Chapter 3

Question 1

Question

When the graph of current versus voltage is a straight line, the device is referred to as

Answer

Active
Linear
Nonlinear
Passive

Question 2

Question

What kind of device is a resistor?

Answer

Unilateral
Linear
Nonlinear
Bipolar

Question 3

Question

What kind of device is a diode?

Answer

Bilateral
Linear
Nonlinear
Unipolar

Question 4

Question

How is a nonconducting diode biased?

Answer

Forward
Inverse
Poorly
Reverse

Question 5

Question

When the diode current is large, the bias is

Answer

Forward
Inverse
Poor
Reverse

Question 6

Question

The knee voltage of a diode is approximately equal to the

Answer

Applied voltage
Barrier potential
Breakdown voltage
Forward voltage

Question 7

Question

The reverse current consists of minority-carrier current and

Answer

Avalanche current
Forward current
Surface-leakage current
Zener current

Question 8

Question

How much voltage is there across the second approximation of a silicon diode when it is forward biased?

Answer

0
0.3 V
0.7 V
1 V

Question 9

Question

How much current is there through the second approximation of a silicon diode when it is reverse biased?

Answer

0
1 mA
300 mA
None of the above

Question 10

Question

How much forward diode voltage is there with the ideal diode approximation?

Answer

0
0.7 V
More than 0.7 V
1 V

Question 11

Question

The bulk resistance of a 1N4001 is

Answer

0
0.23 Ω
10 Ω
1 kΩ

Question 12

Question

If the bulk resistance is zero, the graph above the knee becomes

Answer

Horizontal
Vertical
Tilted at 45°
None of the above

Question 13

Question

The ideal diode is usually adequate when

Answer

Troubleshooting
Doing precise calculations
The source voltage is low
The load resistance is low

Question 14

Question

The second approximation works well when

Answer

Troubleshooting
Load resistance is high
Source voltage is high
All of the above

Question 15

Question

The only time you have to use the third approximation is when

Answer

Load resistance is low
Source voltage is high
Troubleshooting
None of the above

Question 16

Question

How much load current is there in Fig. 3-21 with the ideal diode?

Image:

Fig 3 21 (binary/octet-stream)

Answer

0
11.3 mA
12 mA
25 mA

Question 17

Question

How much load current is there in fig 3-21 with the second approximation?

Image:

Fig 3 21 (binary/octet-stream)

Answer

0
11.3 mA
12 mA
25 mA

Question 18

Question

How much load current is there in fig 3-21 with the third approximation?

Image:

Fig 3 21 (binary/octet-stream)

Answer

0
11.3 mA
12 mA
25 mA

Question 19

Question

If the diode is open in fig 3-21 the load voltage is

Image:

Fig 3 21 (binary/octet-stream)

Answer

0
11.3 V
20 V
-15 V

Question 20

Question

If the resistor is ungrounded in fig 3-21, the voltage measured with a DMM between the top of the resistor and ground is closest to

Image:

Fig 3 21 (binary/octet-stream)

Answer

0
12 V
20 V
-15 V

Question 21

Question

The load voltage measures 12 V in fig 3-21 The trouble may be

Image:

Fig 3 21 (binary/octet-stream)

Answer

A shorted diode
An open diode
An open load resistor
Too much supply voltage

Question 22

Question

Using the third approximation in fig 3-21 how low must Rl be before the diode's bulk resistance must be considered?

Image:

Fig 3 21 (binary/octet-stream)

Answer

1 Ω
10 Ω
23 Ω
100 Ω

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Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

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	Created by Katrina Himes over 6 years ago