Advanced Amateur A-002 Practice Exam 
Practice Exam for Section  A-002 of the ISED Advanced Amateur Radio Examination.
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What are the two stable operating conditions of a silicon controlled rectifier (SCR)? *
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What are the two basic types of junction field-effect transistors (JFET)? *
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If a Zener diode rated at 10 V and 50 watts was operated at maximum dissipation rating, it would conduct ____ amperes: *
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Piezoelectricity is generated by: *
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A device which helps with receiver overload and spurious responses at VHF, UHF and above may be installed in the receiver front end. It is called a: *
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Electron conduction in an n-channel enhancement MOSFET is associated with: *
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Where you require bandwidth at VHF and higher frequencies about equal to a television channel, a good choice of filter is the: *
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Which of the following materials is used to make a semiconductor? *
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What is a NOT gate (also known as an INVERTER)? *
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What is an AND gate? *
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What are the advantages of using an op-amp instead of LC elements in an audio filter? *
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What determines the output impedance of a FET common-source amplifier? *
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Which of the following classes of amplifier would provide the highest efficiency in the output stage of a CW, RTTY or FM transmitter? *
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A quartz crystal filter is superior to an LC filter for narrow bandpass applications because of the: *
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What is one common use for PIN diodes? *
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What is a crystal lattice filter? *
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What determines the input impedance of a FET common-source amplifier? *
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The alpha of a bipolar transistor is specified for what configuration? *
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What determines the gain of a closed-loop op-amp circuit? *
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In a multivibrator circuit, when one transistor conducts, the other is: *
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For what portion of a cycle does a Class AB amplifier operate? *
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What is the alpha of a bipolar transistor in common base configuration? *
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Beta of a bipolar transistor is equal to: *
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A frequency multiplier circuit must be operated in: *
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Which of the following devices has anode, cathode, and gate? *
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Which of the following classes of amplifier provides the highest efficiency? *
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The power-handling capability of most Zener diodes is rated at 25 degrees C or approximately room temperature. If the temperature is increased, the power handling capability is: *
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Why do many MOSFET devices have built-in gate protective Zener diodes? *
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An element which is sometimes an insulator and sometimes a conductor is called a: *
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What are the major ratings for junction diodes? *
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What are the principal uses of an op-amp RC active filter in amateur circuitry? *
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In the common collector amplifier, when the input and output signals are compared: *
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What is an inverting op-amp circuit? *
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In a frequency multiplier circuit, an inductance (L1) and a variable capacitor (C2) are connected in series between VCC+ and ground. The collector of a transistor is connected to a tap on L1. The purpose of the variable capacitor is to: *
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Which filter type is described as having ripple in the passband and a sharp cutoff? *
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Electron conduction in an n-channel depletion type MOSFET is associated with: *
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What is a NAND gate? *
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In a frequency multiplier circuit, an inductance (L1) and a variable capacitor (C2) are connected in series between VCC+ and ground. The collector of a transistor is connected to a tap on L1. A fixed capacitor (C3) is connected between the VCC+ side of L1 and ground. C3 is a: *
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What stage in a transmitter would change a 5.3-MHz input signal to 14.3 MHz? *
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What is an OR gate? *
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What is a non-inverting op-amp circuit? *
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What is an EXCLUSIVE NOR gate? *
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Which class of amplifier operates over less than 180 degrees of the cycle? *
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A Zener diode is a device used to: *
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What are the majority charge carriers in P-type semiconductor material? *
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The FET amplifier common source circuit is similar to which of the following bipolar transistor amplifier circuits? *
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What are the distinguishing features of a Butterworth filter? *
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What is the primary advantage of the Chebyshev filter over the Butterworth filter? *
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What is the mixing process? *
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Alpha of a bipolar transistor is equal to: *
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What is a depletion-mode FET? *
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The silicon controlled rectifier (SCR) is a member of which family? *
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Which component conducts electricity from a negative emitter to a positive collector when its base voltage is made positive? *
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In the common base amplifier, the input impedance, when compared to the output impedance is: *
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Why are special precautions necessary in handling FET and CMOS devices? *
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Resonant cavities are used by amateurs as a: *
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Substances such as silicon in a pure state are usually good: *
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In the common emitter amplifier, when the input and output signals are compared: *
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What are the principal frequencies that appear at the output of a mixer circuit? *
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What is meant by the term op-amp offset voltage? *
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The beta of a bipolar transistor is specified for what configurations? *
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In a frequency multiplier circuit, the input signal is coupled to the base of a transistor through a capacitor. A radio frequency choke is connected between the base of the transistor and ground. The capacitor is: *
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What are the three general groupings of filters? *
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Which class of amplifier provides the least efficiency? *
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The silicon controlled rectifier (SCR) is what type of device? *
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Crystals are not applicable to which of the following? *
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What are the majority charge carriers in N-type semiconductor material? *
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What is a common use for point contact diodes? *
