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Self-Test 1 Q&A 3-2
Self-Test Questions Volume 1
Question | Answer |
---|---|
What is the only difference between the symbols of the PNP and NPN transistors? | The direction of the arrow on the emitter lead |
Which direction does external current flow in a transistor? | Against the arrow on the emitter lead |
How is proper bias for a transistor shown on a schematic? | Schematic symbols are used to show proper bias polarities for the battery to the transistor |
What are the three basic configurations in which you can connect a transistor? | Common emitter; common base; and common collector |
What is the grounded element common to? | Both the input and output circuits |
What type of voltage is applied to a PNP transistor to satisfy the requirement for reverse bias between the collector and base? | Negative voltage |
When testing an SCR or any other electronic devices, what precautions should you take? | Ensure that you know what voltage and current levels you are dealing with |
How can an SCR be turned off in minimum time? | By reverse biasing the anode |
How are most integrated circuits produced? | By a batch-fabrication method |
What are the changes in characteristics that result from the differences in manufacture and physical size of integrated circuits? | Very few capacitors and almost no inductors are used. All Component values & voltages used are smaller than discrete circuits. Integrated circuit transistors normally will be NPN. Throw-away maintenance is used with integrated circuits |
How do you classify circuits that you use in digital equipment? | According to the types of components used in the circuit |
What are the five major classes of circuit components? | Direct logic (DL). Resistor-transistor logic (RTL). Diode-transistor logic (DTL). Transistor-transistor logic (TTL). Direct-coupled transistor logic (DCTL). |
What is one of the largest problems in all types of semiconductor operations? | Faulty connection between components and circuits |