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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.4BF
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1992-10-04
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6KB
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276 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.
;
;
;
(4BF-1A.1)
What is an enhancement-mode FET?
D. An FET without a channel; no current occurs with zero gate
voltage
*
(4BF-1B.1)
What is a depletion-mode FET?
A. An FET that has a channel with no gate voltage applied; a
current flows with zero gate voltage
*
(4BF-1C.1)
What is the schematic symbol for an N-channel MOSFET?
A
*
(4BF-1C.2)
What is the schematic symbol for a P-channel MOSFET?
B
*
(4BF-1C.3)
What is the schematic symbol for an N-channel dual-gate MOSFET?
C
*
(4BF-1C.4)
What is the schematic symbol for a P-channel dual-gate MOSFET?
D
*
(4BF-1C.5)
Why do many MOSFET devices have built-in gate-protective Zener
diodes?
D. The gate-protective Zener diode prevents the gate insulation
from being punctured by small static charges or excessive
voltages
*
(4BF-1D.1)
What do the initials CMOS stand for?
C. Complementary metal-oxide semiconductor
*
(4BF-1D.2)
Why are special precautions necessary in handling FET and CMOS
devices?
A. They are susceptible to damage from static charges
*
(4BF-1E.1)
What is the schematic symbol for an N-channel junction FET?
A
*
(4BF-1E.2)
How does the input impedance of a field-effect transistor
compare with that of a bipolar transistor?
D. An FET has high input impedance; a bipolar transistor has low
input impedance
*
(4BF-1E.3)
What are the three terminals of a field-effect transistor?
D. Gate, drain, source
*
(4BF-1F.1)
What is the schematic symbol for a P-channel junction FET?
B
*
(4BF-1F.2)
What are the two basic types of junction field-effect
transistors?
A. N-channel and P-channel
*
(4BF-2.1)
What is an operational amplifier?
A. A high-gain, direct-coupled differential amplifier whose
characteristics are determined by components external to the
amplifier unit
*
(4BF-2.2)
What is the schematic symbol for an operational amplifier?
A
*
(4BF-2.3)
What would be the characteristics of the ideal op-amp?
B. Infinite input impedance, zero output impedance, infinite
gain, flat frequency response
*
(4BF-2.4)
What determines the gain of a closed-loop op-amp circuit?
A. The external feedback network
*
(4BF-2.5)
What is meant by the term op-amp offset voltage?
C. The potential between the amplifier-input terminals of the
op-amp in a closed-loop condition
*
(4BF-2.6)
What is the input impedance of a theoretically ideal op-amp?
D. Very high
*
(4BF-2.7)
What is the output impedance of a theoretically ideal op-amp?
A. Very low
*
(4BF-3.1)
What is a phase-locked loop circuit?
D. An electronic servo loop consisting of a phase detector, a
low-pass filter and voltage-controlled oscillator
*
(4BF-3.2)
What functions are performed by a phase-locked loop?
D. Frequency synthesis, FM demodulation
*
(4BF-3.3)
A circuit compares the output from a voltage-controlled
oscillator and a frequency standard. The difference between the
two frequencies produces an error voltage that changes the
voltage- controlled oscillator frequency. What is the name of
the circuit?
B. A phase-locked loop
*
(4BF-4.1)
What do the initials TTL stand for?
B. Transistor-transistor logic
*
(4BF-4.2)
What is the recommended power supply voltage for TTL series
integrated circuits?
C. 5.00 volts
*
(4BF-4.3)
What logic state do the inputs of a TTL device assume if they
are left open?
A. A high logic state
*
(4BF-4.4)
What level of input voltage is high in a TTL device operating
with a 5-volt power supply?
A. 2.0 to 5.5 volts
*
(4BF-4.5)
What level of input voltage is low in a TTL device operating
with a 5-volt power supply?
C. -0.6 to 0.8 volts
*
(4BF-4.6)
Why do circuits containing TTL devices have several bypass
capacitors per printed circuit board?
D. To prevent switching transients from appearing on the supply
line
*
(4BF-5.1)
What is a CMOS IC?
B. A chip with P-channel and N-channel transistors
*
(4BF-5.2)
What is one major advantage of CMOS over other devices?
B. Low current consumption
*
(4BF-5.3)
Why do CMOS digital integrated circuits have high immunity to
noise on the input signal or power supply?
C. The input switching threshold is about one-half the power
supply voltage
*
(4BF-6.1)
What is the name for a vacuum tube that is commonly found in
television cameras used for amateur television?
C. A vidicon tube
*
(4BF-6.2)
How is the electron beam deflected in a vidicon?
D. By varying electromagnetic fields
*
(4BF-6.3)
What type of CRT deflection is better when high-frequency waves
are to be displayed on the screen?
D. Electrostatic
*