EMC-QUIZ, NOVEMBER, WEEK 50

THERE IS ONE GOOD ANSWER, OR ONE THAT IS BETTER THAN THE OTHERS

Shielded pairs (STP) and multi-conductors shielded cables

a) STP are better than UTP (unshielded) because the shield provide a less resistive path for returning the signal currents.

b) STP are better than UTP (unshielded) because the shield will collect the EMI currents that would circulate on the internal wires.

c) STP are better than UTP (unshielded) because the metallic shield makes a short-circuit for the ground loop voltages.

d) STP are better because they clearly separate the the two fonctions: the wire pairs carry the intentional current while the shield neutralizes the EMI currents.

Click for the correct answer