Exercise 1

Question 11 :

Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial intelligence?


A). Alan Turing
B). Jeff Bezos
C). George Boole
D). Charles Babbage
Answer : Option A

Question 12 :

Who developed Yahoo?


A). Dennis Ritchie & Ken Thompson
B). David Filo & Jerry Yang
C). Vint Cerf & Robert Kahn
D). Steve Case & Jeff Bezos
Answer : Option B

Question 13 :

Made from a variety of materials, such as carbon, which inhibits the flow of current...?


A). Choke
B). Inductor
C). Resistor
D). Capacitor
Answer : Option C

Explanation :

So named because it resists (or inhibits) the flow of current.


Question 14 :

The most common format for a home video recorder is VHS. VHS stands for...?


A). Video Home System
B). Very high speed
C). Video horizontal standard
D). Voltage house standard
Answer : Option A

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.


Question 15 :

What does VVVF stand for?


A). Variant Voltage Vile Frequency
B). Variable Velocity Variable Fun
C). Very Very Vicious Frequency
D). Variable Voltage Variable Frequency
Answer : Option D

Explanation :

It is a method of controlling the speed of an AC induction motor, whereby speed, current and torque can all be accurately controlled.