
  • It will change depending on the resistor's temperature coefficient rating
  • It will become time dependent
  • It will increase by 20% for every 10 degrees centigrade

B-004-06-09 (3)
A gold band on a resistor indicates the tolerance is:

  • 20%
  • 10%
  • 5%
  • 1%

B-004-06-10 (1)
A resistor with a colour code of brown, black, and red, would have a value of:

  • 1000 ohms
  • 100 ohms
  • 10 ohms
  • 10 000 ohms

B-004-06-11 (4)
A resistor is marked with the colors red, violet and yellow. This resistor has a value of:

  • 274
  • 72 k
  • 27 M
  • 270 k
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