PN Junction Multiple Choice Questions with Answers – PDF Download

MCQ 1: One that is based on forward biased PN junction is:

1. photo diode
2. LED
3. photo voltaic cell
4. both a and b

MCQ 2: Diode characteristic curve is a plot between:

1. current and time
2. voltage and time
3. voltage and current
4. both a and b

MCQ 3: Photo diode is used for the detection of:

1. visible light
2. invisible light
3. no light
4. both a and b

MCQ 4: When semiconductor is doped half with trivalent and half with pentavalent impurities, the junction formed is known as:

1. PN junction
2. barrier junction
3. potential barrier
4. both a and b

MCQ 5: Color of light emitted by LED depends on:

1. its forward bias
2. its reverse bias
3. forward current
4. semiconductor material