Frequency Response of Amplifier MCQ’s

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This set of Electronic Devices & Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Frequency Response of Amplifier”.

1. STC networks can be classified into two categories: low-pass (LP) and high-pass (HP). Then which of the following is true?
a) HP network passes dc and low frequencies and attenuate high frequency and opposite for LP network
b) LP network passes dc and low frequencies and attenuate high frequency and opposite for HP network
c) HP network passes dc and high frequencies and attenuate low frequency and opposite for LP network
d) LP network passes low frequencies only and attenuate high frequency and opposite for HP network

2. Single-time-constant (STC) networks are those networks that are composed of, or can be reduced to
a) One reactive component (L or C) and a resistance (R)
b) Only capacitive component (C) and resistance (R)
c) Only inductive component (L) and resistance (R)
d) Reactive components (L, C or both L and C) and resistance (R)

3. Consider a voltage amplifier having a frequency response of the low-pass STC type with a dc gain of 60 dB and a 3-dB frequency of 1000 Hz. Then the gain db at
a) f = 10 Hz is 55 db
b) f = 10 kHz is 45 db
c) f = 100 kHz is 25 db
d) f = 1Mhz is 0 db

4. The signal whose waveform is not effected by a linear circuit is
a) Triangular Waveform signal
b) Rectangular waveform signal
c) Sine/Cosine wave signal
d) Sawtooth waveform signal

5. General representation of the frequency response curve is called
a) Bode Plot
b) Miller Plot
c) Thevenin Plot
d) Bandwidth Plot

6. When a circuit is called compensated attenuator?
a) Transfer function is directly proportional to the frequency
b) Transfer function is inversely proportional to the frequency
c) Transfer function is independent of the frequency
d) Natural log of the transfer function is proportional to the frequency

7. Which of the following is not a classification of amplifiers on the basis of their frequency response?
a) Capacitively coupled amplifier
b) Direct coupled amplifier
c) Bandpass amplifier
d) None of the mentioned

8. Under what condition can the circuit shown be called a compensated attenuator.

electronic-devices-circuits-questions-answers-frequency-response-amplifier-q7

a) C1R1 = C2R2
b) C1R2 = C2R1
c) C1C2 = R1R2
d) R1 = 0

9. Which of the following is true?
a) Coupling capacitors causes the gain to fall off at high frequencies
b) Internal capacitor of a device causes the gain to fall off at low frequencies
c) All of the mentioned
d) None of the mentioned

10. Which of the following is true?
a) Monolithic IC amplifiers are directly coupled or dc amplifiers
b) Televisions and radios use tuned amplifiers
c) Audio amplifiers have coupling capacitor amplifier
d) All of the mentioned

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