YÖKDİL Fen Bilimleri Testleri – Okuma Parçası 6

YÖKDİL Fen Bilimleri Testleri - Okuma Parçası 6

Tebrikler - YÖKDİL Fen Bilimleri Testleri - Okuma Parçası 6 adlı sınavı başarıyla tamamladınız. Sizin aldığınız skor %%SCORE%% en yüksek skor %%TOTAL%%. Hakkınızdaki düşüncemiz %%RATING%%
Yanıtlarınız aşağıdaki gibidir.
Soru 1

NASA’s Deep Space Network is responsible for tracking, commanding and receiving data from space probes throughout the solar system. Some of the spacecraft are so far away and they use such small transmitters that radio signals received from them are about 20 million times weaker than a watch battery. To receive such weak signals, the Deep Space Network uses huge dish-shaped antennae up to 70 meters across. To dispatch commands to the most remote spacecraft, the same giant dishes are used to send radio signals from immensely powerful, 400-kilowatt transmitters. The Deep Space Network’s antennae are located at three sites – Madrid (Spain), Canberra (Australia), and California (the US). The sites were chosen because they are roughly 120 degrees and a third of the way round the world from each other. As the Earth turns, at least one of the stations is always in contact with a space probe. This ensures a 24-hour observation, with overlapping time to transfer the radio link to the next station. The sites are also surrounded by mountains, which protect them from radio interference.

It is implied in the passage that ----.

A
the American part of the Deep Space Network is sufficient to track all the probe activity
B
many of the signals from space are lost due to the insufficient size of the receivers that are used
C
the Deep Space Network requires the cooperation of stations located in different countries around the world
D
the Deep Space Network is more effective at receiving than sending signals
E
signals received from space probes are reflected back into space at once
Soru 2

NASA’s Deep Space Network is responsible for tracking, commanding and receiving data from space probes throughout the solar system. Some of the spacecraft are so far away and they use such small transmitters that radio signals received from them are about 20 million times weaker than a watch battery. To receive such weak signals, the Deep Space Network uses huge dish-shaped antennae up to 70 meters across. To dispatch commands to the most remote spacecraft, the same giant dishes are used to send radio signals from immensely powerful, 400-kilowatt transmitters. The Deep Space Network’s antennae are located at three sites – Madrid (Spain), Canberra (Australia), and California (the US). The sites were chosen because they are roughly 120 degrees and a third of the way round the world from each other. As the Earth turns, at least one of the stations is always in contact with a space probe. This ensures a 24-hour observation, with overlapping time to transfer the radio link to the next station. The sites are also surrounded by mountains, which protect them from radio interference.

It can be inferred from the passage that ----.

A
very large antennae are needed not only to send signals into space, but also to receive them
B
current technology cannot keep track of probes 24 hours a day
C
radio signals from the Earth have no effect on the antennae of the Deep Space Network
D
the location of the antennae might be changed for better communication with probes
E
new technology will soon make the Deep Space Network obsolete
Soru 3

NASA’s Deep Space Network is responsible for tracking, commanding and receiving data from space probes throughout the solar system. Some of the spacecraft are so far away and they use such small transmitters that radio signals received from them are about 20 million times weaker than a watch battery. To receive such weak signals, the Deep Space Network uses huge dish-shaped antennae up to 70 meters across. To dispatch commands to the most remote spacecraft, the same giant dishes are used to send radio signals from immensely powerful, 400-kilowatt transmitters. The Deep Space Network’s antennae are located at three sites – Madrid (Spain), Canberra (Australia), and California (the US). The sites were chosen because they are roughly 120 degrees and a third of the way round the world from each other. As the Earth turns, at least one of the stations is always in contact with a space probe. This ensures a 24-hour observation, with overlapping time to transfer the radio link to the next station. The sites are also surrounded by mountains, which protect them from radio interference.

We understand from the passage that the sites of the Deep Space Network were chosen because ----.

A
if the signal from both stations is interrupted, it automatically switches to another
B
these locations can provide a continuous power supply to the 400-kilowatt transmitters
C
their location allows a continuous observation of space probes without interference
D
the locations are on top of mountains that allow for sending and receiving signals easily
E
it is illegal for NASA to build another Deep Space tracking facility in the US
Soru 4

NASA’s Deep Space Network is responsible for tracking, commanding and receiving data from space probes throughout the solar system. Some of the spacecraft are so far away and they use such small transmitters that radio signals received from them are about 20 million times weaker than a watch battery. To receive such weak signals, the Deep Space Network uses huge dish-shaped antennae up to 70 meters across. To dispatch commands to the most remote spacecraft, the same giant dishes are used to send radio signals from immensely powerful, 400-kilowatt transmitters. The Deep Space Network’s antennae are located at three sites – Madrid (Spain), Canberra (Australia), and California (the US). The sites were chosen because they are roughly 120 degrees and a third of the way round the world from each other. As the Earth turns, at least one of the stations is always in contact with a space probe. This ensures a 24-hour observation, with overlapping time to transfer the radio link to the next station. The sites are also surrounded by mountains, which protect them from radio interference.

According to the passage, NASA’s Deep Space Network ----.

A
is only developed enough to send weak radio signals into outer space
B
can stay in contact with space probes even when they send weak signals
C
functions best when receiving data from spacecraft close to the Earth’s atmosphere
D
uses extremely small transmitters to command space probes
E
uses less power than an ordinary watch battery
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