Post-Test Week 3

What are the applications of LC Oscillator?

• Sine wave generator

• Radio Recievers

• Radio Transmitter

• High Voltage Power Supply

Colpitts oscillator consists of _____ capacitor and _______ inductor

• one, one

• one, two

• two, two

• two, one

Crystals in Oscillators are made using?

• Gold

• Quartz

• Silver

• Mercury

Quartz crystal works on the principle of?

• Piezo electric Effect

• Piezo resistive Effect

• Piezo capacitive Effect

• Piezo inductive Effect

In the phase-shift oscillator, the gain of the amplifier stage must be _______.

• 0

• less than 29

• greater than 29

• ∞

In the phase-shift oscillator, the operating frequency is determined by _______.

• resistance only

• capacitance only

• LC combinations

• RC combinations

In the Colpitts oscillator, the frequency is determined by _______ .

• resistance only

• inductance only

• capacitance only

• both inductance and a capacitance

All the basic oscillator circuit consists of three parts:

• Transformer, Rectifier and Filter

• Capacitor, Inductor and Resistor

• Amplifier, Feedback and Frequency Generation Circuit

• AM, FM and RF

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

Different types of oscillators produce various types of outputs except

• sinusoidal wave

• sawtooth wave

• triangular wave

• mexican wave