Question

From the circuit and the diode characteristics given alongside, and assuming R=2k, what is the value of diode voltage at the operating point?

(a) 0.78 V

(b) 10 V

(c) 0 V

(d) 1v

I got this question in an interview for job.

My doubt stems from Load Line Analysis in portion Diode Circuit of Analog Circuits

Answer 1

The correct choice is (a) 0.78 V

Easy explanation: On drawing the load line with the equation: VD = ED + IDRD, we get the operating point with the value of at voltage at around 0.7-0.8 V. Hence, VDq=0.78 V.