NCCER Basic Electrical & Plumbing 2

Question 1

What is the purpose of a GFCI outlet in a bathroom?

Accepted Answer

To protect against electric shock near water sources

Answer

GFCI (Ground Fault Circuit Interrupter) outlets detect current leakage and trip within milliseconds to prevent electric shock near water.

Question 2

A homeowner notices their toilet runs continuously after flushing. What is the most likely cause?

Accepted Answer

Faulty flapper valve not sealing properly

Answer

A worn or misaligned flapper valve fails to seal the flush valve seat, allowing water to continuously flow from the tank into the bowl.

Question 3

When running new electrical wire through a wall, what is the minimum bend radius for NM cable (Romex)?

Accepted Answer

5 times the diameter of the cable

Answer

NM cable must be bent no tighter than 5 times the cable diameter to prevent damage to the conductors and insulation.

Question 4

Which pipe fitting is used to join two pipes of different diameters in a plumbing system?

Accepted Answer

Reducer

Answer

A reducer (or reducing coupling) connects pipes of two different sizes while maintaining flow in the same direction.

Question 5

What does the term 'voltage drop' mean in an electrical circuit?

Accepted Answer

Reduction in voltage along a conductor due to resistance

Answer

Voltage drop is the decrease in electrical potential along a conductor caused by the conductor's resistance, which can cause lights to dim or motors to run poorly.

(NCCER) National Center for Construction Education and Research Certified Handyman Practice Test

(NCCER) National Center for Construction Education and Research Certified Handyman Practice Test

NCCER Basic Electrical & Plumbing 2