Ultrasonics quiz
Authored by A.Lesly Fathima
Physics
University
Used 34+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The instrument directly calibrated to show the depth of the sea is called
Odometer
Fathometer
Lactometer
Barometer
2.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
The word SONAR is derived from
(a)
3.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
-------------- are acoustical waves with frequencies higher than 20 kHz
(a)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Crystal used for generating ultrasonic waves is
quartz
NaCl
KCl
Nickel
5.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
The reflected signal is known as
(a)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The distance of the sea can be calculated using the formula
7.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
Which method is used to detect submerged submarines?
(a)
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