Diodes and Applications - Technical MCQs

Q1:

When checking a diode, low resistance readings both ways indicate the diode is:

A open

B satisfactory

C faulty

D not the problem

ANS:C - faulty

In the forward bias diode can conduct due to low resistance and in reverse bias as the diode has high resistance the current is negligible. So when the above condition occur the diode is faulty.