Electronics questions | form six Physics
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# | Question |
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1 | List three types of transistor configurations. Short answers |
2 | Why is collector of a transistor made wider than emitter and base? Short answers |
3 | A change of 100μA in the base current produces a change of 3mA in the collector current. Mathematical Calculation |
4 | What is the importance of doping as applied to semiconductors? Short answers |
5 | Distinguish between n–type and p–type semiconductors. Give three points. Short answers |
6 | Why are transistors mostly used in common emitter arrangement? Short answers |
7 | When does a transistor amplifier work as an oscillator? Short answers |
8 | Explain the use of an op-amp as a summing amplifier. Short answers |
9 | Figure 2 is an operational amplifier circuit where R1=39kΩ, R2=4.7kΩ, R3=10kΩ and R4=2.7kΩ. Calculate the output potential V0 given that the input voltage V1=4.0V, V2 = −2.5V and Mathematical Calculation |
10 | Name three electronic circuits in which multivibrators can be constructed. Short answers |