General › G7
G7 Practical Circuits
38 questions in the pool. Your exam will include 3, one from each group below.
G7A
Power supplies; schematic symbols
- G7A01What is the function of a power supply bleeder resistor?
- G7A02Which of the following components are used in a power supply filter network?
- G7A03Which type of rectifier circuit uses two diodes and a center-tapped transformer?
- G7A04What is characteristic of a half-wave rectifier in a power supply?
- G7A05What portion of the AC cycle is converted to DC by a half-wave rectifier?
- G7A06What portion of the AC cycle is converted to DC by a full-wave rectifier?
- G7A07What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?
- G7A08Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?
- G7A09Which symbol in figure G7-1 represents a field effect transistor?
- G7A10Which symbol in figure G7-1 represents a Zener diode?
- G7A11Which symbol in figure G7-1 represents an NPN junction transistor?
- G7A12Which symbol in Figure G7-1 represents a solid core transformer?
- G7A13Which symbol in Figure G7-1 represents a tapped inductor?
G7B
Digital circuits; amplifiers and oscillators
- G7B01What is the purpose of neutralizing an amplifier?
- G7B02Which of these classes of amplifiers has the highest efficiency?
- G7B03Which of the following describes the function of a two-input AND gate?
- G7B04In a Class A amplifier, what percentage of the time does the amplifying device conduct?
- G7B05How many states does a 3-bit binary counter have?
- G7B06What is a shift register?
- G7B07Which of the following are basic components of a sine wave oscillator?
- G7B08How is the efficiency of an RF power amplifier determined?
- G7B09What determines the frequency of an LC oscillator?
- G7B10Which of the following describes a linear amplifier?
- G7B11For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?
G7C
Transceiver design; filters; oscillators; digital signal processing (DSP)
- G7C01What circuit is used to select one of the sidebands from a balanced modulator?
- G7C02What output is produced by a balanced modulator?
- G7C03What is one reason to use an impedance matching transformer at a transmitter output?
- G7C04How is a product detector used?
- G7C05Which of the following is characteristic of a direct digital synthesizer (DDS)?
- G7C06Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?
- G7C07What term specifies a filter's attenuation inside its passband?
- G7C08Which parameter affects receiver sensitivity?
- G7C09What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?
- G7C10What is an advantage of using I-Q modulation with software-defined radios (SDRs)?
- G7C11Which of these functions is performed by software in a software-defined radio (SDR)?
- G7C12What is the frequency above which a low-pass filter's output power is less than half the input power?
- G7C13What term specifies a filter's maximum ability to reject signals outside its passband?
- G7C14The bandwidth of a band-pass filter is measured between what two frequencies?