WorksheetsOscillator and waveshaping circuit
Total questions: 25
Worksheet time: 21mins
Which type of circuit is used in the oscillator?
Series fed colpitts oscillator
Shunt fed colpitts oscillator
Hartley oscillator
Crystal oscillator
What type of circuit is used?
Hartley oscillator
Colpitts oscillator
Crystal oscillator
RC phase shift oscillator
What is natural shape of a quartz crystal?
Cylindrical shape with pyramid
Cube shape
Pentagonal shape with pyramid
Hexagonal prism with pyramid at ends
What is the resonant frequency range of a crystal?
Between 0.1 and 1 MHZ
Between 0.1 and 10 MHZ
Between 0.5 and 25 MHZ
Between 0.5 and 30 MHZ
What is the difference of Colpitts oscillator compared to Hartley oscillator ?
Uses split inductor
Uses split capacitor
Uses Crystal oscillator
Uses SCR combination
Which circuit is determined by the frequency of LC tank circuit?
Oscillator
Amplifier
Multiplexed
Demodulator
How many time constants required to change a capacitor to 63.2%of its full charge voltage?
Four time constant
Three time constant
Two time constant
One time constant
Which circuits commonly use parallel fed hartley oscillators?
Stereo amplifier
Radio recievers
Television receivers
Automatic voltage stabilizers
What type of arrangement is required to sustained the oscillations of the oscillator circuit?
Provide regenerative feedback
Provide negative feedback
Increase bias voltage
Increase value of inductor
What type of waveform is produced by the series fed Hartley oscillator?
Square wave
Pulse wave
Triangular wave
Sinusoidal wave
What type of feeback is used by the Wein bridge oscillator to oscillate the signal?
No feedback
Positive feedback
Negative feedback
Both positive and negative feedback
How to improve the frequency stability in oscillator circuit?
Increase the supply voltage
By using quartz crystal
Using L and C
Improve the property of circuit
How many time constant period is required to fully charge a capcitor?
10 time constant
7 time constant
5 time constant
3 time constant
Which types of amplifier configuration used in the circuit?
Common base configuration
Common emitter configuration
Common collector configuration
Common mode configuration
Why LC tuned circuitsare not used in audio frequency oscillator?
LC values required is too large
LC components are not avialble
LC tank circuit does not produce AF signals
LC tank circuit operation requires high voltage
What are the basic components required for clipping circuits?
Diode and resistor
Transistor and diode
Diode and capacitor
Capcitor and resistor
What is the name of circuit?
Half wave rectifier
Full wave rectifier
Combination clipper
DC restorer circuit
Which circuit gives the output waveform?
Peak clipper
Combination clipper
Biased negative clipper
Biased positive clipper
Which application of the clamper circuit is used in electronics?
Radars
Radio recievers
Storage counters
Power supplies
What is the function of the circuit diagram?
Series diode clipper
Positive shunt clipper
Negative shunt clipper
Combination clipper
Which type of clipper is that a small portion of the negative hlf cycle of signal is removed?
Biased positive clipper
Biased negative clipper
Combination clipper
Positive clamper
Which circuit shapes the input signal and gives the output waveform?
Negative clamper
Positive clamper
Negative shunt clipper
positive shunt clipper
When does the biased negative clipper removes the portion of input signal?
During the positive half cycle
signal voltage is lesser
Signal voltage equal the bias battery voltage
Signal voltage becomes greater than bias battery voltage
Which circuit shapes the input signal and gives the output waveform?
Negative clamper
Positive clamper
Negative diode clipper
Positive diode clipper
Which circuit gives the output waveform?
Peak clipper
Combination clipper
Biased negative clipper
Biased positive clipper