# RIC-8 — Advanced Qualification Question Bank for Amateur Radio Operator Certificate

A-003-01-01 (1)
What is the easiest amplitude dimension to measure by viewing a pure sine wave on an oscilloscope?

• Peak-to-peak voltage
• Peak voltage
• RMS voltage
• Average voltage

A-003-01-02 (4)
What is the RMS value of a 340 volt peak-to-peak pure sine wave?

• 170 volts
• 240 volts
• 300 volts
• 120 volts

A-003-01-03 (2)
What is the equivalent to the RMS value of an AC voltage?

• The AC voltage found by taking the square of the average value of the peak AC voltage
• The AC voltage causing the same heating of a given resistor as a DC voltage of the same value
• The DC voltage causing the same heating of a given resistor as the peak AC voltage
• The AC voltage found by taking the square root of the average AC value

A-003-01-04 (4)
If the peak value of a 100 Hz sinusoidal waveform is 20 volts, the RMS value is:

• 28.28 volts
• 7.07 volts
• 16.38 volts
• 14.14 volts

A-003-01-05 (4)
In applying Ohm's law to AC circuits, current and voltage values are:

• average values
• average values times 1.414
• none of the proposed answers
• peak values times 0.707

A-003-01-06 (2)
The effective value of a sine wave of voltage or current is:

• 50% of the maximum value
• 70.7% of the maximum value
• 100% of the maximum value
• 63.6% of the maximum value

A-003-01-07 (3)
AC voltmeter scales are usually calibrated to read:

• peak voltage
• instantaneous voltage
• RMS voltage
• average voltage

A-003-01-08 (3)
An AC voltmeter is calibrated to read the:

• peak-to-peak value
• average value
• effective value
• peak value

A-003-01-09 (2)
Which AC voltage value will produce the same amount of heat as a DC voltage, when applied to the same resistance?

• The average value
• The RMS value
• The peak value
• The peak-to-peak value

A-003-01-10 (4)
What is the peak-to-peak voltage of a sine wave that has an RMS voltage of 120 volts?

• 84.8 volts
• 169.7 volts
• 204.8 volts
• 339.5 volts
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A-003-01-11 (2)
A sine wave of 17 volts peak is equivalent to how many volts RMS?

• 24 volts
• 12 volts
• 34 volts
• 8.5 volts

A-003-02-01 (1)
The power supplied to the antenna transmission line by a transmitter during an RF cycle at the highest crest of the modulation envelope is known as:

• peak-envelope power
• mean power
• carrier power
• full power

A-003-02-02 (3)
To compute one of the following, multiply the peak-envelope voltage by 0.707 to obtain the RMS value, square the result and divide by the load resistance. Which is the correct answer?

• PIV
• ERP
• PEP
• power factor

A-003-02-03 (1)
Peak-Envelope Power (PEP) for SSB transmission is:

• Peak-Envelope Voltage (PEV) multiplied by 0.707, squared and divided by the load resistance
• peak-voltage multiplied by peak current
• equal to the rms power
• a hypothetical measurement

A-003-02-04 (2)
The formula to be used to calculate the power output of a transmitter into a resistor load using a voltmeter is:

• P = EI/R
• P = E^2/R
• P = EI cos 0
• P = IR

A-003-02-05 (1)
How is the output Peak-Envelope Power of a transmitter calculated, if an oscilloscope is used to measure the Peak-Envelope Voltage across a dummy resistive load? PEP = Peak-EnvelopePower PEV = Peak-Envelope VoltageVp = peak-voltageRL = load resistance

• PEP = [(0.707 PEV)(0.707 PEV)] / RL
• PEP = [(Vp)(Vp)] / (RL)
• PEP = (Vp)(Vp)(RL)
• PEP = [(1.414 PEV)(1.414 PEV)] / RL

A-003-02-06 (2)
What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50-ohm dummy load connected to the transmitter output?

• 400 watts
• 100 watts
• 1000 watts
• 200 watts

A-003-02-07 (2)
What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50-ohm dummy load connected to the transmitter output?

• 1250 watts
• 625 watts
• 2500 watts
• 500 watts

A-003-02-08 (3)
What is the output PEP of an unmodulated carrier transmitter if a wattmeter connected to the transmitter output indicates an average reading of 1060 watts?

• 2120 watts
• 1500 watts
• 1060 watts
• 530 watts

A-003-02-09 (1)
What is the output PEP from a transmitter, if an oscilloscope measures 400 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

• 400 watts
• 200 watts
• 600 watts
• 1000 watts
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A-003-02-10 (2)
What is the output PEP from a transmitter, if an oscilloscope measures 800 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

• 800 watts
• 1600 watts
• 6400 watts
• 3200 watts

A-003-02-11 (4)
An oscilloscope measures 500 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output during unmodulated carrier conditions. What would an average-reading power meter indicate under the same transmitter conditions?

• 427.5 watts
• 884 watts
• 442 watts
• 625 watts

A-003-03-01 (3)
What is a dip meter?

