Hearing Aid Dispensers Written Exam
with Complete Solutions
A large perforation of TM can commonly cause how many dB of loss. - ANSWER - 30 dB
What type of loss is favorable to medical treatment. - ANSWER - Conductive
Carhart Notch appearing at 2 KHz. BC test is poorer than the actual sensorineural response in
the low frequencies. Caucasian middle-aged women are most at risk. Worse for pregnant
women, who can experience a rapid decrease in hearing ability: - ANSWER - Otosclerosis
___ is good to find hearing loss. ___ & SRT are within 5 to 10 dB difference. - ANSWER - PTA
Component in input & output compression. - ANSWER - Feedback circuit.
This vent in a non-occluding earmold enhances high frequencies. - ANSWER - Parallel vent.
What is the most common earmold material that has durability & easy modification? - ANSWER
- Silicone 2,000
What tympanogram shows normal middle ear pressure but hypermobility? - ANSWER - Type
Ad.
If the acoustic reflex test shows 5dB, what type of loss should be suspected? - ANSWER - Non-
organic loss.
What type of vent effectively modifies low frequency & In non-occluding earmolds it enhances
high frequency? - ANSWER - Parallel vent.
What is the major function of the earmold? - ANSWER - Acoustic enhancement in the ear canal.
with Complete Solutions
A large perforation of TM can commonly cause how many dB of loss. - ANSWER - 30 dB
What type of loss is favorable to medical treatment. - ANSWER - Conductive
Carhart Notch appearing at 2 KHz. BC test is poorer than the actual sensorineural response in
the low frequencies. Caucasian middle-aged women are most at risk. Worse for pregnant
women, who can experience a rapid decrease in hearing ability: - ANSWER - Otosclerosis
___ is good to find hearing loss. ___ & SRT are within 5 to 10 dB difference. - ANSWER - PTA
Component in input & output compression. - ANSWER - Feedback circuit.
This vent in a non-occluding earmold enhances high frequencies. - ANSWER - Parallel vent.
What is the most common earmold material that has durability & easy modification? - ANSWER
- Silicone 2,000
What tympanogram shows normal middle ear pressure but hypermobility? - ANSWER - Type
Ad.
If the acoustic reflex test shows 5dB, what type of loss should be suspected? - ANSWER - Non-
organic loss.
What type of vent effectively modifies low frequency & In non-occluding earmolds it enhances
high frequency? - ANSWER - Parallel vent.
What is the major function of the earmold? - ANSWER - Acoustic enhancement in the ear canal.
