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- Question
What frequency range is the High Frequency band?
Options- A. 100 kHz
- B. 1 GHz
- C. 30 to 300 MHz
- D. 3 to 30 MHz
- Correct Answer
- 3 to 30 MHz
ExplanationThe HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz. - 1. '.MOV' extension refers usually to what kind of file?
Options- A. Image file
- B. Animation/movie file
- C. Audio file
- D. MS Office document Discuss
- 2. In which decade was the SPICE simulator introduced?
Options- A. 1950s
- B. 1960s
- C. 1970s
- D. 1980s Discuss
- 3. Who co-founded Hotmail in 1996 and then sold the company to Microsoft?
Options- A. Shawn Fanning
- B. Ada Byron Lovelace
- C. Sabeer Bhatia
- D. Ray Tomlinson Discuss
- 4. The first step to getting output from a laser is to excite an active medium. What is this process called?
Options- A. Pumping
- B. Exciting
- C. Priming
- D. Raising Discuss
- 5. '.JPG' extension refers usually to what kind of file?
Options- A. System file
- B. Animation/movie file
- C. MS Encarta document
- D. Image file Discuss
- 6. What do we call a network whose elements may be separated by some distance? It usually involves two or more small networks and dedicated high-speed telephone lines.
Options- A. URL (Universal Resource Locator)
- B. LAN (Local Area Network)
- C. WAN (Wide Area Network)
- D. World Wide Web Discuss
- 7. The most common format for a home video recorder is VHS. VHS stands for...?
Options- A. Video Home System
- B. Very high speed
- C. Video horizontal standard
- D. Voltage house standard Discuss
- 8. What is the term to ask the computer to put information in order numerically or alphabetically?
Options- A. Crop
- B. Report
- C. Record
- D. Sort Discuss
- 9. The input used by an antenna or cable to a TV set uses frequencies called...?
Options- A. IF
- B. RF
- C. AF
- D. SAP Discuss
- 10. What are three types of lasers?
Options- A. Gas, metal vapor, rock
- B. Pointer, diode, CD
- C. Diode, inverted, pointer
- D. Gas, solid state, diode Discuss
Technology problems
Search Results
Correct Answer: Animation/movie file
Correct Answer: 1970s
Explanation:
SPICE (Simulation Program with Integrated Circuit Emphasis) was introduced in May 1972 by the University of Berkeley, California.
Correct Answer: Sabeer Bhatia
Correct Answer: Pumping
Explanation:
A collection of atoms or molecules that can be excited to a higher energy state is called an active medium. Before lasing can occur, the active media is "pumped". The process of raising the atoms in the active media from a lower energy state to a higher state is like pumping water up from a well.
Correct Answer: Image file
Correct Answer: WAN (Wide Area Network)
Correct Answer: Video Home System
Explanation:
JVC (Japan Victor Corporation) and Matsushita (Panasonic) developed the VHS format to compete with Sony which developed the Beta format as the first home video cassette recorder. VHS originally stood for Vertical Helical Scan, but now means Video Home System.
Correct Answer: Sort
Correct Answer: RF
Explanation:
RF is radio frequency. IF is intermediate frequency used inside the TV for processing. AF is audio frequency. SAP is second audio program which may have another language or other soundtrack as an option to the main soundtrack.
Correct Answer: Gas, solid state, diode
Explanation:
The first laser was a solid state laser. Solid state refers to any solid material like a glass rod. Diode lasers are very common because they are used to read compact disks and digital video disks in computers, CD players, and DVD players. Before diode lasers, the most common type of laser may have been the helium-neon laser, in which the active medium is a combination of the two gasses helium and neon.
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