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ARSGDAT.3AD
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1992-10-04
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8KB
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345 lines
;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\:
; :
; AMATEUR RADIO STUDY GUIDE v1.00 :
; :
; Copyright (c) 1992 David Drzyzga - All Rights Reserved :
; :
; Based on a program coded in BASIC by Russ Revels :
; :
;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\:
;
; You can include comments an the file anywhere you want
; just like these comments. You cannot put a comment in
; the middle of a line though.
;
; When modifying this file, there are several things you
; must be aware of:
;
; -> Any line of text in this file cannot exceed 65 characters!
; this is the 65th character^
;
; No harm will be done, but nothing over 65 characters will
; be read by the program.
;
; -> Do not make questions more than 20 lines long, or you
; will receive an 'out of memory' error when you execute
; the program.
;
; -> You can add or delete questions as you please, just be
; sure to follow the format of the existing questions.
;
;
;
(3AD-1-1.1)
Where should the green wire in an AC line cord be attached in a
power supply?
C. To the chassis
*
(3AD-1-1.2)
Where should the black (or red) wire in a three-wire line cord
be attached in a power supply?
D. To the fuse
*
(3AD-1-1.3)
Where should the white wire in a three-wire line cord be
attached in a power supply?
B. To the side of the transformer's primary winding without a
fuse
*
(3AD-1-1.4)
Why is the retaining screw in one terminal of a light socket
made of brass while the other one is silver colored?
B. To indicate correct wiring polarity
*
(3AD-1-2.1)
How much electrical current flowing through the human body is
usually fatal?
A. As little as 100 milliamperes may be fatal
*
(3AD-1-2.2)
What is the minimum voltage considered to be dangerous to
humans?
A. 30 volts
*
(3AD-1-2.3)
How much electrical current flowing through the human body is
usually painful?
A. As little as 50 milliamperes may be painful
*
(3AD-1-3.1)
Where should the main power-line switch for a high voltage power
supply be situated?
C. Where it can be seen and reached easily
*
(3AD-2-1.1)
How is a voltmeter typically connected to a circuit under test?
B. In parallel with the circuit
*
(3AD-2-2.1)
How can the range of a voltmeter be extended?
C. By adding resistance in series with the meter
*
(3AD-3-1.1)
How is an ammeter typically connected to a circuit under test?
A. In series with the circuit
*
(3AD-3-2.1)
How can the range of an ammeter be extended?
D. By adding resistance in parallel with the meter
*
(3AD-4.1)
What is a multimeter?
D. An instrument capable of reading voltage, current and
resistance
*
(3AD-5-1.1)
Where in the antenna transmission line should a peak-reading
wattmeter be attached to determine the transmitter output power?
A. At the transmitter output
*
(3AD-5-1.2)
For the most accurate readings of transmitter output power,
where should the RF wattmeter be inserted?
C. The wattmeter should be inserted and the output power
measured at the transmitter antenna jack
*
(3AD-5-1.3)
At what line impedance are RF wattmeters usually designed to
operate?
B. 50 ohms
*
(3AD-5-1.4)
What is a directional wattmeter?
A. An instrument that measures forward or reflected power
*
(3AD-5-2.1)
If a directional RF wattmeter indicates 90 watts forward power
and 10 watts reflected power, what is the actual transmitter
output power?
B. 80 watts
*
(3AD-5-2.2)
If a directional RF wattmeter indicates 96 watts forward power
and 4 watts reflected power, what is the actual transmitter
output power?
C. 92 watts
*
(3AD-6.1)
What is a marker generator?
A. A high-stability oscillator that generates a series of
reference signals at known frequency intervals
*
(3AD-6.2)
What type of circuit is used to inject a frequency calibration
signal into a communications receiver?
D. A crystal calibrator
*
(3AD-6.3)
How is a marker generator used?
A. To calibrate the tuning dial on a receiver
*
(3AD-7.1)
What piece of test equipment produces a stable, low-level signal
that can be set to a specific frequency?
C. A signal generator
*
(3AD-7.2)
What is an RF signal generator commonly used for?
B. Aligning receiver tuned circuits
*
(3AD-8-1.1)
What is a reflectometer?
D. An instrument used to measure standing wave ratio
*
(3AD-8-1.2)
What is the device that can indicate an impedance mismatch in an
antenna system?
D. A reflectometer
*
(3AD-8-2.1)
For best accuracy when adjusting the impedance match between an
antenna and feed line, where should the match-indicating device
be inserted?
A. At the antenna feed point
*
(3AD-8-2.2)
Where should a reflectometer be inserted into a long antenna
transmission line in order to obtain the most valid standing
wave ratio indication?
C. At the antenna end
*
(3AD-9.1)
When adjusting a transmitter filter circuit, what device is
connected to the transmitter output?
D. A dummy antenna
*
(3AD-9.2)
What is a dummy antenna?
B. A nonradiating load for a transmitter
*
(3AD-9-3)
What materials may a dummy antenna be made?
C. A noninductive resistor
*
(3AD-9.4)
What station accessory is used in place of an antenna during
transmitter tests so that no signal is radiated?
B. A dummy antenna
*
(3AD-9.5)
What is the purpose of a dummy load?
A. To allow off-the-air transmitter testing
*
(3AD-9.6)
How many watts should a dummy load for use with a 100-watt
single- sideband phone transmitter with 50 ohm output be able to
dissipate?
A. A minimum of 100 watts continuous
*
(3AD-10.1)
What is an S-meter?
C. A meter used to measure relative signal strength in a
receiver
*
(3AD-10.2)
A meter that is used to measure relative signal strength in a
receiver is known as what?
A. An S-meter
*
(3AD-11-1.1)
Large amounts of RF energy may cause damage to body tissue,
depending on the wavelength of the signal, the energy density of
the RF field, and other factors. How does RF energy effect body
tissue?
B. It heats the tissue
*
(3AD-11-1.2)
Which body organ is most susceptible to damage from the heating
effects of radio frequency radiation?
A. Eyes
*
(3AD-11-2.1)
Scientists have devoted a great deal of effort to determine safe
RF exposure limits. What organization has established an RF
protection guide?
D. The American National Standards Institute
*
(3AD-11-2.2)
What is the purpose of the ANSI RF protection guide?
B. It sets RF exposure limits under certain circumstances
*
(3AD-11-2.3)
The American National Standards Institute RF protection guide
sets RF exposure limits under certain circumstances. In what
frequency range is the maximum exposure level the most stringent
(lowest)?
C. 300 to 3000 MHz
*
(3AD-11-2.4)
The American National Standards Institute RF protection guide
sets RF exposure limits under certain circumstances. Why is the
maximum exposure level the most stringent (lowest) in the ranges
between 30 MHz and 300 MHz?
D. Human body lengths are close to whole-body resonance in that
range
*
(3AD-11-2.5)
The American National Standards Institute RF protection guide
sets RF exposure limits under certain circumstances. What is
the maximum safe power output to the antenna terminal of a
hand-held VHF or UHF radio, as set by this RF protection guide?
B. 7 watts
*
(3AD-11-3.1)
After you make internal tuning adjustments to your VHF power
amplifier, what should you do before you turn the amplifier on?
C. Be certain all amplifier shielding is fastened in place
*