ETCP Electrical Exam Questions And Answers
Cable Pick Length = A + B - C
Passive Load A load in which the resistance doesn't change if the applied voltage changes.
Active Load A load in which the power consumed doesn't change if the applied voltage
changes.
Servicing Chain Motor Check Voltage to Coil
Meg-ohm meter (commonly called a megger) Device for testing the effectiveness of
insulation
Cold Filament Low Resistance\Large In-Rush Current
Half the Voltage at the same Resistance Draws 1/2 the Current
Power = 1. [VxI] 2. [RxIsquared] 3. [V2/R]
Apprent Power = Voltage x Current
, Dip Switch Settings 1 thru 9 1-2-4-8-16-32-64-128-256
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)
Cable Pick Length = A + B - C
Passive Load A load in which the resistance doesn't change if the applied voltage changes.
Active Load A load in which the power consumed doesn't change if the applied voltage
changes.
Servicing Chain Motor Check Voltage to Coil
Meg-ohm meter (commonly called a megger) Device for testing the effectiveness of
insulation
Cold Filament Low Resistance\Large In-Rush Current
Half the Voltage at the same Resistance Draws 1/2 the Current
Power = 1. [VxI] 2. [RxIsquared] 3. [V2/R]
Apprent Power = Voltage x Current
, Dip Switch Settings 1 thru 9 1-2-4-8-16-32-64-128-256
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)
