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ILE Exam Hearing Aids(Correctly Answered)2026
Hand Cupped Behind Ear >>-first Hearing Aid
-increased sound by 5-8db
-included horns,trumpets, speaking tubes
1892 >>-carbon amplifiers patent by Alexander Bell
-marketed 1902-1903 until 1930;first patent for a telephone type hearing instrument
1920 >>large vacuum tubes; not portable
1938 >>miniature vacuum tube ;crystal receivers
1930 >>diameter reduced
1940 >>bone conduction receivers were introduced
1946 >>first telecoil introduced
1950 >>bodyworn HA became convenient size
1948 >>transistor invented
1954 >>eyeglasses aids introduced
1974 >>microphones electrets were introduced
1964 >>intergrated circuit(transistors, resistors, wiring...)
1952 >>first transistors
The Most Important function of the oval window is to : >>transfer vibration from the
ossicular chain
Hair Cells a rise from the layer on top of the : >>organ of corti
The theory of hearing that is considered the most accurate is : >>Place Theory, Volley
Theory, Temporal Theory
The Three semicircular canals are: >>1)90degress angle to one another
2)superior,posterior, and lateral
3)detectors of rotational movement in any direction
The average length of an uncoiled basilar membrane is >>35mm
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