(TCO 3) The peak secondary voltage of a transformer is 20.0 V. What is the peak load voltage for this transformer,

assuming the load is connected to the output of a full wave bridge rectifier consisting of silicon diodes?

20 V

28.28 V

18.6 V

19.3 V

(TCO 3) A transformer with a 40 V AC primary voltage and a 3:5 turns ratio has an output voltage of _____.

24 V

40 V

4 V

66.7 V

(TCO 3) A transformer with a 250 mA AC primary current and a 4:1 turns ratio has a secondary current of _____.

1 A

250 mA

4 A

400 mA

(TCO 3) The small AC variations found at the output of a bridge rectifier are called _____ voltage.

alternate

ripple

regulator

direct

(TCO 3) A resistive load of 2 kΩ is connected across the secondary windings of a 25:1 transformer. If the primary voltage is 50 V AC, what will be the secondary current?

25 mA

2 mA

625 mA

1 mA

(TCO 3) A transformer that has 1,500 windings around the core for the primary and 250 secondary windings will have a turns ratio of _____ to 1.

4

3

6

2

(TCO 3) A particular BJT has a base DC current of 1 mA and a collector DC current of 10 mA. What is the DC beta for this transistor?

1

10

100

1,000

 

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