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# Electronic Devices - Voltage Regulators

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### Exercise

"Forgiveness is a virtue of the brave."
- Indira Gandhi
6.

In which period is the capacitor filter discharged through the load in a full-wave rectifier?

 A. The time during the positive cycle B. The time during which the diodes are not conducting C. The time during which the diode(s) is (are) conducting D. The time during the negative cycle

7.

The 7805 regulator IC provides ________.

 A. 5 V B. –5 V C. 12 V D. –12 V

8.

What is the range of the voltage level of the LM317 adjusted voltage regulator?

 A. 0 V to 5 V B. 1.2 V to 37 V C. –5 V to –24 V D. 5 V to 24 V

9.

A voltage regulator with a no-load output dc voltage of 12 V is connected to a load with a resistance of 10 . If the load resistance decreases to 7.5 , the load voltage will decrease to 10.9 V. The load current will be ________, and the percent load regulation is ________.

 A. 1.45 A, 90.8% B. 1.45 A, 10.09% C. 1.2 A, 90.8% D. 1.2 A, 10.09%

10.

Refer to the given figure. Determine the output voltage, VOUT.

 A. 25 V B. 5.1 V C. 20.2 V D. 4.1 V