ETCP Electrical Exam Questions With
Solutions
Soft Patch Assignment of Dimmers to virtual control channel
DMX-512 is an ___ bit Protocol 8-bit
DMX- 512 Operates at __________ Kbytes per sec DMX@ 250Kbytes Per sec
DMX can control _______ dimmers per universe in ________ steps per device 512 - 256
Maximum Allowable Voltage Drop on Feeders or Branch Circuits 3%
Maximum Total Allowable Voltage Drop non Both Feeder and Branch Circuits 5%
In the case of Capacitive Loads current_______ the Voltage Leads
In the case of Resistive Loads current is_______with the Voltage In phase
In an Inductive Load the current ________ the Voltage Lags
, Power Factor = cos (phase angle between voltage and current)
Power Factor of 1 is a______load Resistive
Single Phase kVA (formula) kVA = [Iphase x Vphase]/1000
Three Phase kVA (formula) kVA = (ILine x VLine x 1.732)/1000
What does an Extension Cord extend? It extends the electrical outlet to the power supply
cord
Power (Watts) = VxI
Power is The rate of doing work
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"
An Opto-Splitter can protect a lighting system from_____on the DMX Cable Over
Voltage
A Bull/Company Switch allows an Electrician to Disconnect Power from a System
Solutions
Soft Patch Assignment of Dimmers to virtual control channel
DMX-512 is an ___ bit Protocol 8-bit
DMX- 512 Operates at __________ Kbytes per sec DMX@ 250Kbytes Per sec
DMX can control _______ dimmers per universe in ________ steps per device 512 - 256
Maximum Allowable Voltage Drop on Feeders or Branch Circuits 3%
Maximum Total Allowable Voltage Drop non Both Feeder and Branch Circuits 5%
In the case of Capacitive Loads current_______ the Voltage Leads
In the case of Resistive Loads current is_______with the Voltage In phase
In an Inductive Load the current ________ the Voltage Lags
, Power Factor = cos (phase angle between voltage and current)
Power Factor of 1 is a______load Resistive
Single Phase kVA (formula) kVA = [Iphase x Vphase]/1000
Three Phase kVA (formula) kVA = (ILine x VLine x 1.732)/1000
What does an Extension Cord extend? It extends the electrical outlet to the power supply
cord
Power (Watts) = VxI
Power is The rate of doing work
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"
An Opto-Splitter can protect a lighting system from_____on the DMX Cable Over
Voltage
A Bull/Company Switch allows an Electrician to Disconnect Power from a System
