#1
What is the formula to calculate electrical power?
Power = Voltage * Current
ExplanationPower is the product of voltage and current.
#2
What is the purpose of a fuse in an electrical circuit?
To protect against overcurrent
ExplanationFuses safeguard circuits by breaking the flow of current in case of excess.
#3
In a series circuit, what happens to the total resistance as more resistors are added?
It increases
ExplanationTotal resistance rises as more resistors are added in series.
#4
What is the standard voltage level for most household electrical systems in the United States?
120 volts
ExplanationIn the US, standard household voltage is 120 volts.
#5
What is the unit of measurement for electrical current?
Ampere (A)
ExplanationThe unit for measuring electrical current is Ampere (A).
#6
Which type of electrical circuit has multiple paths for current to flow?
Parallel circuit
ExplanationParallel circuits offer multiple routes for current flow.
#7
What is the unit of electrical resistance?
Ohm (Ω)
ExplanationOhm (Ω) is the unit for measuring electrical resistance.
#8
What is the purpose of a circuit breaker?
To protect against overcurrent
ExplanationCircuit breakers halt excessive current flow to prevent damage.
#9
What is the purpose of a transformer in an electrical system?
To regulate voltage
ExplanationTransformers adjust voltage levels in electrical systems.
#10
What is the primary function of a ground fault circuit interrupter (GFCI)?
To protect against ground faults
ExplanationGFCIs shield against electric shock by detecting ground faults.
#11
What is the purpose of a surge protector in an electrical system?
To protect against voltage spikes
ExplanationSurge protectors shield devices from sudden voltage spikes.
#12
What is the purpose of a diode in an electrical circuit?
To control current direction
ExplanationDiodes regulate the direction of current flow.
#13
What does the term 'kVA' stand for in electrical engineering?
Kilowatt-Ampere
Explanation'kVA' denotes Kilowatt-Ampere, a measure of apparent power.
#14
What is the purpose of a rectifier in an electrical circuit?
To convert AC to DC
ExplanationRectifiers convert alternating current (AC) to direct current (DC).
#15
What is the function of an inductor in an electrical circuit?
To store electrical energy
ExplanationInductors store energy in magnetic fields in electrical circuits.
#16
What is the purpose of a surge arrester in an electrical system?
To protect against voltage spikes
ExplanationSurge arresters safeguard against sudden increases in voltage.
#17
What does the term 'RMS' stand for in electrical engineering?
Root Mean Square
Explanation'RMS' denotes Root Mean Square, a measure of AC voltage.
#18
What is the purpose of a shunt resistor in an ammeter?
To measure current
ExplanationShunt resistors enable ammeters to measure current flow.