Question 1

An amplifier can invert the phase of a signal and still be a linear amplifier.

Accepted Answer

A) True 
 B)False  True

Question 2

In a CC amplifier, the power gain is approximately equal to the

Accepted Answer

A) voltage gain 
B) current gain squared times RL 
C) voltage gain squared divided by RL  
D) current gain 
A) voltage gain 
B) current gain squared times RL 
C) voltage gain squared divided by RL  
D) current gain D

Question 3

Figure 4
-Compare Figure 4 to Figure 3. The two- transistor circuit in Figure 4 has

Accepted Answer

A) increased power gain 
B) much more voltage gain 
C) much higher input resistance 
D) all of the above 
A) increased power gain 
B) much more voltage gain 
C) much higher input resistance 
D) all of the above A

Question 4

Figure 1
-Refer to Figure 1. Looking in at Vin, the input resistance is approximately

Accepted Answer

A) 5.6 k▲ 
B) 14 k▲ 
C) 39 k▲ 
D) 1.8 k▲ 
A) 5.6 k▲ 
B) 14 k▲ 
C) 39 k▲ 
D) 1.8 k▲

Question 5

If a load resistor is connected to a CE amplifier, the gain will decrease.

Accepted Answer

A) True 
 B)False

Question 6

Figure 4
-Refer to Figure 4. The input signal is an 8 Vpp sine wave driving a load that is a 16 ▲ speaker. The power delivered to the speaker is approximately

Accepted Answer

A) 250 mW 
B) 0.75 W 
C) 1 W 
D) 0.5 W 
A) 250 mW 
B) 0.75 W 
C) 1 W 
D) 0.5 W

Question 7

Figure 2
-Refer to Figure 2. The input resistance at the base, Rin(base), is approximately

Accepted Answer

A) 12 k▲ 
B) 8.5 k▲ 
C) 17 k▲ 
D) 5.8 k▲ 
A) 12 k▲ 
B) 8.5 k▲ 
C) 17 k▲ 
D) 5.8 k▲

Question 8

Figure 6 Assume there is no loading effect of QS1U1B12S1U1B0/QS1U1B13 S1U1B0on QS1U1B11 S1U1B0and RS1U1B1L S1U1B0is the load.
-Refer to Figure 6. The total voltage gain is approximately

Accepted Answer

A) 75 
B) 100 
C) 25 
D) 50 
A) 75 
B) 100 
C) 25 
D) 50

Question 9

Figure 7
-Refer to Figure 7. Describe the expected signals at Vout1 and Vout2 with respect to the input

Accepted Answer

A) Vout1 is inverted; Vout2 is not- inverted 
B) Vout1 is not- inverted; Vout2 is inverted 
C) both are inverted 
D) neither signal is inverted 
A) Vout1 is inverted; Vout2 is not- inverted 
B) Vout1 is not- inverted; Vout2 is inverted 
C) both are inverted 
D) neither signal is inverted

Question 10

The Sziklai pair uses two types of transistors, an npn and a pnp.

Accepted Answer

A) True 
 B)False

Question 11

The hybrid parameter that is the same as fiac is

Accepted Answer

A) hrb 
B) hfe 
C) hrc 
D) hoc 
A) hrb 
B) hfe 
C) hrc 
D) hoc

Question 12

Figure 6 Assume there is no loading effect of QS1U1B12S1U1B0/QS1U1B13 S1U1B0on QS1U1B11 S1U1B0and RS1U1B1L S1U1B0is the load.
-Refer to Figure 6. The dc voltage across RL should be approximately

Accepted Answer

A) 6.3 V 
B) 5.2 V 
C) 7.5 V 
D) 4.0 V 
A) 6.3 V 
B) 5.2 V 
C) 7.5 V 
D) 4.0 V

Question 13

In a common- base (CB)amplifier

Accepted Answer

A) open 
B) connected through a large resistor to ground 
C) the base lead is at dc ground 
D) the base lead is at ac ground 
A) open 
B) connected through a large resistor to ground 
C) the base lead is at dc ground 
D) the base lead is at ac ground

Question 14

Figure 1
-Refer to Figure 1. The ac emitter resistance, re', is approximately

Accepted Answer

A) 680 ▲ 
B) 8 ▲ 
C) 13 ▲ 
D) 25 ▲ 
A) 680 ▲ 
B) 8 ▲ 
C) 13 ▲ 
D) 25 ▲

Question 15

To calculate the end points for an ac load line, it is assumed that

Accepted Answer

A) the load resistor is removed 
B) RC is in parallel with RE 
C) ac and dc resistances are the same 
D) capacitors are shorted 
A) the load resistor is removed 
B) RC is in parallel with RE 
C) ac and dc resistances are the same 
D) capacitors are shorted

Question 16

Figure 3
-Refer to Figure 3. VE is approximately

Accepted Answer

A) 1.0 V 
B) 5.0 V 
C) 2.5 V 
D) 7.5 V 
A) 1.0 V 
B) 5.0 V 
C) 2.5 V 
D) 7.5 V

Question 17

Figure 5
-Refer to Figure 5. Express the overall voltage gain as a standard voltage gain

Accepted Answer

A) 100,000 
B) 1000 
C) 316 
D) 562 
A) 100,000 
B) 1000 
C) 316 
D) 562

Question 18

Figure 6 Assume there is no loading effect of QS1U1B12S1U1B0/QS1U1B13 S1U1B0on QS1U1B11 S1U1B0and RS1U1B1L S1U1B0is the load.
-Refer to Figure 6. Assume R2 is open. This would cause

Accepted Answer

A) no ac output 
B) the dc voltage on Q1 base to decrease 
C) an increase in IE1  
D) all of the above 
A) no ac output 
B) the dc voltage on Q1 base to decrease 
C) an increase in IE1  
D) all of the above

Question 19

The measurement unit for fiac is

Accepted Answer

A) the ohm 
B) the volt 
C) the ampere 
D) there are no units as it is a ratio 
A) the ohm 
B) the volt 
C) the ampere 
D) there are no units as it is a ratio

Question 20

Figure 3
-Refer to Figure 3. Rin is approximately

Accepted Answer

A) 1.0 k▲ 
B) 1.8 k▲ 
C) 4.5 k▲ 
D) 2.7 k▲ 
A) 1.0 k▲ 
B) 1.8 k▲ 
C) 4.5 k▲ 
D) 2.7 k▲

An amplifier can invert the phase of a signal and still be a linear amplifier.

