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Analog-designs Questions Set 79:

Quiz Mode

When the input frequency is equal to the cutoff frequency, what is the phase shift in the output?

-65°

240°

185°

135°

Solution:

The gain device in the Hartley oscillator acts as a

Low pass filter

High pass filter

Band pass filter

Band rejection filter

Solution:

The statement "A rectifier with inductor filter is more efficient for high load current" is:

Incomplete

True

Partially true

False

Solution:

What is another name for a Unijunction Transistor (UJT)?

Single-base diode

Single-emitter diode

Double-base diode

Double-emitter diode

Solution:

If the current gain of an amplifier is 1000 A/A and the voltage gain is 100 V/V, find the power gain in decibels (dB).

60 dB

40 dB

50 dB

30 dB

Solution:

Which of the following statements is true for a BJT operating as a switch?

Off time = Storage time + Delay time

Off time << On time

Off time >> On time

Off time = Storage time - Rise time

Solution:

In a degenerate n-type semiconductor material, the Fermi level is located:

in the valence band

in the conduction band

at the center between the valence and conduction bands

very near the valence band

Solution:

The frequency of the Hartley oscillator is 20 kHz. The capacitor used in the feedback network has a value of 576 pF. If one of the inductor's value is 100 mH, calculate the value of the other inductor.

56.3 mH

34.8 mH

18.2 mH

9.91 mH

Solution:

If a negative feedback of β = 0.125 is added to the circuit of an RC coupled amplifier that has an open loop gain of 120 and a lower cutoff frequency of 40 Hz, find the new lower cutoff frequency of the amplifier.

2.5 Hz

16 Hz

0.4 Hz

20 Hz

Solution:

Norton's theorem states that a complex network connected to a load can be replaced with an equivalent current source in parallel with an equivalent resistance.

in parallel with a voltage source

in series with a voltage source

in parallel with a current source

in series with a current source

Analog-designs Questions Set 79:

When the input frequency is equal to the cutoff frequency, what is the phase shift in the output?

Solution:

The gain device in the Hartley oscillator acts as a

Solution:

The statement "A rectifier with inductor filter is more efficient for high load current" is:

Solution:

What is another name for a Unijunction Transistor (UJT)?

Solution:

If the current gain of an amplifier is 1000 A/A and the voltage gain is 100 V/V, find the power gain in decibels (dB).

Solution:

Which of the following statements is true for a BJT operating as a switch?

Solution:

In a degenerate n-type semiconductor material, the Fermi level is located:

Solution:

The frequency of the Hartley oscillator is 20 kHz. The capacitor used in the feedback network has a value of 576 pF. If one of the inductor's value is 100 mH, calculate the value of the other inductor.

Solution:

If a negative feedback of β = 0.125 is added to the circuit of an RC coupled amplifier that has an open loop gain of 120 and a lower cutoff frequency of 40 Hz, find the new lower cutoff frequency of the amplifier.

Solution:

Norton's theorem states that a complex network connected to a load can be replaced with an equivalent current source in parallel with an equivalent resistance.

Solution:

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