Basic Electrical Engineering MCQs (Part-2)

What is the unit of electrical energy?

A Ampere
B Volt
C Joule
D Ohm

What type of current is supplied to homes?

A Direct current (DC)
B Both
C None
D Alternating current (AC)

What is the function of a resistor in a circuit?

A To increase voltage
B To limit current
C To store energy
D To measure power

Which unit is used to measure electrical conductance?

A Ohm
B Ampere
C Siemens
D Watt

What does an inductor store?

A Energy
B Current
C Voltage
D Charge

Which device measures voltage?

A Ammeter
B Ohmmeter
C Voltmeter
D Wattmeter

What is the function of a fuse?

A To prevent overload
B To increase current
C To store energy
D To change voltage

What is the unit of electrical resistance?

A Watt
B Ohm
C Volt
D Ampere

What does the term “electromagnetic induction” describe?

A Current flowing in a conductor
B Energy stored in a capacitor
C Energy conversion in transformers
D Voltage produced by a moving magnetic field

What is the primary cause of energy loss in wires?

A Voltage drop
B Heat dissipation
C Magnetic fields
D Capacitance

Which of these is a non-ohmic conductor?

A Copper wire
B Resistor
C Diode
D Aluminum wire

What type of circuit is used in household electrical wiring?

A Parallel
B Series
C Open
D Short

What is the function of a transformer in an electrical circuit?

A To increase current
B To store energy
C To increase/decrease voltage
D To measure resistance

What is the primary purpose of grounding in electrical systems?

A To measure voltage
B To protect from electric shock
C To store energy
D To increase resistance

Which device is used to store electrical charge?

A Capacitor
B Battery
C Inductor
D Fuse

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