A: 2
B: 3
C: 4
D: 5
举一反三
- According to the circuits shown in figure 3 and the figure 4, the current in Figure 5 i = [img=853x121]180317233475736.jpg[/img] Figure 3 Figure 4 Figure 5 A: -6A B: -4 A C: -2 A D: 6A
- In the circuit shown, in terms of its external characteristics, ( )[img=692x106]17e0be1193fdf7f.png[/img]Figure 1 Figure 2 Figure 3 Figure 4 A: Figure 2 is equivalent to Figure 3 B: Figure 1 is equivalent to Figure 4 C: Figure 1 is equivalent to Figure 2
- In the circuit shown in Figure , the voltage U is ________[img=481x296]18031723660721c.jpg[/img] A: 2V B: -2V C: 6V D: -6V
- Find out the feedback path in the circuit shown in the figure and which is negative feedback .[img=1011x700]1803a2b1332fd88.png[/img] A: A B: B C: C D: D
- Find out the feedback path in the circuit shown in the figure and which is positive feedback.[img=1011x700]1803a2b4bd54568.png[/img] A: A B: B C: C D: D
内容
- 0
Find out the feedback path in the circuit shown in the figure and which is only ac feedback.[img=1011x700]1803a2b4bfbe0ef.png[/img] A: A B: B C: C D: D
- 1
For the circuit shown in Figure, ignored the saturation of the transistor ,then the maximum power of each transistor maybe ( )[img=455x503]1803a2c026177a4.png[/img] A: 9W B: 4.5W C: 0.9W D: 1.8W
- 2
For the circuit shown in Figure, ignored the saturation of the transistor ,then the maximum collector-emitter voltage of the transistor maybe ( )[img=455x503]1803a2c05f0af93.png[/img] A: 12V B: 24V C: 6V D: 18V
- 3
As shown in the figure, a lot of 1 to 2 mm hemorrhagic points in the mucous membrane of stomach. It means[img=663x539]17de86a58c534c3.jpg[/img] A: purpuras B: petechiae C: ecchymoses D: spongiosis
- 4
As shown in the figure, which of the following situations will cause the BE junction of the transistor to be destroyed by a large current? ()[img=214x209]1803b84aea8e048.jpeg[/img] A: BE is short-circuited B: CE is short-circuited C: Rb is short-circuited D: Rc is short-circuited