DIODE RECTIFIER FILTER ZENER DIODE TRANSISTOR - Practice Mode

1) What is the meaning of first letter indicated in the transistor code number BC 107?

Germanium material used Silicon material used Antimony material used Indium material used

Correct Answer: Silicon material used

2) Which electrical quantity controls the operation of the bipolar transistor device?

Energy Current Voltage Frequency

Correct Answer: Current

3) Why transistors made of silicon is preferred over the germanium semiconductor material?

Complex design Higher thermal stability Requires complicated bias arrangement Silicon transistor needs low cut-involtage

Correct Answer: Higher thermal stability

4) Why NPN type of transistors are preferred over the PNP type transistors?

NPN has lower switching speed NPN has good bias stability NPN has higher switching speed Low operating voltage

Correct Answer: NPN has higher switching speed

5) Which type of transistors are required to amplify signals from the microphone / transducer?

Low power transistors Medium power transistors High power transistors Epitaxial versa watt transistors

Correct Answer: Low power transistors

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