• An SWR meter
• A marker generator
• A variable frequency oscillator with metered feedback current
• A field-strength meter

A-003-03-02 (4)
What does a dip meter do?

• It measures transmitter output power accurately
• It measures field strength accurately
• It measures frequency accurately
• It gives an indication of the resonant frequency of a circuit

A-003-03-03 (1)
What two ways could a dip meter be used in an amateur station?

• To measure resonant frequencies of antenna traps and to measure a tuned circuit resonant frequency
• To measure antenna resonance and impedance
• To measure antenna resonance and percentage modulation
• To measure resonant frequency of antenna traps and percentage modulation

A-003-03-04 (1)
A dip meter supplies the radio frequency energy which enables you to check:

• the resonant frequency of a circuit
• the calibration of an absorption-type wavemeter
• the impedance mismatch in a circuit
• the adjustment of an inductor

A-003-03-05 (1)
A dip meter may not be used to:

• measure the value of capacitance or inductance
• align transmitter-tuned circuits
• determine the frequency of oscillations

A-003-03-06 (4)
The dial calibration on the output attenuator of a signal generator:

• always reads the true output of the signal generator
• reads twice the true output when the attenuator is properly terminated
• reads half the true output when the attenuator is properly terminated
• reads accurately only when the attenuator is properly terminated

A-003-03-07 (2)
What is a signal generator?

• A low-stability oscillator which sweeps through a range of frequencies
• A high-stability oscillator which can produce a wide range of frequencies and amplitudes
• A low-stabilty oscillator used to inject a signal into a circuit under test
• A high-stability oscillator which generates reference signals at exact frequency intervals

A-003-03-08 (4)
A dip meter:

• should be tightly coupled to the circuit under test
• may be used only with series tuned circuits
• accurately measures frequencies
• should be loosely coupled to the circuit under test
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A-003-03-09 (4)
A dip meter is:

• an SWR meter
• an RF amplifier tuning meter
• a battery electrolyte level gauge
• a variable frequency oscillator with metered feedback current

A-003-03-10 (3)
The dip meter is most directly applicable to:

• operational amplifier circuits
• digital logic circuits
• parallel tuned circuits
• series tuned circuits

A-003-03-11 (4)
Which of the following is not a factor affecting the frequency accuracy of a dip meter?

• hand capacity
• stray capacity
• over coupling
• transmitter power output

A-003-04-01 (2)
What does a frequency counter do?

• It measures frequency deviation
• It makes frequency measurements
• It generates broad-band white noise for calibration
• It produces a reference frequency

A-003-04-02 (4)
What factors limit the accuracy, frequency response and stability of a frequency counter?

• Time base accuracy, temperature coefficient of the logic and time base stability
• Number of digits in the readout, speed of the logic, and time base stability
• Number of digits in the readout, external frequency reference and temperature coefficient of the logic
• Time base accuracy, speed of the logic, and time base stability

A-003-04-03 (4)
How can the accuracy of a frequency counter be improved?

• By using slower digital logic
• By using faster digital logic
• By improving the accuracy of the frequency response
• By increasing the accuracy of the time base

A-003-04-04 (4)
If a frequency counter with a time base accuracy of +/- 0.1 PPM reads 146 520 000 Hz, what is the most that the actual frequency being measured could differ from that reading? "PPM = parts per million"

• 0.1 MHz
• 1.4652 Hz
• 1.4652 kHz
• 14.652 Hz

A-003-04-05 (1)
If a frequency counter, with a time base accuracy of 10 PPM reads 146 520 000 Hz, what is the most the actual frequency being measured could differ from that reading? "PPM = parts per million"

• 1465.2 Hz
• 146.52 Hz
• 146.52 kHz
• 1465.2 kHz

A-003-04-06 (1)
The clock in a frequency counter normally uses a:

• crystal oscillator
• self-oscillating Hartley oscillator
• mechanical tuning fork
• free-running multivibrator

A-003-04-07 (3)
The frequency accuracy of a frequency counter is determined by:

• the size of the frequency counter
• type of display used in the counter
• the characteristics of the internal timebase generator
• the number of digits displayed
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A-003-05-01 (2)
If a 100 Hz signal is fed to the horizontal input of an oscilloscope and a 150 Hz signal is fed to the vertical input, what type of pattern should be displayed on the screen?

• A rectangular pattern 100 mm wide and 150 mm high
• A looping pattern with 3 horizontal loops, and 2 vertical loops
• An oval pattern 100 mm wide and 150 mm high
• A looping pattern with 100 horizontal loops and 150 vertical loops

A-003-05-02 (2)
What factors limit the accuracy, frequency response and stability of an oscilloscope?

• Deflection amplifier output impedance and tube face frequency increments
• Accuracy of the time base and the linearity and bandwidth of the deflection amplifiers
• Accuracy and linearity of the time base and tube face voltage increments
• Tube face voltage increments and deflection amplifier voltages

A-003-05-03 (2)
How can the frequency response of an oscilloscope be improved?

