Inventions Which of the following was first patented by an Australian in 1889? Electric Fence Electric Heater Electric Shaver Electric Drill Electric Fence Electric Heater Electric Shaver Electric Drill ANSWER DOWNLOAD EXAMIANS APP
Inventions The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project? Vannevar Bush Leslie R. Groves James B. Conant Robert Oppenheimer Vannevar Bush Leslie R. Groves James B. Conant Robert Oppenheimer ANSWER DOWNLOAD EXAMIANS APP
Inventions What Sir Isaac Newton invented? Microscope Spectacles Chronometer Reflecting telescope Microscope Spectacles Chronometer Reflecting telescope ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Electric Generator? Michael Faraday Alfred B. Nobel Sir Alexander Graham Bell Thomas Alva Edison Michael Faraday Alfred B. Nobel Sir Alexander Graham Bell Thomas Alva Edison ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1890s 1880s 1800s 1900s 1890s 1880s 1800s 1900s ANSWER DOWNLOAD EXAMIANS APP
Inventions In which year was MIDI introduced? 1977 1983 1973 1987 1977 1983 1973 1987 ANSWER DOWNLOAD EXAMIANS APP
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