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