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What type of semiconductor material contains more free electrons than pure germanium or silicon crystals? *
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Hole conduction in a p-channel enhancement type MOSFET is associated with: *
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In a bipolar transistor, the change of collector current with respect to base current is called: *
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In a frequency multiplier circuit, an inductance (L1) and a variable capacitor (C2) are connected in series between VCC+ and ground. The collector of a transistor is connected to a tap on L1. C2 in conjunction with L1 operate as a: *
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On VHF and above, 1/4 wavelength coaxial cavities are used to give protection from high-level signals. For a frequency of approximately 50 MHz, the diameter of such a device would be about 10 cm (4 in). What would be its approximate length? *
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What two elements widely used in semiconductor devices exhibit both metallic and non-metallic characteristics? *
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Which of the following properties does not apply to a crystal when used in an oscillator circuit? *
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What are the advantages of a Darlington pair audio amplifier? *
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What is a common use for the hot-carrier (Schottky) diode? *
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What is the alpha of a bipolar transistor? *
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What is an enhancement-mode FET? *
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In the common base amplifier, when the input and output signals are compared: *
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Which component conducts electricity from a positive emitter to a negative collector when its base is made negative? *
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Crystal oscillators, filters and microphones depend upon which principle? *
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Which class of amplifier operates over the full cycle? *
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What is the beta of a bipolar transistor? *
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For what portion of a signal cycle does a Class A amplifier operate? *
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What type of digital logic is also known as a latch? *
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Silicon, in its pure form, is: *
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Which class of amplifier has the poorest linearity and the most distortion? *
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Which of the following is a PNPN device? *
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What is the input impedance of a theoretically ideal op-amp? *
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For what portion of a signal cycle does a Class C amplifier operate? *
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Under what operating condition does a silicon controlled rectifier (SCR) exhibit electrical characteristics similar to a forward-biased silicon rectifier? *
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What is the output impedance of a theoretically ideal op-amp? *
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What limits the maximum forward current in a junction diode? *
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When it is gated "on", the silicon controlled rectifier (SCR) exhibits electrical characteristics similar to a: *
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What is the primary advantage of the Butterworth filter over the Chebyshev filter? *
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What factor determines the bandwidth and response shape of a crystal lattice filter? *
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Hole conduction in a p-channel depletion type MOSFET is associated with: *
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What is an operational amplifier (op-amp)? *
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What term is most appropriate for a high gain, direct-coupled differential amplifier whose characteristics are determined by components mounted externally? *
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What type of semiconductor diode varies its internal capacitance as the voltage applied to its terminals varies? *
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The FET amplifier source follower circuit is another name for: *
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What would be the characteristics of the ideal op-amp? *
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The FET amplifier common gate circuit is similar to which of the following bipolar transistor amplifier circuits? *
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Structurally, what are the two main categories of semiconductor diodes? *
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What is a bistable multivibrator? *
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What are the distinguishing features of a Chebyshev filter? *
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Which of the following filter types is not suitable for use at audio and low radio frequencies? *
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Crystals are sometimes used in a circuit which has an output close to an integral multiple of the crystal frequency. This circuit is called: *
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The main advantage of a crystal oscillator over a tuned LC oscillator is: *
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What occurs when an excessive amount of signal energy reaches the mixer circuit? *
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Which class of amplifier has the highest linearity and least distortion? *
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What is a flip-flop circuit? *
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In what application is gallium-arsenide used as a semiconductor material in preference to germanium or silicon? *
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The control element in the silicon controlled rectifier (SCR) is called the: *
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For single-sideband phone emissions, what would be the bandwidth of a good crystal lattice filter? *
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The current gain of a bipolar transistor in common emitter or common collector compared to common base configuration is: *
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How does the input impedance of a field-effect transistor (FET) compare with that of a bipolar transistor? *
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What is a NOR gate? *
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What is an EXCLUSIVE OR gate? *
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The FET amplifier common drain circuit is similar to which of the following bipolar transistor amplifier circuits? *
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A semiconductor is said to be doped when it has added to it small quantities of: *
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For what portion of a cycle does a Class B amplifier operate? *
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Electrically, what does a crystal look like? *
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In a circuit where the components are tuned to resonate at a higher frequency than applied, the circuit is most likely a: *
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What are the three terminals of a junction field-effect transistor (JFET)? *
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What are the three terminals of a silicon controlled rectifier (SCR)? *
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In a frequency multiplier circuit, an inductance (L1) and a variable capacitor (C2) are connected in series between VCC+ and ground. The collector of a transistor is connected to a tap on L1. A fixed capacitor (C3) is connected between the VCC+ side of L1 and ground. The purpose of C3 is to: *
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What type of semiconductor material contains fewer free electrons than pure germanium or silicon crystals? *
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What is the principal characteristic of a Zener diode? *
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In amateur radio equipment, which is the major application for the silicon controlled rectifier (SCR)? *
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When a silicon controlled rectifier (SCR) is triggered, to what other semiconductor diode are its electrical characteristics similar (as measured between its cathode and anode)? *
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