EIM 10 Quiz

What did Benjamin Franklin invent in 1753?

• Catenary wire conductors

• Lightning rods

• Meshed conductors

• Grounding rods

In installing the lightning protection system, the ground rod should not exceed ___ ohms.

• 30

• 25

• 20

• 35

This type of earthing system follows a method of burying a copper plate or galvanized plate in an earth pit.

• Plate Earthing

• Rod Earthing

• Pipe Earthing

• Chemical Earthing

When installing circuit breakers to the panelboard, where should the main breaker be placed?

• Uppermost right side of the panel board

• Lowermost right side of the panel board

• Uppermost left side of the panel board

• Anywhere on the top of the panel board

This type of circuit breaker test allows the checking of power frequency and the capacity to withstand impulse voltage.

• Short -Circuit Test

• Dielectric Test

• Mechanical Test

• Thermal Test

This is a type of circuit breaker that trips through an electromagnet attracting an armature.

• Power Circuit Breaker

• Magnetic Type Circuit Breaker

• Solid-State Circuit Breaker

• Molded-Case Circuit Breaker

What kind of switch is used in safety switches?

• Double Pole, Single Throw

• Double Pole, Double Throw

• Single Pole, Double Throw

• Single Pole, Single Throw

This is where all the ground and neutral wires are attached to the electrical panel.

• Terminal bar

• Ground bus

• Positive terminal

• Neutral terminal

What is the primary purpose of installing electrical protective devices in distribution systems?

• To increase power consumption

• To decrease electrical safety

• To reduce the risk of electrical fires

• To weaken the power supply

Which protective device is commonly used to prevent electrical shocks in a home or building?

• Surge protector

• Circuit breaker

• Transformer

• Multimeter