Technology problems
- 1. '.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
Correct Answer: Backup file
- 2. 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
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.
- 3. '.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 Discuss
Correct Answer: Animation/movie file
- 4. The NTSC (National Television Standards Committee) is also used in the country of...?
Options- A. Japan
- B. France
- C. Germany
- D. England Discuss
Correct Answer: Japan
- 5. 'DB' computer abbreviation usually means?
Options- A. Database
- B. Double Byte
- C. Data Block
- D. Driver Boot Discuss
Correct Answer: Database
- 6. "FET" is a type of transistor, Its full name is ________ Effect Transistor...?
Options- A. Field
- B. Factor
- C. Flash
- D. Force Discuss
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.
- 7. In which decade with the first transatlantic radio broadcast occur?
Options- A. 1850s
- B. 1860s
- C. 1870s
- D. 1900s Discuss
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.
- 8. What was the first ARPANET message?
Options- A. "lo"
- B. "hello world"
- C. "mary had a little lamb"
- D. "cyberspace, the final frontier" Discuss
Correct Answer: "lo"
- 9. What does AC and DC stand for in the electrical field?
Options- A. Alternating Current and Direct Current
- B. A Rock Band from Australia
- C. Average Current and Discharged Capacitor
- D. Atlantic City and District of Columbia Discuss
Correct Answer: Alternating Current and Direct Current
Explanation:
Electricity is voltage and current. Voltage is electrical pressure, and current is the flow of charged particles. The difference between alternating current (AC) and direct current (DC) is that the electrons in an AC circuit regularly reverse their direction. In a DC circuit electrons always flow in the same direction.
- 10. Which consists of two plates separated by a dielectric and can store a charge?
Options- A. Inductor
- B. Capacitor
- C. Transistor
- D. Relay Discuss
Correct Answer: Capacitor
Explanation:
Useful in tuning and filtering circuits, it blocks DC while passing AC. How much charge a capacitor can store is its capacitance, measured in farads.nn
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