Applications Of Diode

Step 1: Concept
Phase relationship depends on the transistor configuration.
Step 2: Analysis
In a common emitter (CE) configuration, an increase in base-emitter voltage increases collector current, which increases the voltage drop across the load resistor, thereby decreasing the output collector voltage.
Step 3: Conclusion
This inverse relationship results in a phase shift.
Final Answer: (C)

Step 1: Medical Risk
Diabetic patients are prone to sudden, dangerous drops in blood sugar (hypoglycemia).
Step 2: Glucose Function
Glucose is a simple sugar that is absorbed directly into the bloodstream without needing digestion.
Step 3: Conclusion
Carrying glucose allows the patient to raise their blood sugar level almost instantaneously in case of a sudden drop.
Final Answer: (d)

Concept: In reverse bias, diode current is approximately equal to drift current (very small and constant).

Step 1: Identify diode condition.
From the circuit, diode is reverse biased.

Step 2: Voltage drop across resistor.


Step 3: Voltage across diode.

Concept: Reverse bias widens depletion region.

Step 1: Effect on charges.
Charges are pulled away from junction.

Step 2: Result.
Potential barrier increases.

Concept:
•Diode conducts only when (cut-in voltage)
•When OFF → current = 0
•When ON → use Ohm’s law with total resistance

Step 1:Total resistance (ON state)

Step 2:At

Step 3:At

Step 4:Change in current Conclusion