Question

which of the following conduits is too thin to be threaded?
fmc
emt
rmc
imc

Explanation:

EMT (Electrical - Metallic - Tubing) is a thin - walled conduit and is too thin to be threaded. Other conduits like FMC (Flexible Metal Conduit), RMC (Rigid Metal Conduit), and IMC (Intermediate Metal Conduit) can be threaded under appropriate conditions.

Answer:

B. EMT