Oscillators: A circuit that produces a continuous, repeated, alternating waveform without any input

This is an MCQ-based quiz on Oscillators.

This includes LC tank circuit, Biasing circuit, Transistor, Phase-shift oscillator, Hartley-oscillator, Colpitt’s oscillator, and Crystal oscillator

Start Quiz

In oscillators, loop gain is maintained to

0.5 1 1.5 2

Attenuation of Wein bridge oscillator is equals to

3 1⁄3 1⁄29 29

In an LC oscillator, the frequency of oscillator is ___________ L or C.

Proportional to square of Directly proportional to Independent of the values of Inversely proportional to square root of

Quartz crystal is most commonly used in crystal oscillators because ___________

It has superior electrical properties It is easily available It is quite inexpensive None of the above

In a certain oscillator Av = 50. The attention of the feedback circuit must be ___________

1 1 10 2

Hartley oscillator is commonly used in ___________

Radio receivers Radio transmitters TV receivers None of the above

The crystal oscillator frequency is very stable due to ___________ of the crystal

Rigidity Vibrations Low Q High Q

In an LC transistor oscillator, the active device is ……………

LC tank circuit Biasing circuit Transistor None of the above

In an LC circuit, when the capacitor is maximum, the inductor energy is ……….

Minimum Maximum Half-way between maximum and minimum None of the above

An oscillator produces……………. oscillations

Damped Undamped Modulated None of the above

An oscillator employs ……………… feedback

Positive Negative Neither positive nor negative Data insufficient

Pin 8 of 555 timer IC consist of

Voltage supply

Output

Ground

Discharge

Which of the following willprovide attenuation in feedback oscillators?

Positive feedback

Positive feedforward

Amplifier

Modulator

Voltage gain around the closed feedback loop of oscillator must equal to

−∞

∞

An oscillator converts ……………..

A.C. power into D.C. power

D.C. power into A.C. power

Mechanical power into A.C. power

None of the above

Quiz/Test Summary

Title: Oscillators: A circuit that produces a continuous, repeated, alternating waveform without any input

Questions: 15

Contributed by:

Diego Tue, Mar 01, 2022 07:56 AM UTC

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