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Analog-designs Questions Set 65:

Quiz Mode

What is the typical maximum efficiency range of a class B amplifier?

25%

35%

35% to 50%

50% to 70%

Solution:

For a transconductance amplifier, the output resistance with feedback, R_of, is:

zero always

∞ always

R_o

R_o.(1+Aβ)

R_o/(1+Aβ)

Solution:

Which of the following transistor biasing circuits showcases the better performance?

Fixed Bias

None

Collector-to-Base Bias

Self-Bias

Solution:

Find the ratio of final reverse saturation current to initial reverse saturation current if the change in temperature is 20°C.

0.5

0.25

Solution:

An amplifier has a voltage gain of 100 V/V and a current gain of 1000 A/A. What is the value of the power gain in decibels (dB)?

30 dB

40 dB

50 dB

60 dB

Solution:

An amplifier has output impedance Z_o = 5 kΩ, voltage gain A = 100, and feedback factor B = 0.02. Find the output impedance of the feedback amplifier.

10 kΩ

1.12 kΩ

1.67 kΩ

1.89 kΩ

Solution:

Transconductance is the ratio of:

Change in drain current to change in gate voltage.

Change in drain current to change in drain voltage.

Change in gate current to change in gate voltage.

Change in gate current to change in source voltage.

Solution:

In a bipolar junction transistor (BJT), if the collector-base junction is reverse-biased and the base-emitter junction is forward-biased, which region is the BJT operating in?

Saturation region

Active region

Cutoff region

Reverse active region

Solution:

How does the lower cutoff frequency change with cascading of amplifiers?

The lower cutoff frequency increases with cascading

The lower cutoff frequency decreases with cascading

The lower cutoff frequency sometimes changes with cascading

Cascading does not affect the lower cutoff frequency

Solution:

A certain network consists of a large number of ideal linear resistors, one of which is R, and two constant ideal sources. The power consumed by R is P1 when only the first source is active, and P2 when only the second source is active. If both sources are active simultaneously, then the power consumed by R is

P1+-P2

(√P1 +- √P2)²

√P1 +- √P2

(P1+-P2)²

Analog-designs Questions Set 65:

What is the typical maximum efficiency range of a class B amplifier?

Solution:

For a transconductance amplifier, the output resistance with feedback, R_of, is:

Solution:

Which of the following transistor biasing circuits showcases the better performance?

Solution:

Find the ratio of final reverse saturation current to initial reverse saturation current if the change in temperature is 20°C.

Solution:

An amplifier has a voltage gain of 100 V/V and a current gain of 1000 A/A. What is the value of the power gain in decibels (dB)?

Solution:

An amplifier has output impedance Z_o = 5 kΩ, voltage gain A = 100, and feedback factor B = 0.02. Find the output impedance of the feedback amplifier.

Solution:

Transconductance is the ratio of:

Solution:

In a bipolar junction transistor (BJT), if the collector-base junction is reverse-biased and the base-emitter junction is forward-biased, which region is the BJT operating in?

Solution:

How does the lower cutoff frequency change with cascading of amplifiers?

Solution:

Solution:

Related Question Sets:

Related Topics:

Analog-designs Questions Set 65:

What is the typical maximum efficiency range of a class B amplifier?

Solution:

For a transconductance amplifier, the output resistance with feedback, Rof, is:

Solution:

Which of the following transistor biasing circuits showcases the better performance?

Solution:

Find the ratio of final reverse saturation current to initial reverse saturation current if the change in temperature is 20°C.

Solution:

An amplifier has a voltage gain of 100 V/V and a current gain of 1000 A/A. What is the value of the power gain in decibels (dB)?

Solution:

An amplifier has output impedance Zo = 5 kΩ, voltage gain A = 100, and feedback factor B = 0.02. Find the output impedance of the feedback amplifier.

Solution:

Transconductance is the ratio of:

Solution:

In a bipolar junction transistor (BJT), if the collector-base junction is reverse-biased and the base-emitter junction is forward-biased, which region is the BJT operating in?

Solution:

How does the lower cutoff frequency change with cascading of amplifiers?

Solution:

Solution:

Related Question Sets:

Related Topics:

For a transconductance amplifier, the output resistance with feedback, R_of, is:

An amplifier has output impedance Z_o = 5 kΩ, voltage gain A = 100, and feedback factor B = 0.02. Find the output impedance of the feedback amplifier.