Electronics. Test 6 – Online Maritime Tests

Diodes are widely used in rectification, or the conversion of alternating current to direct current. This circuit symbol is such example. The input voltage V(in) is sine-wave AC. Which of the shown output voltages is correct for this circuit?

Figure 3
Figure 1
Figure 2
Figure 4

This figure is a transformer, with two windings, N(1) = 2000 and N(2) = 1000 turns, on a common magnetic circuit. Assume that there is no energy loss in the transformer itself. Calculate the current I(2) when the current I(1) = 2 A.

I(2) = 4 A
I(2) = 2 A
I(2) = 1 A
I(2) = 8 A

There are many applications in circuit theory where it is important to obtain the maximum possible power that a given source can deliver. This figure consists of a practical voltage source V(g) with internal resistance R(s). A resistance R(L) will maximize the power transmission from the source to R(L)?

R(L) = ? R(s)
R(L) = R(s) / sqrt (3)
R(L) = R(s)
R(L) = 2 R(s)

This circuit is a transformer with two windings, N(1) = 2000 and N(2) = 1000 turns, on a common magnetic circuit. Assume that there are no energy losses in the transformer itself. Calculate the output voltage V(2) when the input voltage is V(1) = 100 Volt.

V(2) = 200 V
V(2) = 400 V
V(2) = 50 V
V(2) = 10 V

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