Ham Extra License Practice Quiz

• Percentage: 0%; Correct: 0; Total: 0 of 50
E0A06: Why are there separate electric (E) and magnetic (H) field MPE limits?

The body reacts to electromagnetic radiation from both the E and H fields
Ground reflections and scattering make the field impedance vary with location
E field and H field radiation intensity peaks can occur at different locations
All of these choices are correct
E1A07: What is the only amateur band where transmission on specific channels rather than a range of frequencies is permitted?

12 meter band
17 meter band
30 meter band
60 meter band
E1B05: What is the maximum bandwidth for a data emission on 60 meters?

60 Hz
170 Hz
1.5 kHz
2.8 kHz
E1C10: What types of amateur stations may automatically retransmit the radio signals of other amateur stations?

Only beacon, repeater or space stations
Only auxiliary, repeater or space stations
Only earth stations, repeater stations or model craft
Only auxiliary, beacon or space stations
E1D11: Which amateur stations are eligible to operate as Earth stations?

Any amateur station whose licensee has filed a pre-space notification with the FCC's International Bureau
Only those of General, Advanced or Amateur Extra Class operators
Only those of Amateur Extra Class operators
Any amateur station, subject to the privileges of the class of operator license held by the control operator
E1E11: What must the VE team do if an examinee scores a passing grade on all examination elements needed for an upgrade or new license?

Photocopy all examination documents and forward them to the FCC for processing
Three VEs must certify that the examinee is qualified for the license grant and that they have complied with the administering VE requirements
Issue the examinee the new or upgrade license
All these choices are correct
E1F01: On what frequencies are spread spectrum transmissions permitted?

Only on amateur frequencies above 50 MHz
Only on amateur frequencies above 222 MHz
Only on amateur frequencies above 420 MHz
Only on amateur frequencies above 144 MHz
E2A13: What type of satellite appears to stay in one position in the sky?

HEO
Geostationary
Geomagnetic
LEO
E2B07: What is the name of the signal component that carries color information in NTSC video?

Luminance
Chroma
Hue
Spectral Intensity
E2C06: During a VHF/UHF contest, in which band segment would you expect to find the highest level of activity?

At the top of each band, usually in a segment reserved for contests
In the middle of each band, usually on the national calling frequency
In the weak signal segment of the band, with most of the activity near the calling frequency
In the middle of the band, usually 25 kHz above the national calling frequency
E2D07: Which of the following digital protocols is used by APRS?

PACTOR
802.11
AX.25
AMTOR
E2E11: What is the difference between direct FSK and audio FSK?

Direct FSK applies the data signal to the transmitter VFO
Audio FSK has a superior frequency response
Direct FSK uses a DC-coupled data connection
Audio FSK can be performed anywhere in the transmit chain
E3A08: When a meteor strikes the Earth's atmosphere, a cylindrical region of free electrons is formed at what layer of the ionosphere?

The E layer
The F1 layer
The F2 layer
The D layer
E3B06: Which of the following amateur bands most frequently provides long-path propagation?

80 meters
20 meters
10 meters
6 meters
E3C11: From the contiguous 48 states, in which approximate direction should an antenna be pointed to take maximum advantage of aurora propagation?

South
North
East
West
E4A11: Which of these instruments could be used for detailed analysis of digital signals?

Dip meter
Oscilloscope
Ohmmeter
Q meter
E4B11: How should a portable antenna analyzer be connected when measuring antenna resonance and feed point impedance?

Loosely couple the analyzer near the antenna base
Connect the analyzer via a high-impedance transformer to the antenna
Connect the antenna and a dummy load to the analyzer
Connect the antenna feed line directly to the analyzer's connector
E4C13: How does a narrow-band roofing filter affect receiver performance?

It improves sensitivity by reducing front end noise
It improves intelligibility by using low Q circuitry to reduce ringing
It improves dynamic range by attenuating strong signals near the receive frequency
All of these choices are correct
E4D01: What is meant by the blocking dynamic range of a receiver?

The difference in dB between the noise floor and thelevel of an incoming signal which will cause 1 dB of gain compression
The minimum difference in dB between the levels of two FM signals which will cause one signal to block the other
The difference in dB between the noise floor and the third order intercept point
The minimum difference in dB between two signals which produce third order intermodulation products greater than the noise floor
E4E04: How can conducted and radiated noise caused by an automobile alternator be suppressed?

By installing filter capacitors in series with the DC power lead and by installing a blocking capacitor in the field lead
By installing a noise suppression resistor and a blocking capacitor in both leads
By installing a high-pass filter in series with the radio's power lead and a low-pass filter in parallel with the field lead
By connecting the radio's power leads directly to the battery and by installing coaxial capacitors in line with the alternator leads
E5A10: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 1.8 MHz and a Q of 95?

18.9 kHz
1.89 kHz
94.5 kHz
9.45 kHz
E5B07: What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250 ohms?

68.2 degrees with the voltage leading the current
14.0 degrees with the voltage leading the current
14.0 degrees with the voltage lagging the current
68.2 degrees with the voltage lagging the current
E5C15: In polar coordinates, what is the impedance of a circuit of 100 -j100 ohms impedance?

141 ohms at an angle of -45 degrees
100 ohms at an angle of 45 degrees
100 ohms at an angle of -45 degrees
141 ohms at an angle of 45 degrees
E5D12: How many watts are consumed in a circuit having a power factor of 0.2 if the input is 100-V AC at 4 amperes?

400 watts
80 watts
2000 watts
50 watts
E6A01: In what application is gallium arsenide used as a semiconductor material in preference to germanium or silicon?

