Entertainment Technician Certification Program (ETCP) Electrical Practice Exam

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• An Opto-Splitter can protect a lighting system from which potential issue?
• What should you locate to assure a successful load-in for an incoming road board requiring 300A of 3-phase power?
• What are the common forms of Lockout/Tagout?
• Which statement describes the significance of electrical insulation in installations?
• What is the key feature of SCR/Triac dimmer technology?
• What does 'intermittent' refer to in electrical systems?
• In the context of lightning safety, what is the recommended wait time after the last lightning strike before resuming outdoor activities?
• Which of the following is NOT a formula for Power Factor?
• What are DMX to Ethernet/Ethernet to DMX connectors commonly known as?
• What is the main function of Remote Device Management (RMD)?
• How is electricity distributed in a typical venue?
• What is a key safety practice when working with electrical systems?
• Which of the following statements regarding an AED is correct?
• What is the minimum allowable voltage on a 120V branch circuit?
• What does "AC" stand for in electrical terms?
• In Power Factor calculations, what does PF stand for?
• Most chain motors designed for use in North America operate correctly on which voltage?
• Inductive loads generate which type of field?
• Which type of fire extinguisher should be used on electrical fires?
• What does an extension cord primarily extend?
• If fall protection has been used, what must be done with it?
• What role do different breaker types (such as Type B, C, D) serve?
• Which component is primarily affected by voltage drop in electrical circuits?
• What type of dimmer is known as reverse phase?
• At what temperature can an Arc Flash reach?
• What is the formula for calculating power factor?
• What is the primary function of a Bull/Company Switch?
• An isolated ground 120V outlet used in conjunction with an isolation transformer has what sign on its face?
• What type of address is 10.0.0.1?
• How many bits does the DMX-512 protocol utilize?
• What is most likely the reason for branch circuit breakers to be extremely hot when used with a rig of 208V HMI fixtures?
• What is the maximum allowable cable length for a DMX cable?
• For creating a low hanging fog effect, what material should a technician use?
• What is the best material for temporarily hanging 15 luminaires?
• What is the first step in servicing a chain motor?
• Which of the following must be included on Lock-out Devices?
• In terms of electrical safety, what does a Type C extinguisher indicate?
• In a 3-phase electrical system, what does 120/208 volts typically refer to?
• What does "Voltage" measure?
• What does VRMS represent in electrical terms?
• What is the maximum total allowable voltage drop on both feeder and branch circuits?
• What is an advantage of using heat shrink tubing compared to electrical tape?
• What is the possible sound pressure during an Arc Blast?
• What does a digital multimeter typically measure?
• What potential issues can arise from poor electrical grounding?
• When assessing a circuit, what does an effective measurement of insulation indicate?
• Why is it essential to have a qualified electrician perform electrical installations?
• What does the K-Factor measure in transformers?
• What does lost power in a circuit relate to when considering the current flowing through it?
• In an electrical system, what does a resistive load primarily generate?
• Which of the following is a safety hazard related to stray voltage?
• What does the term "conduit" refer to in electrical installations?
• What does the term "load balancing" refer to in electrical systems?
• What is the primary purpose of an electrical circuit?
• What should be done if you hear thunder within 30 seconds of a lightning strike?
• What is the key purpose of a Residual Current Device (RCD)?
• In the context of electric circuits, what does 'power' fundamentally represent?
• What occurs when an AED unit detects a heartbeat?
• What is one common hazard when working with electrical systems?
• What is the formula for calculating Three Phase kVA?
• How can testing for voltage be safely performed?
• What does the term "neutrals" refer to in electrical practices?
• What is the function of a fuse in an electrical circuit?
• Which type of tool is most appropriate for measuring electrical current?
• What does the term '4-wire dimming' generally refer to?
• What is the power factor when the phase angle is 90 degrees?
• What does the acronym P.O.E. stand for?
• What indicates a short circuit?
• If a follow spot puts out 100fc at 200 ft with a 40ft beam size, what is the beam size and foot candles at 100 ft?
• What is the relationship between real power and apparent power used to determine power factor?
• Which type of load is most likely to create harmonic distortion?
