Site MapHelpFeedbackTrue or False
True or False
(See related pages)

1
A radio transmitter takes the information to be connected and converts it to an electronic signal compatible with the communication medium.
A)True
B)False
2
The simplest transmitter is a single-transistor oscillator that is switched off and on by a telegraph key to produce the dots and dashes of the Morse code.
A)True
B)False
3
The power input of a citizens band transmitter is approximately 5 W.
A)True
B)False
4
In FM transmitters operating in the microwave range, klystrons, magnetrons, and traveling-wave tubes are used to provide the final power amplification.
A)True
B)False
5
Single-sideband signals are typically generated at a high RF which makes the balanced modulator and filter circuits easier to design.
A)True
B)False
6
Most radio transmitters are licensed by the FCC either directly or indirectly to operate on predefined frequencies or channels.
A)True
B)False
7
The FCC requires that an LC oscillator be used in all transmitters.
A)True
B)False
8
The most common crystal oscillator is a Hartley type, in which the feedback is derived from a capacitive voltage divider.
A)True
B)False
9
Fine-tuning a crystal with the use of pulling capacitors is referred to as crystalling.
A)True
B)False
10
Overtones refer to multiples of a harmonic frequency.
A)True
B)False
11
A switching amplifier is a transistor that is used as a switch and is either conducting or nonconducting.
A)True
B)False
12
A class D amplifier uses a pair of transistors to produce a sine wave current in a tuned circuit.
A)True
B)False
13
Class S amplifiers, which use switching techniques but with a scheme of pulse-width modulation, are found primarily in audio applications.
A)True
B)False
14
The circuits used to connect one stage to another are known as impedance-matching networks.
A)True
B)False
15
Single-winding transformers called step-down transformers are used for impedance matching between RF stages.
A)True
B)False





To learn more about the book this website supports, please visit its Information Center.
(c)2008 Tata McGraw-Hill
Any use is subject to the Terms of Use and Privacy Policy.
Tata McGraw-Hill is one of the many fine businesses ofThe McGraw-Hill Companies.


Frenzel Louis E.Online Learning Center

Home > Chapter 8 > True or False