WorksheetsHam Radio General Questions Till 2019 Set G7C
Total questions: 11
Worksheet time: 11mins
Name
Class
Date
1.
G7C01 Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?
a)
A. Carrier oscillator
b)
B. Filter
c)
C. IF amplifier
d)
D. RF amplifier
2.
G7C02 Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?
a)
A. Discriminator
b)
B. Detector
c)
C. IF amplifier
d)
D. Balanced modulator
3.
G7C03 What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?
a)
A. Balanced modulator
b)
B. IF amplifier
c)
C. Mixer
d)
D. Detector
4.
G7C04 What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?
a)
A. RF oscillator
b)
B. IF filter
c)
C. Balanced modulator
d)
D. Product detector
5.
G7C05 Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?
a)
A. Wide tuning range and no need for band switching
b)
B. Relatively high power output
c)
C. Relatively low power consumption
d)
D. Variable frequency with the stability of a crystal oscillator
6.
G7C06 What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?
a)
A. Substantially higher
b)
B. About the same
c)
C. Substantially lower
d)
D. Twice the transmission line impedance
7.
G7C07 What is the simplest combination of stages that implement a superheterodyne receiver?
a)
A. RF amplifier, detector, audio amplifier
b)
B. RF amplifier, mixer, IF discriminator
c)
C. HF oscillator, mixer, detector
d)
D. HF oscillator, prescaler, audio amplifier
8.
G7C08 What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?
a)
A. Product detector
b)
B. Phase inverter
c)
C. Mixer
d)
D. Discriminator
9.
G7C09 Which of the following is needed for a Digital Signal Processor IF filter?
a)
A. An analog to digital converter
b)
B. A digital to analog converter
c)
C. A digital processor chip
d)
D. All of the these choices are correct
10.
G7C10 How is Digital Signal Processor filtering accomplished?
a)
A. By using direct signal phasing
b)
B. By converting the signal from analog to digital and using digital processing
c)
C. By differential spurious phasing
d)
D. By converting the signal from digital to analog and taking the difference of mixing products
11.
G7C11 What is meant by the term "software defined radio" (SDR)?
a)
A. A radio in which most major signal processing functions are performed by software
b)
B. A radio that provides computer interface for automatic logging of band and frequency
c)
C. A radio that uses crystal filters designed using software
d)
D. A computer model that can simulate performance of a radio to aid in the design process
100 %
