Worksheetssignal generators using op-amp
Total questions: 10
Worksheet time: 10mins
How a triangular wave generator is derived from square wave generator?
Connect oscillator at the output
Connect Voltage follower at the output
Connect differential at the output
Connect integrator at the output
The increase in the frequency of triangular wave generator.
Ramp the amplitude of triangular wave
Increase the amplitude of triangular wave
Decrease the amplitude of triangular wave
None of the mentioned
What is the peak to peak (PP) output amplitude of the triangular wave?
VO(pp) = + VRamp + (- VRamp)
VO(pp) = – VRamp + (+ VRamp)
VO(pp) = + VRamp – (- VRamp)
VO(pp) = – VRamp – (+ VRamp)
Triangular wave form has
Rise time < fall time
Rise time = fall time
Rise time ≥ fall time
None of the mentioned
Output of an integrator producing waveforms of unequal rise and fall time are called
Triangular waveform
Sawtooth waveform
Pulsating waveform
Spiked waveform
Rc phase shift oscillator will not produce oscillations until the gain on op-amp circuit is
more than 3 but less than 10
less than 20
more than 29
all of the above
A Wien bridge oscillator uses ……………. feedback
Only positive
Only negative
Both positive and negative
None of the above
In a RC phase shift oscillator if R=3.2Kohm and C=0.01uF then frequency of oscillations generated is
1KHz
10KHz
2KHz
20KHz
To get sustained oscillations from oscillator
∣Aβ∣≥1
θ=360°
θ=0°
All of the above are correct
To change the frequency of oscillations in Phase shift oscillator
Rf should be changed
R1 should be changed
RC should be changed
None of the above
