Ohm's Law states which of the following? A) Voltage is proportional to current and inversely proportional to resistance. B) Voltage is proportional to current and resistance. C) Voltage is inversely proportional to current and resistance.
Ohm's Law states which of the following? A) Voltage is proportional to current and inversely proportional to resistance. B) Voltage is proportional to current and resistance. C) Voltage is inversely proportional to current and resistance.
Kirchhoff s first law states which of the following? A) Resistances of each leg of a junction are equal. B) The sum of the voltages at a junction is equal to zero. C) The sum of the currents at a junction is zero.
Extra-low voltage systems are defined as which of the following? A) Less than or equal to 24 volts. B) Less than or equal to 36 volts. C) Less than or equal to 50 volts.
To prevent destruction the event of a short circuit, protective devices (fuses or circuit breakers) must have an interrupting capacity conforming to which of the following? A) 1.5 x the calculated short circuit current. B) 30 times the rated ampacity of the device. C) Greater than the calculated short circuit current.
What is "connected load"?
A) Loads that are expected to be in use at one time. B) Sum of all electrical loads connected to the system, on or off. C) Loads that are plugged in, excluding hardwiredilevices.
Authoritative rules for electrical design and installation are contained in which of the following documents? A) ASHRAE Handbook of Fundamentals. B) NFPA 101. C) NEC.
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