Basic Electronics NECO past questions and answers

Basic Electronics NECO past questions and answers

Basic electronics questions for you:

What is the primary function of a transistor in a circuit?

A) Amplification or switching (Correct)

B) Energy storage

C) Voltage regulation

D) Current limiting

Which device converts electrical energy into mechanical energy?

A) Motor (Correct)

B) Resistor

C) Capacitor

D) Inductor

What is the unit of measurement for current?

A) Ampere (Correct)

B) Watt

C) Volt

D) Ohm

What does IC stand for in electronics?

A) Integrated Circuit (Correct)

B) Inductive Capacitor

C) Internal Capacitance

D) Insulated Conductor

What component is used to store electrical energy in a magnetic field?

A) Inductor (Correct)

B) Capacitor

C) Resistor

D) Transistor

Which law states that the total current entering a junction must equal the total current leaving the junction?

A) Kirchhoff's Current Law (Correct)

B) Faraday's Law

C) Ohm's Law

D) Boyle's Law

What is the unit of power in electrical systems?

A) Watt (Correct)

B) Ampere-hour

C) Volt-ampere

D) Joule

What component is commonly used to protect circuits from excessive current?

A) Fuse (Correct)

B) Capacitor

C) Diode

D) Inductor

Which device is used to measure electrical resistance?

A) Ohmmeter (Correct)

B) Ammeter

C) Voltmeter

D) Multimeter

What is the primary function of a voltage regulator in a circuit?

A) Maintain a constant voltage output (Correct)

B) Amplify signals

C) Store electrical charge

D) Control current flow

What is the function of an oscillator in electronics?

A) Generates periodic electrical signals (Correct)

B) Regulates voltage

C) Stores energy

D) Controls current flow

What component is used to store a small amount of charge in a circuit?

A) Capacitor (Correct)

B) Resistor

C) Transistor

D) Inductor

What does PWM stand for in electronics?

A) Pulse Width Modulation (Correct)

B) Power Wave Modulation

C) Phase Width Modulation

D) Pulse Wave Manipulation

Which device converts electrical energy into light energy?

A) LED (Correct)

B) Resistor

C) Transistor

D) Capacitor

What is the function of a rectifier in a circuit?

A) Converts AC to DC (Correct)

B) Converts DC to AC

C) Regulates voltage

D) Stores energy

Which law states that the voltage across a closed loop in a circuit is equal to the sum of the applied voltages?

A) Kirchhoff's Voltage Law (Correct)

B) Ohm's Law

C) Faraday's Law

D) Newton's Law

What does the acronym RFID stand for in electronics?

A) Radio-Frequency Identification (Correct)

B) Remote Frequency Identification

C) Rapid Frequency Integration

D) Relay Frequency Identification

What is the primary purpose of a transformer in a circuit?

A) Voltage transformation (Correct)

B) Current regulation

C) Energy storage

D) Capacitance control

Which component is used to store and release electrical energy quickly?

A) Capacitor (Correct)

B) Resistor

C) Diode

D) Inductor

What is the SI unit for capacitance?

A) Farad (Correct)

B) Ohm

C) Ampere

D) Volt