In high-current rectifier circuits
In high-power audio circuits
At microwave frequencies
At very low frequency RF circuits
E6B13: What type of bias is required for an LED to emit light?

Reverse bias
Forward bias
Zero bias
Inductive bias
E6C07: In Figure E6-5, what is the schematic symbol for an AND gate?

1
2
3
4
E6D12: How many turns will be required to produce a 5-microhenry inductor using a powdered-iron toroidal core that has an inductance index (A L) value of 40 microhenrys/100 turns?

35 turns
13 turns
79 turns
141 turns
E6E10: What is the equivalent circuit of a quartz crystal?

Motional capacitance, motional inductance and loss resistance in series, with a shunt capacitance representing electrode and stray capacitance
Motional capacitance, motional inductance, loss resistance, and a capacitor representing electrode and stray capacitance all in parallel
Motional capacitance, motional inductance, loss resistance, and a capacitor represent electrode and stray capacitance all in series
Motional inductance and loss resistance in series, paralleled with motional capacitance and a capacitor representing electrode and stray capacitance
E6F05: Which of the following describes an optical shaft encoder?

A device which detects rotation of a control by interrupting a light source with a patterned wheel
A device which measures the strength a beam of light using analog to digital conversion
A digital encryption device often used to encrypt spacecraft control signals
A device for generating RTTY signals by means of a rotating light source.
E7A12: What is the name for logic which represents a logic "0" as a high voltage?

Reverse Logic
Assertive Logic
Negative logic
Positive Logic
E7B06: Which of the following amplifier types reduces or eliminates even-order harmonics?

Push-push
Push-pull
Class C
Class AB
E7C02: A T-network with series capacitors and a parallel shunt inductor has which of the following properties?

It is a low-pass filter
It is a band-pass filter
It is a high-pass filter
It is a notch filter
E7D11: What is the purpose of R1 in the circuit shown in Figure E7-3?

It provides a constant load to the voltage source
It couples hum to D1
It supplies current to D1
It bypasses hum around D1
E7E08: What are the principal frequencies that appear at the output of a mixer circuit?

Two and four times the original frequency
The sum, difference and square root of the input frequencies
The two input frequencies along with their sum and difference frequencies
1.414 and 0.707 times the input frequency
E7F11: What is an advantage of a period-measuring frequency counter over a direct-count type?

It can run on battery power for remote measurements
It does not require an expensive high-precision time base
It provides improved resolution of low-frequency signals within a comparable time period
It can directly measure the modulation index of an FM transmitter
E7G01: What primarily determines the gain and frequency characteristics of an op-amp RC active filter?

The values of capacitors and resistors built into the op-amp
The values of capacitors and resistors external to the op-amp
The input voltage and frequency of the op-amp's DC power supply
The output voltage and smoothness of the op-amp's DC power supply
E7H18: What are the major spectral impurity components of phase-locked loop synthesizers?

Phase noise
Digital conversion noise
Spurious signals at discrete frequencies
Nyquist limit noise
E8A02: What type of wave has a rise time significantly faster than its fall time (or vice versa)?

A cosine wave
A square wave
A sawtooth wave
A sine wave
E8B06: What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 7.5 kHz when the maximum modulation frequency is 3.5 kHz?

2.14
0.214
0.47
47
E8C10: What spread-spectrum communications technique alters the center frequency of a conventional carrier many times per second in accordance with a pseudo-random list of channels?

Frequency hopping
Direct sequence
Time-domain frequency modulation
Frequency compandored spread-spectrum
E8D09: What is meant by circularly polarized electromagnetic waves?

Waves with an electric field bent into a circular shape
Waves with a rotating electric field
Waves that circle the Earth
Waves produced by a loop antenna
E9A13: How much gain does an antenna have compared to a 1/2-wavelength dipole when it has 6 dB gain over an isotropic antenna?

3.85 dB
6.0 dB
8.15 dB
2.79 dB
E9B08: How can the approximate beamwidth in a given plane of a directional antenna be determined?

Note the two points where the signal strength of the antenna is 3 dB less than maximum and compute the angular difference
Measure the ratio of the signal strengths of the radiated power lobes from the front and rear of the antenna
Draw two imaginary lines through the ends of the elements and measure the angle between the lines
Measure the ratio of the signal strengths of the radiated power lobes from the front and side of the antenna
E9C06: What is the effect of a terminating resistor on a rhombic antenna?

It reflects the standing waves on the antenna elements back to the transmitter
It changes the radiation pattern from bidirectional to unidirectional
It changes the radiation pattern from horizontal to vertical polarization
It decreases the ground loss
E9D09: What is an advantage of using top loading in a shortened HF vertical antenna?

Lower Q
Greater structural strength
Higher losses
Improved radiation efficiency
E9E05: How must the driven element in a 3-element Yagi be tuned to use a hairpin matching system?

The driven element reactance must be capacitive
The driven element reactance must be inductive
The driven element resonance must be lower than the operating frequency
The driven element radiation resistance must be higher than the characteristic impedance of the transmission line
E9F13: What impedance does a 1/4-wavelength transmission line present to a generator when the line is shorted at the far end?

Very high impedance
Very low impedance
The same as the characteristic impedance of the transmission line
The same as the generator output impedance
E9G04: What are the two families of circles and arcs that make up a Smith chart?

Resistance and voltage
Reactance and voltage
Resistance and reactance
Voltage and impedance
E9H05: What is the main drawback of a wire-loop antenna for direction finding?

It has a bidirectional pattern
It is non-rotatable
It receives equally well in all directions
It is practical for use only on VHF bands