Question

The point of intersection which is called the Q point, represents

• A. The intersection of cutoff and diode current
• B. The intersection of cutoff and the diode voltage
• C. The intersection of saturation and diode current
• D. The intersection of the diode curve and the load line

Hint:

Load Line Analysis. The Q-point (operating point) of a device in a circuit is found at the intersection of the device's characteristic curve and the circuit's DC load line.

Answer 1

The Correct Option is D

The Q-point, or Quiescent operating point, represents the DC operating condition (DC voltage across and DC current through) of a non-linear device like a diode or transistor within a specific circuit
This operating point is determined by both the characteristics of the device itself and the constraints imposed by the external circuit
Graphically, the device's behavior is represented by its characteristic curve (e
g
, I-V curve for a diode)
The constraints imposed by the external circuit (voltage source and resistors) are represented by the DC load line plotted on the same axes
The Q-point is the unique point where the device characteristic curve intersects the load line, satisfying both the device's behavior and the circuit's constraints simultaneously
Cutoff and saturation are typically terms related to transistor operating regions or the intercepts of the load line, not the Q-point itself