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ARSGDAT.4BE
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1992-10-04
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13KB
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511 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.
;
;
;
(4BE-1.1)
What is the photoconductive effect?
B. The increased conductivity of an illuminated semiconductor
junction
*
(4BE-1.2)
What happens to photoconductive material when light shines on
it?
A. The conductivity of the material increases
*
(4BE-1.3)
What happens to the resistance of a photoconductive material
when light shines on it?
D. It decreases
*
(4BE-1.4)
What happens to the conductivity of a semiconductor junction
when it is illuminated?
C. It increases
*
(4BE-1.5)
What is an optocoupler?
D. An LED and a phototransistor
*
(4BE-1.6)
What is an optoisolator?
A. An LED and a phototransistor
*
(4BE-1.7)
What is an optical shaft encoder?
B. An array of optocouplers whose light transmission path is
controlled by a rotating wheel
*
(4BE-1.8)
What does the photoconductive effect in crystalline solids
produce a noticeable change in?
D. The resistance of the solid
*
(4BE-2A.1)
What is the meaning of the term time constant of an RC circuit?
D. The time required to charge the capacitor in the circuit to
63.2% of the supply voltage
*
(4BE-2A.2)
What is the meaning of the term time constant of an RL circuit?
C. The time required for the current in the circuit to build up
to 63.2% of the maximum value
*
(4BE-2A.3)
What is the term for the time required for the capacitor in an
RC circuit to be charged to 63.2% of the supply voltage?
B. One time constant
*
(4BE-2A.4)
What is the term for the time required for the current in an RL
circuit to build up to 63.2% of the maximum value?
A. One time constant
*
(4BE-2A.5)
What is the term for the time it takes for a charged capacitor
in an RC circuit to discharge to 36.8% of its initial value of
stored charge?
D. One time constant
*
(4BE-2A.6)
What is meant by back EMF?
D. A voltage that opposes the applied EMF
*
(4BE-2B.1)
After two time constants, the capacitor in an RC circuit is
charged to what percentage of the supply voltage?
C. 86.5%
*
(4BE-2B.2)
After two time constants, the capacitor in an RC circuit is
discharged to what percentage of the starting voltage?
D. 13.5%
*
(4BE-2B.3)
What is the time constant of a circuit having a 100 microfarad
capacitor in series with a 470-kilohm resistor?
C. 47 seconds
*
(4BE-2B.4)
What is the time constant of a circuit having a 220 microfarad
capacitor in parallel with a 1-megohm resistor?
A. 220 seconds
*
(4BE-2B.5)
What is the time constant of a circuit having two 100 microfarad
capacitors and two 470-kilohm resistors all in series?
B. 47 seconds
*
(4BE-2B.6)
What is the time constant of a circuit having two 100 microfarad
capacitors and two 470-kilohm resistors all in parallel?
B. 47 seconds
*
(4BE-2B.7)
What is the time constant of a circuit having two 220 microfarad
capacitors and two 1-megohm resistors all in series?
C. 220 seconds
*
(4BE-2B.8)
What is the time constant of a circuit having two 220 microfarad
capacitors and two 1-megohm resistors all in parallel?
C. 220 seconds
*
(4BE-2B.9)
What is the time constant of a circuit having one 100 microfarad
capacitor, one 220-microfarad capacitor, one 470- kilohm
resistor and one 1-megohm resistor all in series?
B. 101.1 Seconds
*
(4BE-2B.10)
What is the time constant of a circuit having a 470 microfarad
capacitor and a 1-megohm resistor in parallel?
D. 470 seconds
*
(4BE-2B.11)
What is the time constant of a circuit having a 470 microfarad
capacitor in series with a 470-kilohm resistor?
A. 221 seconds
*
(4BE-2B.12)
What is the time constant of a circuit having a 220 microfarad
capacitor in series with a 470-kilohm resistor?
