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Author Question: The particle size produced by an ultrasonic nebulizer depends mainly on which of the following? ... (Read 60 times)

BRWH

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on: Jul 16, 2018
The particle size produced by an ultrasonic nebulizer depends mainly on which of the following?
 
  a. Blower (fan) speed
  b. Signal amplitude
  c. Signal frequency
  d. Chamber baffling

Question 2

Which of the following mean mass aerodynamic diameter (MMAD) aerosol suspensions is pro-duced by an ultrasonic nebulizer operated at 1.25 MHz?
 
  a. 1 to 2 m
  b. 6 to 10 m
  c. 4 to 6 m
  d. Less than 1 m


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kaylee05

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
The frequency at which the crystal vibrates, preset by the manufacturer, determines aerosol parti-cle size.

Answer to Question 2

ANS: C
A nebulizer operating at 1.25 MHz produces an aerosol with an MMAD of between 4 and 6 m.


BRWH

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Reply 2 on: Jul 16, 2018
Gracias!

isabelt_18

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Reply 3 on: Yesterday
Excellent

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