CTS Exam - AV Math
WITH CORRECT
ANSWERS
Aspect Ratio - CORRECT ANSWER-The ratio of width to height in a screen or other
output device. W/H
Throw Distance - CORRECT ANSWER-The distance from a projector to a focusing
surface or screen. = Screen Width * Throw Ratio
Image Height Formula - CORRECT ANSWER-SH = D / SL SL = 4, 6, or 8
ex. D = 480inches
SL = 8
SH = = 60in high
Farthest Viewer By Text Height - CORRECT ANSWER-D = TH * 150
Impedance - CORRECT ANSWER-Total opposition to current flow.
Parallel Circuit Impedance Formula (Same Impedance) - CORRECT ANSWER-ZT = Z /
N
Z = impedance
N = quantity of loudspeakers
Parallel Circuit Impedance Formula (Different Impedance) - CORRECT ANSWER-ZT =
1/(1/Z1 + 1/Z2 + 1/Z3....1/ZN)
Series Circuit Impedance Formula - CORRECT ANSWER-ZT = Z1 + Z2 + Z3 ... ZN
WITH CORRECT
ANSWERS
Aspect Ratio - CORRECT ANSWER-The ratio of width to height in a screen or other
output device. W/H
Throw Distance - CORRECT ANSWER-The distance from a projector to a focusing
surface or screen. = Screen Width * Throw Ratio
Image Height Formula - CORRECT ANSWER-SH = D / SL SL = 4, 6, or 8
ex. D = 480inches
SL = 8
SH = = 60in high
Farthest Viewer By Text Height - CORRECT ANSWER-D = TH * 150
Impedance - CORRECT ANSWER-Total opposition to current flow.
Parallel Circuit Impedance Formula (Same Impedance) - CORRECT ANSWER-ZT = Z /
N
Z = impedance
N = quantity of loudspeakers
Parallel Circuit Impedance Formula (Different Impedance) - CORRECT ANSWER-ZT =
1/(1/Z1 + 1/Z2 + 1/Z3....1/ZN)
Series Circuit Impedance Formula - CORRECT ANSWER-ZT = Z1 + Z2 + Z3 ... ZN
