2.7 KiB
G6B – Analog and digital integrated circuits (ICs); microwave ICs (MMICs); display devices; RF connectors; ferrite cores
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G6B01 (C) What determines the performance of a ferrite core at different frequencies?
- A. Its conductivity
- B. Its thickness
- C. The composition, or “mix,” of materials used
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D. The ratio of outer diameter to inner diameter
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G6B02 (B) What is meant by the term MMIC?
- A. Multi-Mode Integrated Circuit
- B. Monolithic Microwave Integrated Circuit
- C. Metal Monolayer Integrated Circuit
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D. Mode Modulated Integrated Circuit
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G6B03 (A) Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?
- A. Low power consumption
- B. High power handling capability
- C. Better suited for RF amplification
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D. Better suited for power supply regulation
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G6B04 (C) What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?
- A. 50 MHz
- B. 500 MHz
- C. 4 GHz
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D. 40 GHz
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G6B05 (D) What is an advantage of using a ferrite core toroidal inductor?
- A. Large values of inductance may be obtained
- B. The magnetic properties of the core may be optimized for a specific range of frequencies
- C. Most of the magnetic field is contained in the core
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D. All these choices are correct
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G6B06 (D) What kind of device is an integrated circuit operational amplifier?
- A. Digital
- B. MMIC
- C. Programmable Logic
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D. Analog
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G6B07 (A) Which of the following describes a type N connector?
- A. A moisture-resistant RF connector useful to 10 GHz
- B. A small bayonet connector used for data circuits
- C. A low noise figure VHF connector
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D. A nickel plated version of the PL-259
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G6B08 (D) How is an LED biased when emitting light?
- A. In the tunnel-effect region
- B. At the Zener voltage
- C. Reverse biased
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D. Forward biased
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G6B09 Question Removed (section not renumbered)
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G6B10 (A) How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?
- A. By creating an impedance in the current’s path
- B. It converts common-mode current to differential mode current
- C. By creating an out-of-phase current to cancel the common-mode current
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D. Ferrites expel magnetic fields
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G6B11 (B) What is an SMA connector?
- A. A type-S to type-M adaptor
- B. A small threaded connector suitable for signals up to several GHz
- C. A connector designed for serial multiple access signals
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D. A type of push-on connector intended for high-voltage applications
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G6B12 (C) Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?
- A. PL-259
- B. BNC
- C. RCA Phono
- D. Type N