Analog Circuits Practice Test 4

1. An active device is one which ___________

Mechanically controls electron flow

Automatically controls electron flow

Pneumatically controls electron flow

Electrically controls electron flow

2. Given V_out = 5V, β=100, I1=10mA, R1=100KΩ. Find the output resistance.

8.163 kΩ

8.4 kΩ

8 kΩ

7.582 kΩ

3. A transistor is a current controlled device because_______________

In the collector region movement of charge carrier is because of the holes which are majority charge carrier in the base region

In the base region movement of charge carrier is because of the electrons which are minority charge carrier in the base region

In the collector region movement of charge carrier is because of the electrons which are minority charge carrier in the collector region

In the base region movement of charge carrier is because of the holes which are majority charge carrier in the base region

4. In the given circuit, what is the value of current through R₂?

9.3 mA

9.7 mA

10 mA

0 mA

5. Which of the following equipment can’t be used to check the condition of a diode?

Digital Display Meter

Ohmmeter

Curve Tracer

CRO

6. Which of the following materials is used to make LEDs?

Silicon

GaAsP

Germanium

Selenium

7. Which circuit has been represented in the associated circuit diagram?

Half wave rectifier

AND gate

Full wave rectifier

NOT gate

8. Which of the following statements are true about the given circuit?

For silicon diodes, the value of v₀=(v_i-1.4) V

The PIV of the diode D1 must be greater than v0 for the circuit to function as a bridge rectifier

All of the mentioned

The circuit is that of a bridge rectifier

9. Which model of the diode equivalent circuit is represented by the given diagram?

Simplified Model

Differential Model

Piecewise Linear Model

Ideal Diode Model

10. Assuming the diode in the given circuit diagram to be a silicon p-n junction diode, what is the current for the given circuit diagram?

5 mA

4.3 mA

43 mA