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- Question
'.MPG' extension refers usually to what kind of file?
Options- A. WordPerfect Document file
- B. MS Office document
- C. Animation/movie file
- D. Image file
- Correct Answer
- Animation/movie file
- 1. What does VVVF stand for?
Options- A. Variant Voltage Vile Frequency
- B. Variable Velocity Variable Fun
- C. Very Very Vicious Frequency
- D. Variable Voltage Variable Frequency Discuss
- 2. '.BAK' extension refers usually to what kind of file?
Options- A. Backup file
- B. Audio file
- C. Animation/movie file
- D. MS Encarta document Discuss
- 3. A given signal's second harmonic is twice the given signal's __________ frequency...?
Options- A. Fourier
- B. Foundation
- C. Fundamental
- D. Field Discuss
- 4. What is the relationship between resistivity r and conductivity s?
Options- A. R = s2
- B. R = s
- C. R > s
- D. R = 1/s Discuss
- 5. Which is a type of Electrically-Erasable Programmable Read-Only Memory?
Options- A. Flash
- B. Flange
- C. Fury
- D. FRAM Discuss
- 6. The NTSC (National Television Standards Committee) is also used in the country of...?
Options- A. Japan
- B. France
- C. Germany
- D. England Discuss
- 7. 'DB' computer abbreviation usually means?
Options- A. Database
- B. Double Byte
- C. Data Block
- D. Driver Boot Discuss
- 8. "FET" is a type of transistor, Its full name is ________ Effect Transistor...?
Options- A. Field
- B. Factor
- C. Flash
- D. Force Discuss
- 9. In which decade with the first transatlantic radio broadcast occur?
Options- A. 1850s
- B. 1860s
- C. 1870s
- D. 1900s Discuss
- 10. What was the first ARPANET message?
Options- A. "lo"
- B. "hello world"
- C. "mary had a little lamb"
- D. "cyberspace, the final frontier" Discuss
Technology problems
Search Results
Correct Answer: Variable Voltage Variable Frequency
Explanation:
It is a method of controlling the speed of an AC induction motor, whereby speed, current and torque can all be accurately controlled.
Correct Answer: Backup file
Correct Answer: Fundamental
Explanation:
A given signal's second harmonic is twice the given signal's fundamental frequency. Harmonics are generated when there are non-linearities in an amplifier (there are always non-linearities). The worse the non-linearities, the more harmonics. A signal at 27.5 MHz (approximate frequency for US citizen's band) would have a second harmonic at 55.0 MHz (on US channel 2!). Can you see why there might be problems? A CB operator might do well to place a low-pass filter on his radio.
Correct Answer: R = 1/s
Correct Answer: Flash
Explanation:
It's commonly used for MP3 players, computer BIOS code and "thumb" drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles) so they're not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk) it is an excellent choice for storing the operating code for small personal electronics like PDAs, cell phones, digital cameras, and the data in items like MP3 players.
Correct Answer: Japan
Correct Answer: Database
Correct Answer: Field
Explanation:
The terminals of FETs are called gate, drain and source. You might be more familiar with bipolar junction transistors (BJTs), which have terminals called base, collector and emitter. FETs were conceptualized first, but BJTs were easier to produce and so developed sooner.
Correct Answer: 1900s
Explanation:
On December 12, 1901, a radio transmission received by Guglielmo Marconi resulted in the first transmission of a transatlantic wireless signal (Morse Code) from Poldhu, Cornwall, to St. John's, Newfoundland.
Correct Answer: "lo"
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