BASIC CONCEPTS OF ELECTRONIC AND ELECTRICAL CIRCUIT

Multiple Choice

Which of the following is a disadvantage of using direct current (DC) for long-distance transmission?

• Excessive voltage drop and power loss

• Ability to step up voltage easily

• Current flows in two directions

• Regular voltage of 220 volts

Multiple Choice

Which of the following is NOT a required component of a simple electric circuit?

• AC/DC Source

• Fuse

• Resistor

• Switch

Multiple Choice

Which symbols represent AC and DC voltage sources in an electric circuit diagram?

• Circle with sine wave for AC, circle with plus/minus for DC

• Square with sine wave for AC, triangle for DC

• Circle with straight line for AC, circle with zigzag for DC

• Triangle for AC, square for DC

Multiple Choice

Which of the following statements about fuses is correct?

• A fuse melts when current is too high, breaking the circuit.

• A fuse increases the current in the circuit.

• A fuse is used to connect wires together.

• A fuse stores electrical energy.

Fill in the Blank

A fuse is used to protect an electrical circuit from the effect of excessive ___.

Multiple Choice

Why electrical wiring usually are covered with a layer of plastic?

• To make it look pretty

• To help electricity flow along the wire

• To make it safe

• To add more energy

Multiple Choice

What would happen if the switch was opened?

• nothing, the light bulbs would still work because there is a complete path
• The light bulbs would not work because the path was broken
• the battery would loose energy
• the wires would be cooled from air

Multiple Choice

Which of the following best describes a 'load' in an electric circuit?

• A component that stores electrical energy

• A component that draws current from a source

• A component that controls voltage

• A component that switches the circuit on or off

Multiple Choice

Based on the diagrams, what are the essential components required to complete a simple electric circuit?

• Battery, Load, Switch, Conductor

• Battery, Capacitor, Inductor, Switch

• Load, Resistor, Diode, Switch

• Battery, Fuse, Diode, Capacitor

Fill in the Blank

A resistor is mainly used to control ___ and voltage within the circuit.

Multiple Choice

Which of the following statements about capacitors is correct?

• Capacitors store electrical energy in the form of electrostatic charge.

• Capacitors are used to amplify signals in a circuit.

• Capacitors are only found in large electric motors.

• Capacitors control the direction of current flow.

Multiple Select

Select all the correct statements about inductors.

• Inductors are charged with a magnetic field.

• Inductors produce currents in the same direction when the field collapses.

• Inductors are used to oppose changes in existing current in AC circuits.

• Inductors store electrical energy in the form of electrostatic charge.

Multiple Choice

Component that Convert AC to DC and allow current to flow in one Direction

• Capacitor

• Diode

• Inverter

• Resistor

Multiple Choice

Which component is responsible for protecting a circuit by melting if the current exceeds a specified value?

• Cell

• Battery

• Fuse

• Transformer

Multiple Select

Which of the following components supply electrical energy?

• DC supply

• AC supply

• Earth (Ground)

• Fuse

Fill in the Blank

A transducer which converts electrical energy to kinetic energy is called a ___.

Multiple Choice

Which type of switch is normally closed (on) and only opens (off) when the button is pressed?

• Push Switch (push-to-make)

• Push-to-Break Switch

• On-Off Switch (SPST)

• 2-way Switch (SPDT)

Fill in the Blank

Fill in the blank: Batteries are common sources of ___ current.

Multiple Choice

this is the symbol for a _____?

• switch
• light 
• battery
• wires

Multiple Choice

A ______ opens and closes a circuit. 

• power source
• conductor
• switch
• output device

Multiple Choice

Prevents electric current from flowing.

• open circuit
• conductor
• electricity
• closed circuit

Multiple Choice

If a person touches a live wire, he or she gets a severe:

• circuit
• electric shock
• overloading
• Earth

Multiple Choice

The flow of electricity through a circuit

• Closed Circuit

• Open Circuit

• Electric Current

• Magnetic

Multiple Choice

this circuit is...?

• open
• closed
• parallel
• all of the above

Multiple Choice

An electrical circuit is open when the light turns on.

• True

• False

Multiple Choice

 What is a continuous path for electricity to travel in going from one end of a battery through wires back to the other end of the battery?

• electricity path

• circuit

• lighting path

• wiring

Multiple Choice

Which of the following can work as an energy source?

• Battery
  
• Light bulb
• Wire
  
• All of them

Multiple Choice

This circuit has a battery, buzzer, and switch.
When the switch is closed the buzzer will sound because -

• the switch gives energy to the battery
• the buzzer is made of special plastic
• the wires are cooled by the surrounding air
• electricity can flow in a complete path

Multiple Choice

A pathway for electricity to travel is called___________

• current
• static electrcity
• circuit
• circle

Multiple Choice

The component of a circuit that consumes the electrical energy. Example: light bulb, bell or motor.

• load

• switch

• power source

• circuit

Multiple Choice

What is the main function of a capacitor in a circuit?

• To store electrical energy

• To increase resistance

• To decrease voltage

• To measure current

Multiple Choice

What is the role of a transformer in an electric circuit?

• To increase or decrease voltage

• To store electrical energy

• To convert AC to DC

• To measure current

Multiple Choice

What is the role of a diode in a circuit?

• To allow current to flow in one direction only

• To increase voltage

• To decrease resistance

• To measure current

Multiple Choice

What is the component that connects all parts of a circuit and allows electricity to flow?

• switch

• wires

• load

• insulator

Multiple Choice

A ___________ helps manage the flow of electricity in a circuit by reducing the amount of current that can pass through.

• protons

• voltage

• resistor

• electrons

Multiple Choice

What is the role of a switch in an electrical circuit?

• To increase voltage

• To decrease current

• To open or close the circuit

• To store electrical energy

Multiple Choice

A continuous flow of electricity is called_____________

• series
• circuit
• static
• current