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WEEK11-12 Flyback,PF, Half-Bridge

Total questions: 17

Worksheet time: 9mins

Name
Class
Date
1.

Determine the value of the required capacitor C

a)

10 μ\mu F

b)

0.85 μ\mu F

c)

18.5 μ\mu F

d)

13 μ\mu F

2.

Average input power?

a)

459 Watt

b)

469 Watt

c)

479 Watt

d)

489 Watt

3.

Voltage THD

a)

32 %

b)

36 %

c)

40 %

d)

44 %

4.

Current THD

a)

28 %

b)

51 %

c)

75.4 %

d)

78.8 %

5.

Power Factor

a)

0.55

b)

0.7

c)

0.79

d)

0.83

6.

Calculate Duty in %

a)

40 %

b)

45 %

c)

50 %

d)

55 %

7.

Calculate the average inductor current

a)

0.75

b)

0.8

c)

0.85

d)

0.9

8.

Peak-to-Peak Inductor Current ?

a)

10 mA

b)

13.3 mA

c)

17.5 mA

d)

19.5 mA

9.

Turn ratio N1:N2 ?

a)

2.2:1

b)

3.18:1

c)

4.49:1

d)

8.33:1

10.

Iout ?

a)

0.12 A

b)

8.33 A

c)

12.0 A

d)

1200 A

11.

Maximum Voltage VDS ?

a)

12 V

b)

88 V

c)

100 V

d)

154 V

12.

L = ?

a)

11.7 μH

b)

117 μH

c)

1.17 mH

d)

11.7 mH

13.

Maximum voltage on Diode ?

a)

35 Vdc

b)

15 Vdc

c)

45 Vdc

d)

100 Vdc

14.

Calculate the voltage of each capacitor on the primary side.

a)

13 V

b)

15 V

c)

50 V

d)

100 V

15.

Find Duty %

a)

15 %

b)

20 %

c)

26 %

d)

35 %

16.

Find the output current.

a)

2.54 A

b)

3.84 A

c)

5.72 A

d)

7.96 A

17.

Find ΔIL\Delta IL when CCM and define ΔIL\Delta IL = 20% of IinI_{in}

a)

0.2 A

b)

0.4 A

c)

0.6 A

d)

0.8 A