Exercise 3

Question 11 :

Who invented the phonograph?


A). Thomas Edison
B). John Kruesi
C). Jules Levy
D). Alexander Graham Bell
Answer : Option B

Explanation :

John Kruesi was a mechanic for Edison, and Kruesi built the phonograph. Edison designed it, and later improved the phonograph.


Question 12 :

What beverage was invented by Charles Alderton in 1885 in Waco, Texas?


A). Cream soda
B). Coca-Cola
C). Dr. Pepper
D). Sprite
Answer : Option C

Explanation :

The cherry-flavored cola made its debut at Morrison's Old Corner Drugstore.


Question 13 :

Who invented fuel cells in 1839?


A). Buckminster Fuller
B). Sir William Grove
C). Sylvester Graham
D). Joyce Hall
Answer : Option B

Explanation :

Fuel cells were invented in 1839 by Sir William Grove.


Question 14 :

The ELECTRIC BATTERY, who's charged with inventing this one?


A). Hertz
B). Amper
C). Galvani
D). Volta
Answer : Option D

Explanation :

Italian, Alessandro Volta discovered the first practical battery in 1800. Life would be very different without batteries.


Question 15 :

In which decade was the ARRL founded?


A). 1940s
B). 1930s
C). 1920s
D). 1910s
Answer : Option D

Explanation :

On April 6, 1914, Hiram Percy Maxim proposed the formation of the American Radio Relay League.