Oscillator Circuit Design Quiz

This video tutorial explains how to design an oscillator circuit using NPN and PNP transistors. It covers the characteristics of these transistors, the role of resistors, capacitors, and transformers in the circuit, and how these components affect frequency and power consumption. The video also discusses the relationship between capacitance and frequency, the impact of resistor R1 on frequency stability, and how load resistance influences frequency output. Finally, it addresses power consumption and circuit stability considerations.

What is the main difference between an NPN and a PNP transistor?

• The type of material used

• The number of terminals

• The direction of the arrow in the symbol

• The voltage rating

What type of transformer is used in the oscillator circuit?

• Step-down transformer

• Step-up transformer

• Isolation transformer

• Auto transformer

How does increasing the capacitance affect the frequency in the circuit?

• Frequency increases

• Frequency becomes unstable

• Frequency remains constant

• Frequency decreases

Which formula represents the frequency in an LC circuit?

• 1 over 2 pi RC

• 1 over 2 pi times the square root of LC

• 2 pi RC

• 2 pi times the square root of LC

What happens to the frequency when R1 is decreased?

• Frequency remains the same

• Frequency becomes zero

• Frequency decreases

• Frequency increases

How does the load resistance affect the frequency when it is decreased?

• Frequency remains constant

• Frequency becomes zero

• Frequency decreases

• Frequency increases

What is the effect of a high current flowing through the transistors?

• It improves efficiency

• It can damage the components

• It reduces power consumption

• It stabilizes the frequency

What is the approximate current drawn from the battery when the load resistance is infinity?

• 50 milliamps

• 150 milliamps

• 75 milliamps

• 100 milliamps

What happens to the current drawn from the battery when a 10 kilo ohm resistor is used?

• It increases significantly

• It decreases significantly

• It remains the same

• It becomes zero

What was the measured voltage of the battery used in the circuit?

• 6 volts

• 5.5 volts

• 4.5 volts

• 5 volts