When powering a system off, which device from the following list should you turn off first?
Pre-amplifiers
Wireless mic receivers
Blu-ray players
Power amplifiers
Which of the following is a sign of active listening?
Avoiding staring directly at the person speaking to you.
Interrupting frequently to provide the customer with more information.
Nodding to your customer so they know that you understand them.
Wearing mirrored sunglasses so the customer can't see where you're looking.
The best practice for mounting equipment in a rack is to:
Mark RUs beside the mounting rail with a utility knife.
Verify that the holes of the rear mounting rails are 1 inch (2.5 cm) higher than front rails.
Lay the rack on its back on top of padding.
Remove all clip nuts from the mounting rail to secure them to gear first
Which of the following best describes an electret, when used in a microphone?
a preconfigured capacitor
a small battery
prepolarized material
a charged backplate
Raised bumps on the head of a bolt indicate which of the following?
Defect in manufacturing
Length of bolt
Grade of bolt
Size of head
Rear projection is a transmissive system that _____.
requires little space for installation
allows light to pass through a translucent screen toward the viewer
handles ambient light issues more poorly than front screen projection
can allow a presenter to block all or part of the image
The impedance will _____ over the loudspeaker's entire frequency range.
stabilize
not be the same
vary with strength
be exactly the same