Online courses for the ham radio license exams.

NEW General Class Exam Question Pool

effective 7/01/2015 thru 6/30/2019

    Unseen questions
    Weak questions
    Review questions
    Learned questions
    Incorrect answer choices  

2015-G8A: Carriers and modulation: AM; FM; single sideband; modulation envelope; digital modulation; overmodulation

2015-G8A01: How is an FSK signal generated?

By changing an oscillator’s frequency directly with a digital control signal

By keying an FM transmitter with a sub-audible tone

By using a transceiver’s computer data interface protocol to change frequencies

By reconfiguring the CW keying input to act as a tone generator

2015-G8A02: What is the name of the process that changes the phase angle of an RF wave to convey information?

Phase modulation

Phase convolution

Angle convolution

Radian inversion

2015-G8A03: What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Frequency modulation

Frequency convolution

Frequency transformation

Frequency conversion

2015-G8A04: What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Phase modulation

Multiplex modulation

Amplitude modulation

Pulse modulation

2015-G8A05: What type of modulation varies the instantaneous power level of the RF signal?

Amplitude modulation

Frequency shift keying

Phase modulation

Frequency modulation

2015-G8A06: What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Available transmitter power can be used more effectively

Audio fidelity is improved

Greater modulation percentage is obtainable with lower distortion

Simpler receiving equipment can be used

2015-G8A07: Which of the following phone emissions uses the narrowest bandwidth?

Single sideband

Double sideband

Phase modulation

Frequency modulation

2015-G8A08: Which of the following is an effect of overmodulation?

Excessive bandwidth

Insufficient audio

Insufficient bandwidth

Frequency drift

2015-G8A09: What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Transmit audio or microphone gain

The RF clipping level

Antenna inductance or capacitance

Attenuator level

2015-G8A10: What is meant by the term flat-topping when referring to a single sideband phone transmission?

Signal distortion caused by excessive drive

Signal distortion caused by insufficient collector current

The transmitter's automatic level control (ALC) is properly adjusted

The transmitter's carrier is properly suppressed

2015-G8A11: What is the modulation envelope of an AM signal?

The waveform created by connecting the peak values of the modulated signal

The carrier frequency that contains the signal

Spurious signals that envelop nearby frequencies

The bandwidth of the modulated signal

Color key:
● = Unseen
● = Weak
● = Review
● = Learned
● = Incorrect answer
Previous group:
2015-G7C: Receivers and transmitters; filters, oscillators
Back to index:
NEW General Class Exam Question Pool
Next group:
2015-G8B: Frequency mixing; multiplication; bandwidths of various modes; deviation; duty cycle
Home     What is ham radio?     Which exam to take?     Study tips     Where to take the exam?     Frequency Asked Questions (FAQ)     How to     How much math?     Trouble with practice exams     Feedback     Prices     Ham It Forward     Free Extra course for active volunteer examiners     Refund policy     Privacy policy    Terms and conditions     Bumper sticker     Advertise with us     The Ham band     Rate us     Question pools     Course structure     Survivalists     Documents     facebook     Google+     Contact us     Christina's story     TestOnline     Links

The best study method, customer support, and guarantee in the industry!

A TestOnline website.  Copyright © 1998-2016, HamTestOnline™.  All rights reserved.