EASA 147 M-04 Electronic Fundamentals.docx_1427349632207.pdf

Saw tooth signal 78what is the funcon of potenometer

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- Saw tooth signal. 78.What is the func±on of poten±ometer? - Varies the gain. 79.What is the advantage of using TTL integrate circuit? - High speed. 80.Two resistor in series, - AND gate.
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81.When op-amp connects in series, the main purpose is? - Provide a prac±cal loading on successive amplifier stage. 82.Which family of IC consumes less power, CMOS or TTL? Which has a higher speed? - CMOS consumes less power. TTL has higher speed. 83.The main property of the open loop servo system? - No signal will feedback to input. 84.What is the effect of the nega±ve feedback? - Feedback is an±-phase to input. 4.1.2 85.With respect to a transistor an amplifier, the load line gives A. The value of the collector voltage at 10mA collector current at full-load B. The value of the collector current at 50%, open circuit collector voltage at no load. C. The effect of a load resistor on the opera±on of transistor. 86.The output (Q) of RS flip-flop 87.For a class A inductor-coupled transistor, A. The DC current can flow through the large inductor B. The inductor presents small impedance to AC signal C. The collector is an AC ground 88.The push-pull method of connec±ng two transistor make it possible to
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89.For a nega±ve series-voltage feedback amplifier, the nega±ve feedback A. Improve the amplifica±on ra±o and make it independent of temperature B. Allow the characteris±c of basic amplifier to deac±vate C. Ensure the signal gain is stable and rela±vely independent of component aging problem 90.If two sine waves inputs with opposite phase apply to an ideal differen±al amplifier, the output will be? 91.Field effect transistor has characteris±c A. High input impedance B. High output impedance C. Low input impedance 92.The connec±on of transistors in a circuit is considered by 93.Which one is used for coupling? 94.The advantage of nega±ve feedback
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  • Fall '19
  • Input impedance, Bipolar junction transistor, Electrical parameters, EMI

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