Analog Electronics- Quiz II Date: 10.10.2023

Name of the Student

1. When the intensity of light increases, the reverse current in a photo-diode _____

• a) Increases
• b) decreases
• c) is unaffected
• d) none of these

2. The reverse current in the diode is of the order of __

• a) kA
• b) mA
• c) µA
• d) A

3. The leakage current in a crystal diode is due to _____

• a) minority carriers
• b) majority carriers
• c) junction capacitance
• d) none of the above

4. If the doping level of the crystal diode is increased, the breakdown voltage is ___

• a) remains the same
• b) is increased
• c) is decreased
• d) none of the above

5. A zener diode has __________

• a) one pn junction
• b) two pn junction
• c) three pn junction
• d) none of the above

6.The most widely used rectifier is _____

• a) half wave rectifier
• b) Centre tap full wave rectifier
• c) Bridge full wave rectifier
• d) none of the above

7. To display the digit 0 in a seven segment display

• a) A must be lighted
• b) F must be off
• c) G must be on
• d) all segments except G should be lighted

8. Which of the following material is used in the manufacturing of LED to produce red light?

• a) Gallium
• b) Phosphorous
• c) Gallium Phosphide
• d) Gallium arsenide

9. Terminal 7 of an Op-amp is connected to

• a) +Vcc
• b) -Vcc
• c) ground
• d) input