• Capacitive loads create which type of field?
• What type of hard hat is recommended near high voltage live work?
• If the voltage is halved at the same resistance, what happens to the current?
• What is the best way to describe the path electricity takes to return to its source?
• What is required to safely work on electrical equipment?
• What is the primary purpose of a GFCI outlet?
• How much DC voltage does Power over Ethernet (P.O.E.) allow over two unused wires?
• What is the primary concern with using inductors?
• How do single-phase and three-phase power systems differ?
• What is the first action an electrician should take when working with single purchase counter-weight battens?
• What is the characteristic impedance of a DMX cable?
• What safety devices are commonly found in electrical panels?
• What is the best reason to power up a large rig in sections?
• What does the term "ampacity" refer to?
• For a Chain Motor identified as a linear load, what characteristic does it exhibit?
• What is the formula for calculating RMS voltage?
• Which device is used to measure electrical current?
• What is the most practical troubleshooting step when two LED fixtures are operating in unison but are supposed to be controlled separately?
• What type of load experiences a lag in current relative to voltage?
• If the resistance is constant, how will doubling the voltage affect the current drawn?
• What should be done first when troubleshooting an electrical system?
• What does RMD stand for?
• What is the primary effect of a cold filament in an electrical circuit?
• What type of loss is indicated by the expression [I squared]R?
• How is Power (Watts) calculated?
• What is the guideline known as for lightning safety?
• Which of the following represents the relationship between voltage (V), current (I), and resistance (R)?
• What does HRC stand for in electrical terms?
• What is described by the term "grounding" in electrical work?
• What role does a dimmer switch play in lighting control?
• What does "Watt" measure?
• What is "phase rotation"?
• Why is cable management important in lighting design?
• What does effective cable management contribute to in a lighting design?
• What is the primary purpose of using heat shrink tubing in electrical connections?
• When metering the load side of a transformer supplying 120/208v 3-phase, what is the minimum category meter to be used?
• What does the 25 foot Tap Rule pertain to?
• What is the most common service found at a Company switch in North America?
• What is the primary purpose of a meg-ohm meter, commonly referred to as a megger?
• Define "load" in an electrical context.
• What is the function of an electrical fuse?
• Identify a key characteristic of LED lighting in the entertainment industry.
• What is the formula for calculating Single Phase kVA?
• What is the maximum allowable voltage drop on feeders or branch circuits?
• What does "EH" stand for in electrical hazard footwear ratings?
• What is the primary function of a software patch in electrical control systems?
• What is one purpose of a voltage drop calculation in electrical systems?
• What characteristic do capacitive loads exhibit?
• Which instrument is primarily used for measuring electrical loads?
• What do circuit diagrams represent?
• How can power be calculated in an electrical circuit?
• What does the abbreviation "ETL" signify in the context of electrical equipment?
• What is the maximum length for Ethernet cable runs?
• What aspect is a concern for OSHA/OHSA compliance for the entertainment electrician?
• What does the unit "ohm" measure in an electrical context?
• If two control devices are connected on an Ethernet switch but cannot communicate, what is the likely issue?
• What is the typical function of a relay in electrical systems?
• Hots can also be referred to as which of the following?
• What is the term used for voltage multiplied by current?
• Which tool is crucial for checking the voltage output of electrical circuits safely?
• Why is a non-melting headliner important in hard hats used near high voltage?
• What is the purpose of a safety switch?
• What is the correct connection method for returning fault current to the source?
• What is a primary benefit of using circuit breakers in electrical panels?
• What is the use of electrical load calculations?
• What does the term 'ampacity' refer to?
• Which personal equipment is essential when working on 240v equipment where the available fault current is unknown?
• What formula represents RMS voltage?
• Lost power in a circuit is proportional to which of the following?
• What is the power factor when the phase angle is 0 degrees?
• Which type of load has a resistance that remains unchanged with varying voltage?
• If a 3-phase motor is running incorrectly in reverse rotation, what should you do?
• What is the maximum percentage of phase current that can be found through the neutral?
• What does "wire gauge" indicate?
• Why is regular inspection and maintenance of electrical equipment crucial?
