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Precision Software Appli…tions Silver Collection 1
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Precision Software Applications Silver Collection Volume One (PSM) (1993).iso
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arsg10.exe
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ARSGDAT.4AF
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1992-10-04
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9KB
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425 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.
;
;
;
(4AF-1.1)
What is the schematic symbol for a semiconductor
diode/rectifier?
D
*
(4AF-1.2)
Structurally, what are the two main categories of semiconductor
diodes?
A. Junction and point contact
*
(4AF-1.3)
What is the schematic symbol for a Zener diode?
D
*
(4AF-1.4)
What are the two primary classifications of Zener diodes?
C. Voltage regulator and voltage reference
*
(4AF-1.5)
What is the principal characteristic of a Zener diode?
B. A constant voltage under conditions of varying current
*
(4AF-1.6)
What is the range of voltage ratings available in Zener diodes?
A. 2.4 volts to 200 volts
*
(4AF-1.7)
What is the schematic symbol for a tunnel diode?
C
*
(4AF-1.8)
What is the principal characteristic of a tunnel diode?
C. A negative resistance region
*
(4AF-1.9)
What special type of diode is capable of both amplification and
oscillation?
C. Tunnel diodes
*
(4AF-1.10)
What is the schematic symbol for a varactor diode?
D
*
(4AF-1.11)
What type of semiconductor diode varies its internal capacitance
as the voltage applied to its terminals varies?
A. A varactor diode
*
(4AF-1.12)
What is the principal characteristic of a varactor diode?
B. Its internal capacitance varies with the applied voltage
*
(4AF-1.13)
What is a common use of a varactor diode?
D. As a voltage controlled capacitance
*
(4AF-1.14)
What is a common use of a hot-carrier diode?
D. As VHF and UHF mixers and detectors
*
(4AF-1.15)
What limits the maximum forward current in a junction diode?
B. The junction temperature
*
(4AF-1.16)
How are junction diodes rated?
D. Maximum forward current and PIV
*
(4AF-1.17)
What is a common use for point contact diodes?
C. As an RF detector
*
(4AF-1.18)
What type of diode is made of a metal whisker touching a very
small semi-conductor die?
D. Point contact diode
*
(4AF-1.19)
What is common use for PIN diodes?
C. As an RF switch
*
(4AF-1.20)
What special type of diode is often use for RF switches,
attenuators, and various types of phase shifting devices?
C. PIN diodes
*
(4AF-2.1)
What is the schematic symbol for a PNP transistor?
C
*
(4AF-2.2)
What is the schematic symbol for an NPN transistor?
B
*
(4AF-2.3)
What are the three terminals of a bipolar transistor?
B. Base, collector and emitter
*
(4AF-2.4)
What is the meaning of the term alpha with regard to bipolar
transistors?
C. The change of collector current with respect to emitter
current
*
(4AF-2.5)
What is the term used to express the ratio of change in DC
collector current to a change in emitter current in a bipolar
transistor?
C. Alpha
*
(4AF-2.6)
What is the meaning of the term beta with regard to bipolar
transistors?
A. The change of collector current with respect to base current
*
(4AF-2.7)
What is the term used to express the ratio of change in the DC
collector current to a change in base current in a bipolar
transistor?
B. Beta
*
(4AF-2.8)
What is the meaning of the term alpha cutoff frequency with
regard to bipolar transistors?
B. The practical upper frequency limit of a transistor in common
base configuration
*
(4AF-2.9)
What is the term used to express that frequency at which the
grounded base current gain has decreased to 0.7 of the gain
obtainable at 1 kHz in a transistor?
B. Alpha cutoff frequency
*
(4AF-2.10)
What is the meaning of the term beta cutoff frequency with
regard to a bipolar transistor?
B. That frequency at which the grounded emitter current gain has
decreased to 0.7 of that obtainable at 1 kHz in a transistor
*
(4AF-2.11)
What is the meaning of the term transition region with regard to
a transistor?
A. An area of low charge density around the P-N junction
*
(4AF-2.12)
What does it mean for a transistor to be fully saturated?
A. The collector current is at its maximum value
*
(4AF-2.13)
What does it mean for a transistor to be cut off?
C. No current flows from emitter to collector
*
(4AF-2.14)
What is the schematic symbol for a unijunction transistor?
C
*
(4AF-2.15)
What are the elements of a unijunction transistor?
A. Base 1, base 2 and emitter
*
(4AF-2.16)
For best efficiency and stability, where on the load-line should
a solid-state power amplifier be operated?
A. Just below the saturation point
*
(4AF-2.17)
What two elements widely used in semiconductor devices exhibit
both metallic and non-metallic characteristics?
B. Silicon and germanium
*
(4AF-3.1)
What is the schematic symbol for a silicon controlled rectifier?
D
*
(4AF-3.2)
What are the three terminals of an SCR?
A. Anode, cathode and gate
*
(4AF-3.3)
What are the two stable operating conditions of an SCR?
A. Conducting and nonconducting
*
(4AF-3.4)
When an SCR is in the triggered or on condition, its electrical
characteristics are similar to what other solid-state device (as
measured between its cathode and anode)?
A. The junction diode
*
(4AF-3.5)
Under what operating condition does an SCR exhibit electrical
characteristics similar to a forward-biased silicon rectifier?
D. When it is gated "on"
*
(4AF-3.6)
What is the schematic symbol for a TRIAC?
A
*
(4AF-3.7)
What is the transistor called which is fabricated as two
complementary SCRs in parallel with a common gate terminal?
A. TRIAC
*
(4AF-3.8)
What are the three terminals of a TRIAC?
B. Gate, anode 1 and anode 2
*
(4AF-4.1)
What is the schematic symbol for a light-emitting diode?
B
*
(4AF-4.2)
What is the normal operating voltage and current for a
light-emitting diode?
C. 1.7 volts and 20 mA
*
(4AF-4.3)
What type of bias is required for an LED to produce
luminescence?
B. Forward bias
*
(4AF-4.4)
What are the advantages of using an LED?
A. Low power consumption and long life
*
(4AF-4.5)
What colors are available in LEDs?
D. Red, green, orange, white and yellow
*
(4AF-4.6)
What is the schematic symbol for a neon lamp?
C
*
(4AF-4.7)
What type neon lamp is usually used in amateur radio work?
B. NE-2
*
(4AF-4.8)
What is the DC starting voltage for an NE-2 neon lamp?
A. Approximately 67 volts
*
(4AF-4.9)
What is the AC starting voltage for an NE-2 neon lamp?
D. Approximately 48-V AC RMS
*
(4AF-4.10)
How can a neon lamp be used to check for the presence of RF?
D. A neon lamp will light in the presence of RF
*
(4AF-5.1)
What would be the bandwidth of a good crystal lattice band-pass
filter for emission J3E?
B. 2.1 kHz at -6 dB
*
(4AF-5.2)
What would be the bandwidth of a good crystal lattice band-pass
filter for emission A3E?
C. 6 kHz at -6 dB
*
(4AF-5.3)
What is a crystal lattice filter?
D. A filter with narrow bandwidth and steep skirts made using
quartz crystals
*
(4AF-5.4)
What technique can be used to construct low cost, high
performance crystal lattice filters?
D. Etching and grinding
*
(4AF-5.5)
What determines the bandwidth and response shape in a crystal
lattice filter?
A. The relative frequencies of the individual crystals
*