Understanding Electrical Systems

1. The best description for the figure is:

• This figure shows the insulation for electrical wires

• c. This figure shows the grounding for the electrical system

• This figure shows the layout of electrical circuits

• This figure shows the safety measures for electrical installations

2. The figure shown is a:

• Analog Voltage Meter

• c. Electromechanical type induction meter

• Digital Multimeter

• Power Factor Meter

3. The device shown below is a:

• Analog Current Meter

• Power Factor Meter

• c. Electromechanical type induction meter

• Digital Voltage Meter

4. To ensure employees have both responsibility and authority, the following Safety Credo should be adopted by the employer:

• d. Safety is only the management's responsibility!

• b. If it cannot be done safely, it should be done!

• a. If it cannot be done safely, it must be done!

• c. If it can be done safely, it should be done!

5. The primary purpose of grounding in electrical systems is:

• b. To prevent electrical shock

• To improve signal strength

• To facilitate wireless communication

• To reduce electromagnetic interference

6. Which of the following is a type of smart meter?

• Smart thermostat

• Wireless router

• Energy storage system

• b. Digital meter

7. The main function of a watt-meter is to measure:

• Frequency

• Inductance

• c. Power

• Capacitance

8. In electrical safety, bonding refers to:

• Connecting electrical devices to water

• a. Connecting two or more conductive materials

• Disconnecting power sources for maintenance

• Using non-conductive materials for safety

9. The term 'electromechanical' refers to devices that:

• c. Are purely mechanical

• a. Use only electronic components

• d. Are purely electronic

• b. Combine electrical and mechanical processes

10. A smart energy meter can provide:

• Historical energy consumption trends

• a. Real-time energy consumption data

• Annual energy savings projections

• Only daily energy forecasts