Sound Quiz

Example Questions From the Test

• 2Which microwave sound-and-sign combination means the appliance should be stopped immediately?
  • A steady fan sound while food is heating
  • Sharp crackling accompanied by visible flashes or arcing
  • A single click as a cooking cycle starts
  • A programmed beep when the timer ends
• 3Why can a vibrating phone sound much louder when it is placed on a hollow wooden table?
  • The table increases the phone's vibration frequency
  • The tabletop resonates and moves more air than the phone alone
  • The phone produces more electrical power on wood
  • The hollow space prevents sound from reflecting
• 5What normally creates the repeating swishing sound heard during a dishwasher wash cycle?
  • Water being propelled through rotating spray arms
  • The heating element scraping against the tub
  • The drain pump continuously emptying the machine
  • The door seal repeatedly opening and closing