LEP FINAL EXAM QUESTIONS AND ANSWERS
What are the three main parts of an earth grounding system? - CORRECT ANSWER✅✅Earth Grounding
Electrodes
Grounding Conductors
Bonding Location
What is "balanced" about a balanced interface? - CORRECT ANSWER✅✅Signals are sent down 2 cables
rather than 1. Balancing the effect of any interface.
What is "Common Impedance Coupling" - CORRECT ANSWER✅✅The mechanism by which ground
currents cause noise in unbalanced signals.
Why is important to balance loads? - CORRECT ANSWER✅✅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? - CORRECT
ANSWER✅✅Shunt: Directs voltage elsewhere
Series: Uses capacitors to suppress errant voltage
What is the color code for 3-phase power in the United States? - CORRECT ANSWER✅✅Green: Ground
White: Neutral
Red, Black, Blue: Hot legs
What does a Hi-Pass Filter do? - CORRECT ANSWER✅✅Allows frequencies above the filter settings
through, blocks all lower frequencies
What is one Advantage of using isolation boxes on stage? - CORRECT ANSWER✅✅Minimize System
Noise
What is another name for downstage when referring to where monitors and vocal mic positions are
located? - CORRECT ANSWER✅✅Frontline
, What is the role of the stage tech on the audio crew? - CORRECT ANSWER✅✅Assist FOH & Monitor
engineers
What is the 80% rule? - CORRECT ANSWER✅✅Never use more than 80% of the available power on a
circuit
What is the importance of having cue sheets? - CORRECT ANSWER✅✅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? - CORRECT
ANSWER✅✅Object Info
Why would you use a focus chart? - CORRECT ANSWER✅✅To restore the original focus of a show
Why should you limit the color palette you use for a show? - CORRECT ANSWER✅✅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? - CORRECT ANSWER✅✅180v
What size breaker is found on a 2.4 Kw dimmer? - CORRECT ANSWER✅✅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. - CORRECT ANSWER✅✅LTP. Latest takes priority.
What organization now controls the DMX standard? - CORRECT ANSWER✅✅USITT
A protocol that is used in conjunction with DMX512-A in order to configure, monitor, and manage the
devices on the network is: - CORRECT ANSWER✅✅Remote Device Management
What are the three main parts of an earth grounding system? - CORRECT ANSWER✅✅Earth Grounding
Electrodes
Grounding Conductors
Bonding Location
What is "balanced" about a balanced interface? - CORRECT ANSWER✅✅Signals are sent down 2 cables
rather than 1. Balancing the effect of any interface.
What is "Common Impedance Coupling" - CORRECT ANSWER✅✅The mechanism by which ground
currents cause noise in unbalanced signals.
Why is important to balance loads? - CORRECT ANSWER✅✅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? - CORRECT
ANSWER✅✅Shunt: Directs voltage elsewhere
Series: Uses capacitors to suppress errant voltage
What is the color code for 3-phase power in the United States? - CORRECT ANSWER✅✅Green: Ground
White: Neutral
Red, Black, Blue: Hot legs
What does a Hi-Pass Filter do? - CORRECT ANSWER✅✅Allows frequencies above the filter settings
through, blocks all lower frequencies
What is one Advantage of using isolation boxes on stage? - CORRECT ANSWER✅✅Minimize System
Noise
What is another name for downstage when referring to where monitors and vocal mic positions are
located? - CORRECT ANSWER✅✅Frontline
, What is the role of the stage tech on the audio crew? - CORRECT ANSWER✅✅Assist FOH & Monitor
engineers
What is the 80% rule? - CORRECT ANSWER✅✅Never use more than 80% of the available power on a
circuit
What is the importance of having cue sheets? - CORRECT ANSWER✅✅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? - CORRECT
ANSWER✅✅Object Info
Why would you use a focus chart? - CORRECT ANSWER✅✅To restore the original focus of a show
Why should you limit the color palette you use for a show? - CORRECT ANSWER✅✅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? - CORRECT ANSWER✅✅180v
What size breaker is found on a 2.4 Kw dimmer? - CORRECT ANSWER✅✅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. - CORRECT ANSWER✅✅LTP. Latest takes priority.
What organization now controls the DMX standard? - CORRECT ANSWER✅✅USITT
A protocol that is used in conjunction with DMX512-A in order to configure, monitor, and manage the
devices on the network is: - CORRECT ANSWER✅✅Remote Device Management
