A) Telegraphone B) Wiregraph C) Phonograph D) Radiophone
A) Stockholm B) Paris C) Vienna D) Copenhagen
A) Engineer B) Inventor C) University professor D) Supreme Court judge
A) Technical University of Denmark B) University of Copenhagen C) University of Paris D) Royal Institute of Technology
A) Poulsen arc B) Crystal radio C) Spark-gap transmitter D) Vacuum-tube transmitter
A) Rebekka Magdalene B) Jonas Nicolai C) Franz Josef D) Peder Oluf Pedersen
A) World's Fair in Chicago B) Copenhagen Technical Exhibition C) Exposition Universelle in Paris D) International Radio Conference
A) Emperor Franz Josef of Austria B) The President of France C) The King of Denmark D) Peder Oluf Pedersen
A) Too much competition B) Lack of electronic amplification C) Poor sound quality D) The invention was illegal
A) 1869 B) 1900 C) 1942 D) 1898
A) 1907 B) 1910 C) 1903 D) 1908
A) Lee de Forest B) Einar Dessau C) William Duddell D) Ernst Alexanderson
A) Hydrogen B) Oxygen C) Nitrogen D) Helium
A) Static gravitational field B) Transverse magnetic field C) Longitudinal electric field D) Variable thermal field
A) Vacuum tubes B) Chemical batteries C) Spark-gap transmitters D) Mechanical switches
A) Ejerg and Lyngby B) Lyngby and Newcastle C) Los Angeles and San Francisco D) Berlin and Copenhagen
A) 145 miles B) 100 miles C) 215 miles D) 295 miles
A) 5 kilowatts B) 12 kilowatts C) 3 kilowatts D) 100 kilowatts
A) General Electric B) Western Union C) Federal Telegraph Company D) Marconi Company
A) Pulse code modulation B) Digital encryption C) Amplitude modulation D) Frequency hopping
A) Ernst Alexanderson B) William Duddell C) Lee de Forest D) Einar Dessau
A) Alexanderson alternator B) Spark-gap generator C) Arc transmitter D) Audion tube
A) Late 1900s B) Mid 1930s C) Early 1950s D) Early 1920s
A) Shortwave transmitters B) Alexanderson alternators C) Spark-gap systems D) Singing arcs
A) 1907 B) 1923 C) 1894 D) 1942
A) 1907 B) 1923 C) 1942 D) 1921
A) Christian Henrik Otto B) Peder Severin Krøyer C) Frederikke Marie Rasmussen D) Asta Stoltz Nielsen
A) Engineer B) Geologist C) Artist D) Physicist
A) Copenhagen B) Frederiksborg C) Leipzig D) Gentofte
A) 1939 B) 1993 C) 1942 D) 1969
A) Gentofte Cemetery B) Landemærket 3 C) Frederiksborg Castle D) Leipzig University
A) Swedish Institute for Engineering Research B) Danish government C) Danish Academy of Technical Sciences D) Royal Danish Society for Science
A) 10 December B) 23 November C) 1 January D) 6 August
A) 1942 B) 1969 C) 1907 D) 1939
A) 2018 B) 1993 C) 1939 D) 1942
A) Frederiksborg Castle B) University of Leipzig C) Gentofte Cemetery D) Landemærket 3
A) Poulsen's wedding B) Poulsen's birthplace C) The location of his laboratory D) Poulsen's burial site
A) 1969 B) 1043 C) 1904 D) 1942
A) 50th anniversary B) 149th anniversary C) Centennial D) 150th anniversary
A) 1969 B) 1907 C) 2018 D) 1942
A) 23 November 2018 B) 23 November 1939 C) 1 January 1969 D) 6 August 1942 |