A. 103 seconds
*
(4BE-2B.13)
How long does it take for an initial charge of 20 V DC to
decrease to 7.36 V DC in a 0.01-microfarad capacitor when a 2
megohm resistor is connected across it?
B. 0.02 seconds
*
(4BE-2B.14)
How long does it take for an initial charge of 20 V DC to
decrease to 2.71 V DC in a 0.01-microfarad capacitor when a 2
megohm resistor is connected across it?
A. 0.04 seconds
*
(4BE-2B.15)
How long does it take for an initial charge of 20 V DC to
decrease to 1 V DC in a 0.01-microfarad capacitor when a
2-megohm resistor is connected across it?
D. 0.06 seconds
*
(4BE-2B.16)
How long does it take for an initial charge of 20 V DC to
decrease to 0.37 V DC in a 0.01-microfarad capacitor when a 2
megohm resistor is connected across it?
A. 0.08 seconds
*
(4BE-2B.17)
How long does it take for an initial charge of 20 V DC to
decrease to 0.13 V DC in a 0.01-microfarad capacitor when a 2
megohm resistor is connected across it?
C. 0.1 seconds
*
(4BE-2B.18)
How long does it take for an initial charge of 800 V DC to
decrease to 294 V DC in a 450-microfarad capacitor when a
1-megohm resistor is connected across it?
D. 450 seconds
*
(4BE-2B.19)
How long does it take for an initial charge of 800 V DC to
decrease to 108 V DC in a 450-microfarad capacitor when a
1-megohm resistor is connected across it?
D. 900 seconds
*
(4BE-2B.20)
How long does it take for an initial charge of 800 V DC to
decrease to 39.9 V DC in a 450-microfarad capacitor when a
1-megohm resistor is connected across it?
A. 1350 seconds
*
(4BE-2B.21)
How long does it take for an initial charge of 800 V DC to
decrease to 40.2 V DC in a 450-microfarad capacitor when a
1-megohm resistor is connected across it?
D. Approximately 1350 seconds
*
(4BE-2B.22)
How long does it take for an initial charge of 800 V DC to
decrease to 14.8 V DC in a 450-microfarad capacitor when a
1-megohm resistor is connected across it?
C. Approximately 1804 seconds
*
(4BE-3.1)
What is a Smith Chart?
A. A graph for calculating impedance along transmission lines
*
(4BE-3.2)
What type of coordinate system is used in a Smith Chart?
B. Resistance and reactance circles
*
(4BE-3.3)
What type of calculations can be performed using a Smith Chart?
C. Impedance and SWR values in transmission lines
*
(4BE-3.4)
What are the two families of circles that make up a Smith Chart?
C. Resistance and reactance
*
(4BE-3.5)
What is the only straight line on a blank Smith Chart?
B. The resistance axis
*
(4BE-3.6)
What is the process of normalizing with regard to a Smith Chart?
C. Reassigning resistance values with regard to the prime center
*
(4BE-3.7)
What are the curved lines on a Smith Chart?
D. Portions of reactance circles
*
(4BE-3.8)
What is the third family of circles which are added to a Smith
Chart during the process of solving problems?
C. Standing wave ratio circles
*
(4BE-3.9)
How are the wavelength scales on a Smith Chart calibrated?
B. In portions of transmission line electrical wavelength
*
(4BE-4.1)
What is the impedance of a network comprised of a 0.1 microhenry
inductor in series with a 20-ohm resistor, at 30 MHz? (Specify
your answer in rectangular coordinates.)
A. 20 + j19
*
(4BE-4.2)
What is the impedance of a network comprised of a 0.1 microhenry
inductor in series with a 30-ohm resistor, at 5 MHz? (Specify
your answer in rectangular coordinates.)
B. 30 + j3
*
(4BE-4.3)
What is the impedance of a network comprised of a 10 microhenry
inductor in series with a 40-ohm resistor, at 500 MHz? (Specify
your answer in rectangular coordinates.)
A. 40 + j31400
*
(4BE-4.4)
What is the impedance of a network comprised of a 100 picofarad
capacitor in parallel with a 4000-ohm resistor, at 500 kHz?
