Ham Extra License Practice Quiz


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E0A08: What does SAR measure?

Synthetic Aperture Ratio of the human body
Signal Amplification Rating
The rate at which RF energy is absorbed by the body
The rate of RF energy reflected from stationary terrain

E1A04: With your transceiver displaying the carrier frequency of phone signals, you hear a DX station calling CQ on 3.601 MHz LSB. Is it legal to return the call using lower sideband on the same frequency?

Yes, because the DX station initiated the contact
Yes, because the displayed frequency is within the 75 meter phone band segment
No, my sidebands will extend beyond the edge of the phone band segment
No, USA stations are not permitted to use phone emissions below 3.610 MHz

E1B06: Which of the following additional rules apply if you are installing an amateur station antenna at a site at or near a public use airport?

You may have to notify the Federal Aviation Administration and register it with the FCC as required by Part 17 of FCC rules
No special rules apply if your antenna structure will be less than 300 feet in height
You must file an Environmental Impact Statement with the EPA before construction begins
You must obtain a construction permit from the airport zoning authority

E1C08: What is the maximum permissible duration of a remotely controlled station's transmissions if its control link malfunctions?

30 seconds
3 minutes
5 minutes
10 minutes

E1D04: What is an Earth station in the amateur satellite service?

An amateur station within 50 km of the Earth's surface intended for communications with amateur stations by means of objects in space
An amateur station that is not able to communicate using amateur satellites
An amateur station that transmits telemetry consisting of measurement of upper atmosphere data from space
Any amateur station on the surface of the Earth

E1E09: What may be the penalty for a VE who fraudulently administers or certifies an examination?

Revocation of the VE's amateur station license grant and the suspension of the VE's amateur operator license grant
A fine of up to $1000 per occurrence
A sentence of up to one year in prison
All of these choices are correct

E1F05: Amateur stations may not transmit in which of the following frequency segments if they are located in the contiguous 48 states and north of Line A?

440 - 450 MHz
53 - 54 MHz
222 - 223 MHz
420 - 430 MHz

E2A04: What is meant by the term mode as applied to an amateur radio satellite?

The type of signals that can be relayed through the satellite
The satellite's uplink and downlink frequency bands
The satellite's orientation with respect to the Earth
Whether the satellite is in a polar or equatorial orbit

E2B11: What is the function of the Vertical Interval Signaling (VIS) code transmitted as part of an SSTV transmission?

To lock the color burst oscillator in color SSTV images
To identify the SSTV mode being used
To provide vertical synchronization
To identify the call sign of the station transmitting

E2C11: How should you generally identify your station when attempting to contact a DX station working a pileup or in a contest?

Send your full call sign once or twice
Send only the last two letters of your call sign until you make contact
Send your full call sign and grid square
Send the call sign of the DX station three times, the words this is, then your call sign three times

E2D01: Which of the following digital modes is especially designed for use for meteor scatter signals?

WSPR
FSK441
Hellschreiber
APRS

E2E12: Which type of digital communication does not support keyboard-to-keyboard operation?

Winlink
RTTY
PSK31
MFSK

E3A10: Which of the following is a good technique for making meteor-scatter contacts?

15 second timed transmission sequences with stations alternating based on location
Use of high speed CW or digital modes
Short transmission with rapidly repeated call signs and signal reports
All of these choices are correct

E3B07: Which of the following could account for hearing an echo on the received signal of a distant station?

High D layer absorption
Meteor scatter
Transmit frequency is higher than the MUF
Receipt of a signal by more than one path

E3C04: Which emission mode is best for Aurora propagation?

CW
SSB
FM
RTTY

E4A02: Which of the following parameters would a spectrum analyzer display on the horizontal axis?

SWR
Q
Time
Frequency

E4B08: Which of the following is a characteristic of a good DC voltmeter?

High reluctance input
Low reluctance input
High impedance input
Low impedance input

E4C08: How might lowering the noise figure affect receiver performance?

It would reduce the signal to noise ratio
It would improve weak signal sensitivity
It would reduce bandwidth
It would increase bandwidth

E4D07: Which of the following describes the most significant effect of an off-frequency signal when it is causing cross-modulation interference to a desired signal?

A large increase in background noise
A reduction in apparent signal strength
The desired signal can no longer be heard
The off-frequency unwanted signal is heard in addition to the desired signal

E4E11: Which of the following is the most likely cause if you are hearing combinations of local AM broadcast signals within one or more of the MF or HF ham bands?

The broadcast station is transmitting an over-modulated signal
Nearby corroded metal joints are mixing and re-radiating the broadcast signals
You are receiving sky wave signals from a distant station
Your station receiver IF amplifier stage is defective

E5A01: What can cause the voltage across reactances in series to be larger than the voltage applied to them?

Resonance
Capacitance
Conductance
Resistance

E5B01: What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the applied voltage?

An exponential rate of one
One time constant
One exponential period
A time factor of one

E5C09: When using rectangular coordinates to graph the impedance of a circuit, what does the horizontal axis represent?

