ATP Exam Study Guide Questions and Answers | Latest Update | 2024/2025 | Rated A+

ATP Exam Study Guide Questions and Answers | Latest Update | 2024/2025 | Rated A+ **What frequency range does pure tone audiometry cover?** It ranges from 0.125 to 8 kHz. **Define EADL.** EADL stands for electronic aids to daily living. **What is the primary mode of transmission used by an EADL to control distant devices like garage door openers?** The primary mode is Radio Frequency Transmission. **Explain radio frequency transmission.** It acts as a communication link between the EADL and appliances. **What are the advantages and disadvantages of radio frequency transmission?** Advantages include the ability to transmit signals throughout a house and yard without being blocked by common household materials. Disadvantages include potential interference and lack of privacy. **Define house wiring in the context of EADLs.** House wiring involves digital control signals sent from the EADL through household wiring to appliances. **What are the pros and cons of house wiring for EADLs?** Pros include no installation cost for additional wiring. Cons include lack of portability and possible interference among systems on the same electrical power network. **Describe ultrasonic transmission.** It utilizes sound waves around 40,000 Hz, inaudible to humans, to transmit signals from a receiver to a transmitter. **What are the advantages and disadvantages of ultrasonic transmission?** Advantages include high portability. Disadvantages include the requirement for transmitter and receiver to be in the same room without obstruction. **Explain infrared transmission.** Infrared transmission is commonly used to control home electronics like TVs and music players, and also links EADLs with appliances. **What are the pros and cons of infrared transmission?** Pros include low cost and portability. Cons include the need for direct line of sight between transmitter and receiver, susceptibility to interference,