(Specify your answer in polar coordinates.)
D. 2490 ohms, / -51.5 degrees
*
(4BE-4.5)
What is the impedance of a network comprised of a 0.001
microfarad capacitor in series with a 400-ohm resistor, at 500
kHz? (Specify your answer in rectangular coordinates.)
A. 400 - j318
*
(4BE-5.1)
What is the impedance of a network comprised of a 100-ohm
reactance inductor in series with a 100-ohm resistor? (Specify
your answer in polar coordinates.)
B. 141 ohms, / 45 degrees
*
(4BE-5.2)
What is the impedance of a network comprised of a 100-ohm
reactance inductor, a 100-ohm-reactance capacitor, and a 100-ohm
resistor all connected in series? (Specify your answer in polar
coordinates.)
C. 100 ohms, / 0 degrees
*
(4BE-5.3)
What is the impedance of a network comprised of a 400-ohm-
reactance capacitor in series with a 300-ohm resistor? (Specify
your answer in polar coordinates.)
D. 500 ohms, / -53.1 degrees
*
(4BE-5.4)
What is the impedance of a network comprised of a 300-ohm-
reactance capacitor, a 600-ohm-reactance inductor, and a 400-
ohm resistor, all connected in series? (Specify your answer in
polar coordinates.)
A. 500 ohms, / 37 degrees
*
(4BE-5.5)
What is the impedance of a network comprised of a 400-ohm-
reactance inductor in parallel with a 300-ohm resistor? (Specify
your answer in polar coordinates.)
A. 240 ohms, / 36.9 degrees
*
(4BE-6A.1)
What is the impedance of a network comprised of a 1.0-
millihenry inductor in series with a 200-ohm resistor, at 30
kHz? (Specify your answer in rectangular coordinates.)
B. 200 + j188
*
(4BE-6A.2)
What is the impedance of a network comprised of a 10- millihenry
inductor in series with a 600-ohm resistor, at 10 kHz? (Specify
your answer in rectangular coordinates.)
C. 600 + j628
*
(4BE-6A.3)
What is the impedance of a network comprised of a 0.01-
microfarad capacitor in parallel with a 300-ohm resistor, at 50
kHz? (Specify your answer in rectangular coordinates.)
D. 159 - j150
*
(4BE-6A.4)
What is the impedance of a network comprised of a 0.1-
microfarad capacitor in series with a 40-ohm resistor, at 50
kHz? (Specify your answer in rectangular coordinates.)
B. 40 - j32
*
(4BE-6A.5)
What is the impedance of a network comprised of a 1.0-
microfarad capacitor in parallel with a 30-ohm resistor, at 5
MHz? (Specify your answer in rectangular coordinates.)
C. 0.000034 - j.032
*
(4BE-6B.1)
What is the impedance of a network comprised of a 100-ohm-
reactance capacitor in series with a 100-ohm resistor? (Specify
your answer in polar coordinates.)
B. 141 ohms, / -45 degrees
*
(4BE-6B.2)
What is the impedance of a network comprised of a 100-ohm-
reactance capacitor in parallel with a 100-ohm resistor?
(Specify your answer in polar coordinates.)
C. 71 ohms, / -45 degrees
*
(4BE-6B.3)
What is the impedance of a network comprised of a 300-ohm-
reactance inductor in series with a 400-ohm resistor? (Specify
your answer in polar coordinates.)
B. 500 ohms, / 37 degrees
*
(4BE-6B.4)
What is the impedance of a network comprised of a 100-ohm-
reactance inductor in parallel with a 100-ohm resistor? (Specify
your answer in polar coordinates.)
A. 71 ohms, / 45 degrees
*
(4BE-6B.5)
What is the impedance of a network comprised of a 300-ohm-
reactance capacitor in series with a 400-ohm resistor? (Specify
your answer in polar coordinates.)
D. 500 ohms, / -37 degrees
*