CA 13 Prelim Examination
- 1.Who built the first transmitter?
- A.
Gugliermo Marcone
- B.
Nick Thomson
- C.
Edwin H. Armstrong
- D.
Heinrich Rudolf Hertz
- E.
Thomas Thompson
- F.
Nicholas Tesxas
- G.
None of the above
- 2.Who invented the first FM Radio?
- A.
Gugliermo Marcone
- B.
Nikola Tesla
- C.
Edwin H. Armstrong
- D.
James Clerk Maxwell
- E.
Thomas Thompson
- F.
Heinrich Rudolf Hertz
- G.
None of the above
- 3.He showed mathematical solution that electromagnetic waves could propagate through space.
- A.
Edwin H. Armstrong
- B.
James Clerk Maxwell
- C.
Heinrich Rudolf Hertz
- D.
Gugliermo Marcone
- E.
Gregore Horthman
- F.
Thomas Thompson
- G.
None of the above
- 4.He demonstrated Maxwell theory of detecting electro-radiation.
- A.
Nick Thomson
- B.
Edwin H. Armstrong
- C.
Heinrich Rudolf Hertz
- D.
James Clerk Maxwell
- E.
Gregore Horthman
- F.
Thomas Edison
- G.
None of the above
- 5.What is the first known Communication Radio Set?
- A.
Radio Spectrum Ultra-magnetic Communication Set
- B.
Spark Radio
- C.
Spark Ultra Spectrum Set
- D.
Space-wave Communication Set
- E.
Spark Gap transmitter
- F.
Crystal Set
- G.
None of the above
- 6.What date FM Radio invented?
- A.
1873
- B.
1963
- C.
1933
- D.
1888
- E.
1873
- F.
1896
- G.
None of the above
- 7.When was the first transmitter invented?
- A.
1888
- B.
1896
- C.
1856
- D.
1863
- E.
1872
- F.
1869
- G.
None of the above
- 8.It is a theory explains that electro-radiation could be able to detect by means of a transmitter.
- A.
Theory of electro-radiation
- B.
Law of electro-dynamism
- C.
Theory of electromagnetism
- D.
Law of electromagnetism
- E.
Theory of electro-modulation
- F.
Law of electro-modulation
- G.
None of the above
- 9.It is the first commercially intended radio transmitter.
- A.
Crystal spectrum DSI
- B.
Crystal DSI Set
- C.
Spark Gap transmitter
- D.
Crystal Magnetism DIF
- E.
Crystal Set
- F.
Crystal Gap DSI
- G.
All of the above
- 10.It is a receiver that contains only a detector.
- A.
AM electrical DSI
- B.
FM Reciprocal DSI
- C.
AM receiver
- D.
FM receiver
- E.
AM transmitter
- F.
FM Transmitter
- G.
None of the above
- 11.Nikola Tesla demonstrated Maxwell’s mathematical findings to demonstrate that sending and receiving a radio frequency. He proposed the method of sending and receiving can be used as the same medium of sending and receiving information.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 12.According to Maxwell sound waves could propagate through space.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 13.The first transmitter was capable to 1- 1 and half mile.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 14.Light emitting-diode was used by Gugliermo Marcono in creating the first transmitter.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 15.Oscillators, RF Amplifier and modulator are the primary components of a FM transmitter.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 16.Spark Gap Transmitter was not released commercially because it is prone to spark. It was tested that this transmitter may produced or creates electrical sparks that could cause fire.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 17.AM stands for Amplitude Modulator.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 18.Edwin Howartz Armstrong invented FM Radio.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 19.All statements above are related and connected to the theory of electromagnetism by James Clairk Maxwell.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 20.The Limiter discriminates the radio waves (intelligent) upon entering the FM receiver.
- A.
TRUE
- B.
FALSE
- C.
NEVERMIND
- 21.
Identify this radio waveform. - 22.
Identify this radio waveform.
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