• What type of loads generally create electromagnetic fields?
• What type of environment does a portable generator typically serve best?
• What does the 120/240V electrical system commonly indicate in the US?
• How can you identify the phase of electrical supply?
• What is the purpose of a lock-out/tag-out procedure?
• What is a common definition of Power?
• What type of dimmer is classified as forward phase?
• In capacitive loads, the current ________ the voltage.
• What is the function of a circuit breaker in electrical systems?
• Which connector is commonly used in entertainment lighting?
• Which of the following is true about conventional dimmers?
• To assemble a Cat 5 data cable, which tool is essential?
• What is a common application for a high K-rated transformer?
• What does MBJ/SBJ stand for?
• In resistive loads, the current is ________ with the voltage.
• Why is it important to label electrical circuits?
• Which value indicates the phase relationship between voltage and current in a circuit?
• What color is typically used for ground wires?
• How much pressure can be created by an Arc Blast?
• Which statement describes the operation of an IGBT dimmer?
• What is the formula for calculating 3-phase AC power per leg?
• Which of the following is a common method to prevent electrical shock?
• What is the primary function of dimmers in entertainment technology?
• Which type of electrical circuit is commonly used in entertainment applications?
• What is the function of a circuit breaker?
• What is the formula to calculate cable length based on variables A, B, and C?
• Where is the best location to ground a portable power generator providing supplementary power to a building for a show?
• What does the term "Slot to channel" best describe?
• When handling live electrical equipment, which of the following is critical?
• What is the correct formula associated with calculating apparent power?
• LEDs are typically characterized as what type of electrical load?
• What is the significance of the value 1.732 in electrical formulas?
• What does RCD stand for in electrical safety?
• Why might a chain motor experience issues with a longer cable run?
• In an inductive load, the current ________ the voltage.
• How much does copper expand when vaporized in an Arc Flash?
• What is the primary use of portable generators in entertainment?
• How is peak voltage calculated?
• What type of cable must be twisted pair, low capacitance, and have 120-ohm characteristic impedance?
• What is the function of a transformer in electrical systems?
• What is a characteristic of a capacitive load?
• What is the transmission speed of DMX-512?
• What is the primary purpose of a distribution box in entertainment applications?
• Which footwear is appropriate when working with high voltage?
• What is the safest way to proceed when installing tails at a Company panel?
• What is the relationship between lost power and resistance in a circuit?
• What is the average value of a fully rectified sinewave expressed as a percentage of its peak?
• What is the purpose of using a Multimeter?
• In dip switch settings, which value corresponds to the second position?
• What type of load does a Power Factor of 1 represent?
• What is the term for the NEC rule allowing an over-current device to be located 25 feet after a change in cable size?
• What is considered the best diagnostic tool for working with SCR dimmer systems?
• When should you use a lockout/tagout system?
• What is the formula for calculating Vpeak?
• What is the best method for definitively determining the ampacity of a power panel?
• According to the NEC code, what is the code for stage electrical setups?
• Under what conditions is live work permitted according to NFPA 70E?
• Which of the following is essential for ensuring safety around electrical equipment?
• An inductor can be compared to what water-related object?
• What is the importance of High Rupture Capacity fuses (HRC)?
• What characterizes an active load in electrical terms?
• How can power factor affect electrical efficiency?
• Which NEC code applies to carnivals?
• What does compliance with electrical codes ensure?
• What is the best way to deal with a non-sinusoidal load?
• What is the term for the loss of power due to resistance in electrical systems?
• What type of load is a Chain Motor classified as?
• Which of the following is NOT a common type of dimming?
• In electrical terms, lost power is directly proportional to which of the following components?
• If a lighting designer asks you to "Flag" a light, what should you do?
• At what speed can molten metal and shrapnel be ejected during an Arc Blast?
• On a twist lock connector, what part connects first when mating?
• What does a surge protector do?
• What is the maximum number of units allowed on a multi-point bus (daisy chain)?
• What is "stray voltage"?
• How many dimmers can DMX control per universe?
• What is the significance of the National Electrical Code (NEC)?
• What is the single phase AC power formula?