Oscillator and waveshaping circuit

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