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WorksheetsHam Radio Extra Questions Till 2020 Set E6E
Total questions: 12
Worksheet time: 12mins
Name
Class
Date
1.
E6E01 Which of the following is true of a charge-coupled device (CCD) ?
a)
A. Its phase shift changes rapidly with frequency
b)
B. It is a CMOS analog-to-digital converter
c)
C. It samples an analog signal and passes it in stages from the input to the output
d)
D. It is used in a battery charger circuit
2.
E6E02 Which of the following device packages is a through-hole type?
a)
A. DIP
b)
B. PLCC
c)
C. Ball grid array
d)
D. SOT
3.
E6E03 Which of the following materials is likely to provide the highest frequency of operation when used in MMICs?
a)
A. Silicon
b)
B. Silicon nitride
c)
C. Silicon dioxide
d)
D. Gallium nitride
4.
E6E04 Which is the most common input and output impedance of circuits that use MMICs?
a)
A. 50 ohms
b)
B. 300 ohms
c)
C. 450 ohms
d)
D. 10 ohms
5.
E6E05 Which of the following noise figure values is typical of a low-noise UHF preamplifier?
a)
A. 2 dB
b)
B. -10 dB
c)
C. 44 dBm
d)
D. -20 dBm
6.
E6E06 What characteristics of the MMIC make it a popular choice for VHF through microwave circuits?
a)
A. The ability to retrieve information from a single signal even in the presence of other strong signals
b)
B. Plate current that is controlled by a control grid
c)
C. Nearly infinite gain, very high input impedance, and very low output impedance
d)
D. Controlled gain, low noise figure, and constant input and output impedance over the specified frequency range
7.
E6E07 Which of the following is typically used to construct a MMIC-based microwave amplifier?
a)
A. Ground-plane construction
b)
B. Microstrip construction
c)
C. Point-to-point construction
d)
D. Wave-soldering construction
8.
E6E08 How is voltage from a power supply normally furnished to the most common type of monolithic microwave integrated circuit (MMIC) ?
a)
A. Through a resistor and/or RF choke connected to the amplifier output lead
b)
B. MMICs require no operating bias
c)
C. Through a capacitor and RF choke connected to the amplifier input lead
d)
D. Directly to the bias voltage (VCC IN) lead
9.
E6E09 Which of the following component package types would be most suitable for use at frequencies above the HF range?
a)
A. TO-220
b)
B. Axial lead
c)
C. Radial lead
d)
D. Surface mount
10.
E6E10 What is the packaging technique in which leadless components are soldered directly to circuit boards?
a)
A. Direct soldering
b)
B. Virtual lead mounting
c)
C. Stripped lead
d)
D. Surface mount
11.
E6E11 What is a characteristic of DIP packaging used for integrated circuits?
a)
A. Package mounts in a direct inverted position
b)
B. Low leakage doubly insulated package
c)
C. Two chips in each package (Dual In Package)
d)
D. A total of two rows of connecting pins placed on opposite sides of the package (Dual In-line Package)
12.
E6E12 Why are high-power RF amplifier ICs and transistors sometimes mounted in ceramic packages?
a)
A. High-voltage insulating ability
b)
B. Better dissipation of heat
c)
C. Enhanced sensitivity to light
d)
D. To provide a low-pass frequency response
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