Preselection MCQ's Based Test

What is Electricity ?

• The movement of electrons in a circuit.
• The generation of heat through electrical current.
• The flow of electric charge through a conductor.
• The conversion of energy from one form to another.

What is voltage ?

• The flow of electric current in a circuit.
• The resistance to the flow of electric current.
• The amount of electric charge in a circuit.
• Electric potential difference between two points in an electric circuit

How is electricity generated ?

• Electricity is generated through various methods such as burning fossil fuels, nuclear reactions, or harnessing renewable energy sources like wind or solar power.
• Electricity is generated by the movement of tectonic plates.
• Electricity is generated by rubbing two sticks together.
• Electricity is generated by capturing lightning bolts.

In a simple circuit, if you increase the voltage supplied to a light bulb, what happens to the brightness of the bulb?

• The brightness of the bulb decreases.
• The brightness of the bulb remains the same.
• The brightness of the bulb fluctuates.
• The brightness of the bulb increases.

What is the primary function of a circuit breaker in a home electrical system?

• To protect electrical circuits from overloading or short circuits.
• To control the temperature of the electrical system
• To provide a backup power source in case of a blackout
• To regulate the flow of electricity in the home

Which type of energy conversion occurs in a battery-powered flashlight?

• Thermal energy to electrical energy

• Mechanical energy to electrical energy

• Electrical energy to chemical energy

• Chemical energy to electrical energy

What is the primary function of a resistor in an electronic circuit?

• restrict the flow of current

• Generate electric current.
• Store electric charge.
• Amplify the electric current.

Which of the following is an example of a semiconductor component used in amplifying and switching electronic signals?

• transistor
• diode
• capacitor
• resistor

What is the primary purpose of an integrated circuit (IC) in electronic devices?

• To make electronic devices more expensive.
• To decrease the functionality of electronic devices.
• To miniaturize and combine multiple electronic components onto a single chip.
• To increase the power consumption of electronic devices.

In a circuit, a diode primarily functions as:

• A switch for electric current.
• A resistor for electric current.
• A capacitor for electric current.
• One-way valve for electric current