Exercise 2

Question 31 :

What African-American inventor received 5 patents in the field of shoemaking?

A). Elijah McCoy
B). Jan Ernst Matzeliger
C). Ernest Just
D). Lewis Latimer
Answer : Option B

Explanation :

Matzeliger never benefited financially from his inventions. He died in 1889 at the age of 37 from tuberculosis.

Question 32 :

It travels over land and water. Who invented the HOVERCRAFT?

A). S. Sperrow
B). O. Stricheg
C). T. Henman
D). C. Cockerell
Answer : Option D

Explanation :

Christopher Cockerell invented the hovercraft in 1956. His early experiments with the idea involved a cat food tin, a coffee tin and an industrial blower.

Question 33 :

In which decade was the AEEE (now the IEEE) founded?

A). 1850s
B). 1880s
C). 1930s
D). 1950s
Answer : Option B

Explanation :

The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).

Question 34 :

What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent?

A). Telephone
B). Early Warning
C). Electricity
D). Television
Answer : Option D

Explanation :

All of the inventors mentioned invented an early mechanical television system.

Question 35 :

What Sir Isaac Newton invented?

A). Reflecting telescope
B). Chronometer
C). Microscope
D). Spectacles
Answer : Option A

Explanation :

Invented in 1668.