LEP Final Exam questions well
answered graded A+
What are the three main parts of an earth grounding system? - ANS ✔✔Earth Grounding
Electrodes
Grounding Conductors
Bonding Location
What is "balanced" about a balanced interface? - ANS ✔✔Signals are sent down 2 cables rather
than 1. Balancing the effect of any interface.
What is "Common Impedance Coupling" - ANS ✔✔The mechanism by which ground currents
cause noise in unbalanced signals.
Why is important to balance loads? - ANS ✔✔To minimize the amount of voltage returned on
the neutral lines. (Cancel neutral currents)
What is the difference between Shunt Mode and Series Mode surge protection? - ANS
✔✔Shunt: Directs voltage elsewhere
Series: Uses capacitors to suppress errant voltage
What is the color code for 3-phase power in the United States? - ANS ✔✔Green: Ground
White: Neutral
Red, Black, Blue: Hot legs
What does a Hi-Pass Filter do? - ANS ✔✔Allows frequencies above the filter settings through,
blocks all lower frequencies
, What is one Advantage of using isolation boxes on stage? - ANS ✔✔Minimize System Noise
What is another name for downstage when referring to where monitors and vocal mic positions
are located? - ANS ✔✔Frontline
What is the role of the stage tech on the audio crew? - ANS ✔✔Assist FOH & Monitor engineers
What is the 80% rule? - ANS ✔✔Never use more than 80% of the available power on a circuit
What is the importance of having cue sheets? - ANS ✔✔So you know the cue timing and can
consistently reproduce the show form performance to performance
What VectorWorks palette allows you to change the properties of a object? - ANS ✔✔Object
Info
Why would you use a focus chart? - ANS ✔✔To restore the original focus of a show
Why should you limit the color palette you use for a show? - ANS ✔✔To keep the show looking
consistent. To reduce creating white spots combining colors.
In a standard Socapex connector, wired for 120v with a 3 phase power supply, how many volts
should out meter read between pins 1 & 3? - ANS ✔✔180v
What size breaker is found on a 2.4 Kw dimmer? - ANS ✔✔20 Amp
An automated lighting console uses ____ to determine the DMX output values from the console
when more than one cue is being played back. - ANS ✔✔LTP. Latest takes priority.
answered graded A+
What are the three main parts of an earth grounding system? - ANS ✔✔Earth Grounding
Electrodes
Grounding Conductors
Bonding Location
What is "balanced" about a balanced interface? - ANS ✔✔Signals are sent down 2 cables rather
than 1. Balancing the effect of any interface.
What is "Common Impedance Coupling" - ANS ✔✔The mechanism by which ground currents
cause noise in unbalanced signals.
Why is important to balance loads? - ANS ✔✔To minimize the amount of voltage returned on
the neutral lines. (Cancel neutral currents)
What is the difference between Shunt Mode and Series Mode surge protection? - ANS
✔✔Shunt: Directs voltage elsewhere
Series: Uses capacitors to suppress errant voltage
What is the color code for 3-phase power in the United States? - ANS ✔✔Green: Ground
White: Neutral
Red, Black, Blue: Hot legs
What does a Hi-Pass Filter do? - ANS ✔✔Allows frequencies above the filter settings through,
blocks all lower frequencies
, What is one Advantage of using isolation boxes on stage? - ANS ✔✔Minimize System Noise
What is another name for downstage when referring to where monitors and vocal mic positions
are located? - ANS ✔✔Frontline
What is the role of the stage tech on the audio crew? - ANS ✔✔Assist FOH & Monitor engineers
What is the 80% rule? - ANS ✔✔Never use more than 80% of the available power on a circuit
What is the importance of having cue sheets? - ANS ✔✔So you know the cue timing and can
consistently reproduce the show form performance to performance
What VectorWorks palette allows you to change the properties of a object? - ANS ✔✔Object
Info
Why would you use a focus chart? - ANS ✔✔To restore the original focus of a show
Why should you limit the color palette you use for a show? - ANS ✔✔To keep the show looking
consistent. To reduce creating white spots combining colors.
In a standard Socapex connector, wired for 120v with a 3 phase power supply, how many volts
should out meter read between pins 1 & 3? - ANS ✔✔180v
What size breaker is found on a 2.4 Kw dimmer? - ANS ✔✔20 Amp
An automated lighting console uses ____ to determine the DMX output values from the console
when more than one cue is being played back. - ANS ✔✔LTP. Latest takes priority.