• By using a crystal oscillator as the time base and increasing the vertical sweep rate
• By increasing the horizontal sweep rate and the vertical amplifier frequency response
• By increasing the vertical sweep rate and the horizontal amplifier frequency response
• By using triggered sweep and a crystal oscillator for the timebase

A-003-05-04 (3)
You can use an oscilloscope to display the input and output of a circuit at the same time by:

• measuring the input on the X axis and the output on the Y axis
• measuring the input on the X axis and the output on the Z axis
• utilizing a dual trace oscilloscope
• measuring the input on the Y axis and the output on the X axis

A-003-05-05 (3)
An oscilloscope cannot be used to:

• measure frequency
• measure DC voltage
• determine FM carrier deviation
• determine the amplitude of complex voltage wave forms

A-003-05-06 (3)
The bandwidth of an oscilloscope is:

• directly related to gain compression
• indirectly related to screen persistence
• the highest frequency signal the scope can display
• a function of the time-base accuracy

A-003-05-07 (3)
When using Lissajous figures to determine phase differences, an indication of zero or 180 degrees is represented on the screen of an oscilloscope by:

• a horizontal straight line
• an ellipse
• a diagonal straight line
• a circle

A-003-05-08 (3)
A 100-kHz signal is applied to the horizontal channel of an oscilloscope. A signal of unknown frequency is applied to the vertical channel. The resultant wave form has 5 loops displayed vertically and 2 loops horizontally. The unknown frequency is:

• 20 kHz
• 50 kHz
• 40 kHz
• 30 kHz

A-003-05-09 (2)
What item of test equipment contains horizontal and vertical channel amplifiers?

• A signal generator
• An oscilloscope
• An ammeter
• An ohmmeter

A-003-05-10 (2)
What is the best instrument to use to check the signal quality of a CW or single-sideband phone transmitter?

• A sidetone monitor
• An oscilloscope
• A signal tracer and an audio amplifier
• A field-strength meter
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A-003-05-11 (1)
What signal source is connected to the vertical input of an oscilloscope when checking the quality of a transmitted signal?

• the RF signals of a nearby receiving antenna
• the IF output of a monitoring receiver
• the audio input of the transmitter
• the RF output of the transmitter

A-003-06-01 (3)
A meter has a full-scale deflection of 40 microamps and an internal resistance of 96 ohms. You want it to read 0 to 1 mA. The value of the shunt to be used is:

• 24 ohms
• 16 ohms
• 4 ohms
• 40 ohms

A-003-06-02 (2)
A moving-coil milliammeter having a full-scale deflection of 1 mA and an internal resistance of 0.5 ohms is to be converted to a voltmeter of 20 volts fullscale deflection. It would be necessary to insert a:

• series resistance of 1 999.5 ohms
• series resistance of 19 999.5 ohms
• shunt resistance of 19 999.5 ohms
• shunt resistance of 19.5 ohms

A-003-06-03 (4)
A voltmeter having a range of 150 volts and an internal resistance of 150 000 ohms is to be extended to read 750 volts. The required multiplier resistor would have a value of:

• 1 500 ohms
• 750 000 ohms
• 1 200 000 ohms
• 600 000 ohms

A-003-06-04 (1)
The sensitivity of an ammeter is an expression of:

• the amount of current causing full-scale deflection
• the resistance of the meter
• the value of the shunt resistor

A-003-06-05 (1)
Voltmeter sensitivity is usually expressed in ohms per volt. This means that a voltmeter with a sensitivity of 20 kilohms per volt would be a:

• 50 microampere meter
• 1 milliampere meter
• 50 milliampere meter
• 100 milliampere meter

A-003-06-06 (2)
The sensitivity of a voltmeter, whose resistance is 150 000 ohms on the 150-volt range, is:

• 100 000 ohms per volt
• 1000 ohms per volt
• 10 000 ohms per volt
• 150 ohms per volt

A-003-06-07 (3)
The range of a DC ammeter can easily be extended by:

• connecting an external resistance in series with the internal resistance
• changing the internal inductance of the meter
• connecting an external resistance in parallel with the internal resistance
• changing the internal capacitance of the meter to resonance

A-003-06-08 (2)
What happens inside a multimeter when you switch it from a lower to a higher voltage range?

• Resistance is reduced in series with the meter
• Resistance is added in series with the meter
• Resistance is reduced in parallel with the meter
• Resistance is added in parallel with the meter

A-003-06-09 (1)
How can the range of an ammeter be increased?

• By adding resistance in parallel with the meter
• By adding resistance in series with the circuit under test
• By adding resistance in parallel with the circuit under test
• By adding resistance in series with the meter
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A-003-06-10 (2)
Where should an RF wattmeter be connected for the most accurate readings of transmitter output power?

• One-half wavelength from the transmitter output
• At the transmitter output connector
• One-half wavelength from the antenna feed point
• At the antenna feed point

A-003-06-11 (4)
At what line impedance do most RF wattmeters usually operate?

• 25 ohms
• 100 ohms
• 300 ohms
• 50 ohms