WorksheetsEC - POP QUIZ CHAP 2
Total questions: 12
Worksheet time: 6mins
An electronic Oscillator is
Just like a alternator
nothing but amplifier
An amplifier with amplifier
a converter of ac to dc energy
If Barkhausen criterion is not filled by an oscillator circuit , it will
Stop oscillating
produce damped waves continuously
becomes an amplifier
produce high frequency whistles
A transistor Hartley Oscillator uses
Resistive Feedback
Inductive Feedback
Capacitive Feedback
None of the above
A Hartley Oscillators used for generating
Very low frequency oscillation
Radio frequency oscillation
Microwave Oscillation
Audio - Frequency oscillation
A colpitts oscillator uses
Tapped Coil
Inductive feedback
Tapped capacitance
No tuned LC circuit .
A Oscillator always needs an amplifier with
Positive feedback
Negative feedback
Both type of feedback
an LC tank circuit
Which one of the following circuit is most suitable as an oscillator at a frequency of 100 Hz
Hartley Oscillators
Colpitts Oscillators
Crystal Oscillators
Wien bride Oscillator
For sustaining Oscillations in a oscillator
Feedback factor should be unity
Phase shift should be unity
Feedback should be negative
Both a and b
The Barkhausen criterion for sustained oscillation is given by
Aβ= 1
Aβ>1
Aβ<1
<Aβ=180
Colpitts oscillator is also known as
LC Oscillator
Resonant Circuit Oscillator
Tank circuit Oscillator
All of the above
An oscillator produces……………. oscillations
Damped
Undamped
Overdamped
Modulated
In a phase shift oscillator, we use …………. RC sections
1
2
3
4
