Electrical Flashcards
7 cards from real Ramsay Test practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Electrical flashcards as text
What is the current through a 120-volt circuit with a 60-ohm load?
Answer: 2 amperes
By Ohm's law, I = V/R = 120/60 = 2 amperes.
Capacitance is measured in:
Answer: Farads
Capacitance is measured in farads.
What is the main advantage of higher voltage for power transmission?
Answer: Lower current and reduced line losses
Higher voltage lowers current for the same power, cutting I-squared-R losses.
A normally open relay contact will:
Answer: Close when the coil is energized
A normally open contact closes when the relay coil is energized.
Which law states the sum of currents entering a node equals the sum leaving?
Answer: Kirchhoff's Current Law
Kirchhoff's Current Law states current into a node equals current out.
What is the purpose of a circuit breaker?
Answer: Interrupt current automatically during overload
A breaker automatically opens the circuit on overcurrent and can be reset.
Insulation resistance is best tested with a:
Answer: Megohmmeter
A megohmmeter applies high voltage to measure insulation resistance in megohms.