Question 1 The two basic kinds of transistor circuits are amplifying and switchi

Question

Question 1

The two basic kinds of transistor circuits are amplifying and switching.

True

False

2 points

Question 2

The bridge rectifier is similar to a full-wave rectifier because it produces a full-wave output voltage.

True

False

2 points

Question 3

A semiconductor is an element with electrical properties between those of a conductor and those of an insulator.

True

False

2 points

Question 4

The dc beta is defined as the dc collector current divided by the dc emitter current.

True

False

2 points

Question 5

An ideal diode acts like a switch that closes when forward-biased and opens when reverse-biased.

True

False

2 points

Question 6

With a half-wave rectifier, the output frequency equals the input frequency.

True

False

2 points

Question 7

A pure semiconductor is also referred to as:

a clean room device

intrinsic

extrinsic

transistor

4 points

Question 8

Silicon that has been doped with a trivalent impurity is called a:

N-type semiconductor

P-type semiconductor

P-N junction

covalent bond

4 points

Question 9

In a silicon atom, what is the distance between the valence band and the conduction band called?

energy gap

depletion layer

P-N junction

intrinsic

4 points

Question 10

A diode is a nonlinear device because the graph of its current versus voltage is:

a straight line

not a straight line

inversely proportional to the resistance

exponential

4 points

Question 11

Ideally, a diode acts like a perfect conductor when forward-biased and:

like a perfect conductor when reverse-biased

like a perfect semiconductor when reverse-biased

like a perfect insulator when reverse-biased

like a perfect diode when reverse-biased

4 points

Question 12

A diode that exhibits high resistance in both directions when measured with an ohmmeter is:

shorted

leaky

open

a properly operating diode

4 points

Question 13

The knee voltage of a germanium diode is approximately ________.

0.7 V

0.3 V

1.7 V

1.3 V

4 points

Question 14

Much of the information on a manufacturer's data sheet is:

necessary to understand diode circuits

necessary to troubleshoot diode circuits

obscure and of use only to circuit designers

necessary only to electronics technicians

4 points

Question 15

The output frequency of a half-wave rectifier is:

twice the input frequency

half the input frequency

equal to the input frequency

four times the input frequency

4 points

Question 16

A step-up transformer will produce a secondary voltage that is:

smaller than the primary

equal to the primary

larger than the primary

rectified.

4 points

Question 17

What is the name of the circuit shown in the Figure 1 below?

Figure 1

half-wave rectifier

full-wave rectifier

bridge rectifier

voltage doubler

4 points

Question 18

Which region of the transistor is physically the largest?

collector

emitter

base

beta

4 points

Question 19

Kirchhoff’s current law describes transistor currents as follows:

emitter current equals the sum of collector and base currents.

collector current equals the sum of base and emitter currents.

base current equals the sum of collector and emitter currents.

emitter current equals collector current minus the base current.

4 points

Question 20

Refer to Figure 2 below, what is the possible problem if VB is equal to 0 V and VC is equal to 15 V?

Figure 2

transistor is shorted

RB is open

VCC is 0 V

transistor is blown open

4 points

Question 21

Refer to Figure 2, what is the possible problem if VB is equal to 15 V and VC is equal to 15 V?

Figure 2

transistor is blown open

VBB is 0 V

transistor is shorted

VCC is 0 V

4 points

Question 22

Using the load line shown in Figure 3, what is the transistor's collector current if biased at the point labelled Q?

Figure 3

1.5 mA

3 mA

4.5 mA

7 mA

4 points

Question 23

In the circuit shown in the Figure 4 below, calculate the saturation current?

Figure 4

Path: p

Words:0

4 points

Question 24

In the Common Collector (CC) circuit of Figure 5 below consider = 49 and VBE = 0.7 V.

Figure 5

Find the following:

IB

IE

VCE

VE

VB

Path: p

Words:0

a clean room device

intrinsic

extrinsic

transistor

Explanation / Answer

1.The two basic kinds of transistor circuits are amplifying and switching.

Ans-False

2.The bridge rectifier is similar to a full-wave rectifier because it produces a full-wave output voltage.

Ans-True.

3.A semiconductor is an element with electrical properties between those of a conductor and those of an insulator.

Ans-True

4.The dc beta is defined as the dc collector current divided by the dc emitter current.

Ans-True

5.An ideal diode acts like a switch that closes when forward-biased and opens when reverse-biased.

Ans-True

6.With a half-wave rectifier, the output frequency equals the input frequency.

Ans-True

7.A pure semiconductor is also referred to as:Intrinsic

8.Silicon that has been doped with a trivalent impurity is called a: P type Semiconductor.

9.In a silicon atom, what is the distance between the valence band and the conduction band called? Energy Gap

10.A diode is a nonlinear device because the graph of its current versus voltage is: Not a straight line.

11.Ideally, a diode acts like a perfect conductor when forward-biased and: like a perfect insulator when it is reversed biased.

12.A diode that exhibits high resistance in both directions when measured with an ohmmeter is: Open

13. The knee voltage of a germanium diode is approximately : 0.3 V

14.Much of the information on a manufacturer's data sheet is:necessary only to electronics technicians.

15.The output frequency of a half-wave rectifier is:equal to the input frequency.

16.A step-up transformer will produce a secondary voltage that is: Larger than Primary

17. Image is Full Wave rectifier.

18.Which region of the transistor is physically the largest : Collector.

19.Kirchhoff’s current law describes transistor currents as follows: emitter current equals the sum of collector and base currents.

20.

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