( 2025)ETCP Electrical Exam Questions
With Complete Solutions
What must be on Lock-out Devices - ✔️✔️1 - Identity of employee applying device 2 -
the Date the device was applied 3 - a legend that says:"Do Not Energize"
What is the proper footwear when working with high voltage? - ✔️✔️Shoes rated EH
for Electrical Hazard
What type of dimmer is forward phase? - ✔️✔️SCR/ Triac= Silicone Controlled
Rectifier Turns the current on in the middle of the sine wave. Requires choke.
Proportional "on" time to "off" time determines dimming.
Active Load - ✔️✔️A load in which the power consumed doesn't change if the applied
voltage changes.
AED UNIT will.... - ✔️✔️not shock if heartbeat is detected
An Arc Flash Can reach as much as _____________degrees F. - ✔️✔️20,000º
A Bull/Company Switch allows an Electrician to - ✔️✔️Disconnect Power from a
System
A follow spot puts out 100fc @200 ft with a 40ft beam size. What is the beam size and
foot candles at 100' - ✔️✔️20 ft and 400fc (1/2 the size, 4x times the intensity)
A isolated ground 120v outlet, used in conjunction with an isolation transformer has an -
✔️✔️Orange triangle on its face
A Rig of 208V HMI fixtures are on branch circuit breakers from distribution panel. The
breakers are within rated use for the current load but are extremely hot, most likely
from? - ✔️✔️Harmonics
10.0.0.1 is a ______ - ✔️✔️Valid IP address
3-phase AC power per leg formula - ✔️✔️[KVA / V x 1.732]/3
8 LED fixtures are separately controlled by a lighting console but currently units #2 & #7
are operating in unison. What's most practical troubleshooting step? - ✔️✔️Verify that
the DMX address of each unit is unique.
, An incoming road board requires 300A of 3-phase , how best to assure for a successful
load-in? - ✔️✔️Locate a company switch fed by a transformer capable of delivering the
required 300a
An Inductor is to current what a___________ is to water. - ✔️✔️Paddle wheel
An Opto-Splitter can protect a lighting system from_____on the DMX Cable -
✔️✔️Over Voltage
Apprent Power = - ✔️✔️Voltage x Current
At one venue the Chain Motors worked properly with 100' of cable run. At next venue a
cable run was 300' and the motors became intermittent. Why? - ✔️✔️Longer cable run
caused a Voltage drop
At what speed is molten metal, shrapnel, and other material ejected during an Arc
Blast? - ✔️✔️Can exceed 700 mph
Best diagnostic tool for working with SCR dimmer system is a ______ - ✔️✔️True RMS
Digital Meter
Best location to ground a portable power generator providing supplementary power to a
building for a show? - ✔️✔️at house service entry (where power enters building) or
service panel
Cold Filament - ✔️✔️Low Resistance\Large In-Rush Current
Connection that returns fault current to the source - ✔️✔️Make First\Break Last
Copper expands at what rate when vaporized in an Arc Flash? - ✔️✔️67,000X
Dip Switch Settings 1 thru 9 - ✔️✔️1-2-4-8-16-32-64-128-256
DMX "Slot to channel" best describes _______ - ✔️✔️the function of a Soft patch on a
console
DMX cable must be - ✔️✔️Twisted pair, low capacitance, and 120-ohm characteristic
impedance
DMX can control _______ dimmers per universe in ________ steps per device -
✔️✔️512 - 256
DMX to Ethernet/Ethernet to DMX connectors - ✔️✔️Gateway or Protocol converter
With Complete Solutions
What must be on Lock-out Devices - ✔️✔️1 - Identity of employee applying device 2 -
the Date the device was applied 3 - a legend that says:"Do Not Energize"
What is the proper footwear when working with high voltage? - ✔️✔️Shoes rated EH
for Electrical Hazard
What type of dimmer is forward phase? - ✔️✔️SCR/ Triac= Silicone Controlled
Rectifier Turns the current on in the middle of the sine wave. Requires choke.
Proportional "on" time to "off" time determines dimming.
Active Load - ✔️✔️A load in which the power consumed doesn't change if the applied
voltage changes.
AED UNIT will.... - ✔️✔️not shock if heartbeat is detected
An Arc Flash Can reach as much as _____________degrees F. - ✔️✔️20,000º
A Bull/Company Switch allows an Electrician to - ✔️✔️Disconnect Power from a
System
A follow spot puts out 100fc @200 ft with a 40ft beam size. What is the beam size and
foot candles at 100' - ✔️✔️20 ft and 400fc (1/2 the size, 4x times the intensity)
A isolated ground 120v outlet, used in conjunction with an isolation transformer has an -
✔️✔️Orange triangle on its face
A Rig of 208V HMI fixtures are on branch circuit breakers from distribution panel. The
breakers are within rated use for the current load but are extremely hot, most likely
from? - ✔️✔️Harmonics
10.0.0.1 is a ______ - ✔️✔️Valid IP address
3-phase AC power per leg formula - ✔️✔️[KVA / V x 1.732]/3
8 LED fixtures are separately controlled by a lighting console but currently units #2 & #7
are operating in unison. What's most practical troubleshooting step? - ✔️✔️Verify that
the DMX address of each unit is unique.
, An incoming road board requires 300A of 3-phase , how best to assure for a successful
load-in? - ✔️✔️Locate a company switch fed by a transformer capable of delivering the
required 300a
An Inductor is to current what a___________ is to water. - ✔️✔️Paddle wheel
An Opto-Splitter can protect a lighting system from_____on the DMX Cable -
✔️✔️Over Voltage
Apprent Power = - ✔️✔️Voltage x Current
At one venue the Chain Motors worked properly with 100' of cable run. At next venue a
cable run was 300' and the motors became intermittent. Why? - ✔️✔️Longer cable run
caused a Voltage drop
At what speed is molten metal, shrapnel, and other material ejected during an Arc
Blast? - ✔️✔️Can exceed 700 mph
Best diagnostic tool for working with SCR dimmer system is a ______ - ✔️✔️True RMS
Digital Meter
Best location to ground a portable power generator providing supplementary power to a
building for a show? - ✔️✔️at house service entry (where power enters building) or
service panel
Cold Filament - ✔️✔️Low Resistance\Large In-Rush Current
Connection that returns fault current to the source - ✔️✔️Make First\Break Last
Copper expands at what rate when vaporized in an Arc Flash? - ✔️✔️67,000X
Dip Switch Settings 1 thru 9 - ✔️✔️1-2-4-8-16-32-64-128-256
DMX "Slot to channel" best describes _______ - ✔️✔️the function of a Soft patch on a
console
DMX cable must be - ✔️✔️Twisted pair, low capacitance, and 120-ohm characteristic
impedance
DMX can control _______ dimmers per universe in ________ steps per device -
✔️✔️512 - 256
DMX to Ethernet/Ethernet to DMX connectors - ✔️✔️Gateway or Protocol converter
