Analog Circuits Mock Test 2

10%

Question 1 of 10

1. On which of these does the diffusion capacitance of a diode not depend upon?

Dynamic conductance

Doping concentration

Reverse resistance

Forward current

Question 1 of 10

Question 2 of 10

2. Conductors also have drift current.

False

True

Question 2 of 10

Question 3 of 10

3. DC average current of a bridge full wave rectifier is _________
(Where I_m is the maximum peak current of input)

I_m/ᴨ

I_m/2ᴨ

2I_m/ᴨ

1.414I_m/ᴨ

Question 3 of 10

Question 4 of 10

4. In a half wave rectifier, the input sine wave is 250sin100 ᴨt Volts. The output ripple frequency of rectifier will be __________

200Hz

50Hz

100Hz

25Hz

Question 4 of 10

Question 5 of 10

5. From the circuit and the diode characteristics given and assuming R=1k, what is the value of voltage across the resistor at operating point?

10.7 V

10 V

9.3 V

0 V

Question 5 of 10

Question 6 of 10

6. From the given load characteristics, what is the value of diode current at operating point for the characteristics of R2?

0 mA

4.6 mA

10 mA

9.3 mA

Question 6 of 10

Question 7 of 10

7. For a diode the transition capacitance was 15pF. The diode is replaced with another diode of same material with twice cross sectional area. Terminal voltage remains unchanged. The capacitance of new diode is __________

7.5pF

15pF

60pF

30pF

Question 7 of 10

Question 8 of 10

8. Ripple factor of half wave rectifier is _________

0.48

1.21

1.3

1.414

Question 8 of 10

Question 9 of 10

9. What is voltage across the resistor R if V_A = -3V and V_B = -5V is _________ (Use constant voltage drop model assumption and take V_D = 0.5V)

-5V

-4V

-3V

Question 9 of 10

Question 10 of 10

10. In constant voltage drop diode in reverse bias is considered as a ___________

Perfect conductor

Capacitor

Perfect insulator

Resistor

Question 10 of 10