Resistive component
Reactive component
The sum of the reactive and resistive components
The difference between the resistive and reactive components

E5D18: How many watts are consumed in a circuit having a power factor of 0.71 if the apparent power is 500 VA?

704 W
355 W
252 W
1.42 mW

E6A03: What are the majority charge carriers in P-type semiconductor material?

Free neutrons
Free protons
Holes
Free electrons

E6B02: What is an important characteristic of a Schottky diode as compared to an ordinary silicon diode when used as a power supply rectifier?

Much higher reverse voltage breakdown
Controlled reverse avalanche voltage
Enhanced carrier retention time
Less forward voltage drop

E6C11: In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)?

2
4
5
6

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

E6E02: Which of the following factors has the greatest effect in helping determine the bandwidth and response shape of a crystal ladder filter?

The relative frequencies of the individual crystals
The DC voltage applied to the quartz crystal
The gain of the RF stage preceding the filter
The amplitude of the signals passing through the filter

E6F02: What happens to the conductivity of a photoconductive material when light shines on it?

It increases
It decreases
It stays the same
It becomes unstable

E7A12: What is the name for logic which represents a logic "0" as a high voltage?

Reverse Logic
Assertive Logic
Negative logic
Positive Logic

E7B18: Which of the following is a characteristic of a grounded-grid amplifier?

High power gain
High filament voltage
Low input impedance
Low bandwidth

E7C06: What are the distinguishing features of an elliptical filter?

Gradual passband rolloff with minimal stop band ripple
Extremely flat response over its pass band with gradually rounded stop band corners
Extremely sharp cutoff with one or more notches in the stop band
Gradual passband rolloff with extreme stop band ripple

E7D04: Which of the following types of linear voltage regulator usually make the most efficient use of the primary power source?

A series current source
A series regulator
A shunt regulator
A shunt current source

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

E7F09: What is the purpose of a frequency counter?

To provide a digital representation of the frequency of a signal
To generate a series of reference signals at known frequency intervals
To display all frequency components of a transmitted signal
To provide a signal source at a very accurate frequency

E7G13: What is meant by the term op-amp input-offset voltage?

The output voltage of the op-amp minus its input voltage
The differential input voltage needed to bring the open-loop output voltage to zero
The input voltage needed to bring the open-loop output voltage to zero
The potential between the amplifier input terminals of the op-amp in an open-loop condition

E7H17: Why is a phase-locked loop often used as part of a variable frequency synthesizer for receivers and transmitters?

It generates FM sidebands
It eliminates the need for a voltage controlled oscillator
It makes it possible for a VFO to have the same degree of frequency stability as a crystal oscillator
It can be used to generate or demodulate SSB signals by quadrature phase synchronization

E8A01: What type of wave is made up of a sine wave plus all of its odd harmonics?

A square wave
A sine wave
A cosine wave
A tangent wave

E8B05: What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus-or-minus 5 kHz when the maximum modulation frequency is 3 kHz?

60
0.167
0.6
1.67

E8C11: What spread-spectrum communications technique uses a high speed binary bit stream to shift the phase of an RF carrier?

Frequency hopping
Direct sequence
Binary phase-shift keying
Phase compandored spread-spectrum

E8D01: Which of the following is the easiest voltage amplitude parameter to measure when viewing a pure sine wave signal on an analog oscilloscope?

Peak-to-peak voltage
RMS voltage
Average voltage
DC voltage

E9A04: Why would one need to know the feed point impedance of an antenna?

To match impedances in order to minimize standing wave ratio on the transmission line
To measure the near-field radiation density from a transmitting antenna
To calculate the front-to-side ratio of the antenna
To calculate the front-to-back ratio of the antenna

E9B10: What is the principle of a Method of Moments analysis?

A wire is modeled as a series of segments, each having a uniform value of current
A wire is modeled as a single sine-wave current generator
A wire is modeled as a series of points, each having a distinct location in space
A wire is modeled as a series of segments, each having a distinct value of voltage across it

E9C10: How many elevation lobes appear in the forward direction of the antenna radiation pattern shown in Figure E9-2?

4
3
1
7

E9D08: What happens to the bandwidth of an antenna as it is shortened through the use of loading coils?

It is increased
It is decreased
No change occurs
It becomes flat

E9E12: What is the primary purpose of a phasing line when used with an antenna having multiple driven elements?

It ensures that each driven element operates in concert with the others to create the desired antenna pattern
It prevents reflected power from traveling back down the feed line and causing harmonic radiation from the transmitter
It allows single-band antennas to operate on other bands
It makes sure the antenna has a low-angle radiation pattern

E9F03: Why is the physical length of a coaxial cable transmission line shorter than its electrical length?

Skin effect is less pronounced in the coaxial cable
The characteristic impedance is higher in a parallel feed line
The surge impedance is higher in a parallel feed line
Electrical signals move more slowly in a coaxial cable than in air

E9G01: Which of the following can be calculated using a Smith chart?

Impedance along transmission lines
Radiation resistance
Antenna radiation pattern
Radio propagation

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