In a CC amplifier, the power gain is approximately equal to the

Figure 4 -Compare Figure 4 to Figure 3. The two- transistor circuit in Figure 4 has

Figure 1 -Refer to Figure 1. Looking in at Vin, the input resistance is approximately

If a load resistor is connected to a CE amplifier, the gain will decrease.

Figure 4 -Refer to Figure 4. The input signal is an 8 Vpp sine wave driving a load that is a 16 ▲ speaker. The power delivered to the speaker is approximately

Figure 2 -Refer to Figure 2. The input resistance at the base, Rin(base), is approximately

Figure 6 Assume there is no loading effect of Q₂/Q₃on Q₁and R_Lis the load. -Refer to Figure 6. The total voltage gain is approximately

Figure 7 -Refer to Figure 7. Describe the expected signals at Vout1 and Vout2 with respect to the input

The Sziklai pair uses two types of transistors, an npn and a pnp.

The hybrid parameter that is the same as fiac is

Figure 6 Assume there is no loading effect of Q₂/Q₃on Q₁and R_Lis the load. -Refer to Figure 6. The dc voltage across RL should be approximately

In a common- base (CB)amplifier

Figure 1 -Refer to Figure 1. The ac emitter resistance, re', is approximately

To calculate the end points for an ac load line, it is assumed that

Figure 3 -Refer to Figure 3. VE is approximately

Figure 5 -Refer to Figure 5. Express the overall voltage gain as a standard voltage gain

Figure 6 Assume there is no loading effect of Q₂/Q₃on Q₁and R_Lis the load. -Refer to Figure 6. Assume R2 is open. This would cause

The measurement unit for fiac is

Figure 3 -Refer to Figure 3. Rin is approximately

Introduction to Semiconductors

Diodes and Applications

Special-Purpose Diodes

Bipolar Junction Transistors

Transistor Bias Circuits

BJT Power Amplifiers

Field-Effect Transistors Fets

Fet Amplifiers and Switching Circuits

Amplifier Frequency Response

Thyristors

The Operational Amplifier

Basic Op-Amp Circuits

Special-Purpose Integrated Circuits

Active Filters

Oscillators

Voltage Regulators

Communication Devices and Methods

Filters

Exam 6: BJT Amplifiers

An amplifier can invert the phase of a signal and still be a linear amplifier.

In a CC amplifier, the power gain is approximately equal to the

Figure 4 -Compare Figure 4 to Figure 3. The two- transistor circuit in Figure 4 has

Figure 1 -Refer to Figure 1. Looking in at Vin, the input resistance is approximately

If a load resistor is connected to a CE amplifier, the gain will decrease.

Figure 4 -Refer to Figure 4. The input signal is an 8 Vpp sine wave driving a load that is a 16 ▲ speaker. The power delivered to the speaker is approximately

Figure 2 -Refer to Figure 2. The input resistance at the base, Rin(base), is approximately

Figure 6 Assume there is no loading effect of Q2/Q3 on Q1 and RL is the load. -Refer to Figure 6. The total voltage gain is approximately

Figure 7 -Refer to Figure 7. Describe the expected signals at Vout1 and Vout2 with respect to the input

The Sziklai pair uses two types of transistors, an npn and a pnp.

The hybrid parameter that is the same as fiac is

Figure 6 Assume there is no loading effect of Q2/Q3 on Q1 and RL is the load. -Refer to Figure 6. The dc voltage across RL should be approximately

In a common- base (CB)amplifier

Figure 1 -Refer to Figure 1. The ac emitter resistance, re', is approximately

To calculate the end points for an ac load line, it is assumed that

Figure 3 -Refer to Figure 3. VE is approximately

Figure 5 -Refer to Figure 5. Express the overall voltage gain as a standard voltage gain

Figure 6 Assume there is no loading effect of Q2/Q3 on Q1 and RL is the load. -Refer to Figure 6. Assume R2 is open. This would cause

The measurement unit for fiac is

Figure 3 -Refer to Figure 3. Rin is approximately

Introduction to Semiconductors

Diodes and Applications

Special-Purpose Diodes

Bipolar Junction Transistors

Transistor Bias Circuits

BJT Power Amplifiers

Field-Effect Transistors Fets

Fet Amplifiers and Switching Circuits

Amplifier Frequency Response

Thyristors

The Operational Amplifier

Basic Op-Amp Circuits

Special-Purpose Integrated Circuits

Active Filters

Oscillators

Voltage Regulators

Communication Devices and Methods

Filters

Figure 6 Assume there is no loading effect of Q₂/Q₃on Q₁and R_Lis the load. -Refer to Figure 6. The total voltage gain is approximately

Figure 6 Assume there is no loading effect of Q₂/Q₃on Q₁and R_Lis the load. -Refer to Figure 6. The dc voltage across RL should be approximately

Figure 6 Assume there is no loading effect of Q₂/Q₃on Q₁and R_Lis the load. -Refer to Figure 6. Assume R2 is open. This would cause