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You Are On Multi Choice Question Bank SET 1012

50601. For the RC-coupled amplifier, the drop in gain at low frequencies is due to the increasing reactance of ________.





50602. The logarithm of a number ________ than 1 is always ________.





50603. The ________ in the Fourier series has the same frequency as the square wave itself.





50604. In the input RC circuit of a single-stage BJT or FET amplifier, as the frequency ________, the capacitive reactance ________ and ________ of the input voltage appears across the output terminals.





50605. The ________ configuration displays improved high-frequency characteristics over the ________ configuration.





50606. At very high frequencies, the effect of Ci is to ________ the total impedance of the parallel combination of R1, R2, R3, and Ci.





50607. The decibel (dB) is defined such that ________ decibel(s) = ________ bel(s).





50608. Logarithms taken to the base ________ are referred to as common logarithms, while logarithms taken to the base ________ are referred to as natural logarithms.





50609. A change in frequency by a factor of 10 results in a ________ change in the ratio of the normalized gain.





50610. For any inverting amplifier, the impedance capacitance will be ________ by a Miller effect capacitance sensitive to the gain of the amplifier and the interelectrode capacitance.





50611. The ________ of the upper cutoff frequencies defines a ________ possible bandwidth for a system.





50612. A change in frequency by a factor of ________ is equivalent to 1 octave.





50613. What is the ratio of the capacitive reactance XCS to the input resistance RI of the input RC circuit of a single-stage BJT amplifier at the low-frequency cutoff?





50614. For which of the following frequency region(s) can the coupling and bypass capacitors no longer be replaced by the short-circuit approximation?





50615. Determine the lower cutoff frequency of this network.





50616. The smaller capacitive elements of the design will determine the ________ cutoff frequencies.




50617. A transistor can be checked using a(n) ________.





50618. What range of resistor values would you get when checking a transistor for forward- and reverse-biased conditions by an ohmmeter?





50619. Calculate minority current ICO if IC = 20.002 mA and IC majority = 20 mA.





50620. What is (are) the component(s) of electrical characteristics on the specification sheets?





50621. In which region are both the collector-base and base-emitter junctions forward-biased?





50622. An example of a pnp silicon transistor is a 2N4123.



50623. Which of the following is (are) the terminal(s) of a transistor?





50624. Use this table of collector characteristics to calculate ac at VCE = 15 V and IB = 30 A.





50625. Which of the following configurations can a transistor set up?





50626. What does a reading of a large or small resistance in forward- and reverse-biased conditions indicate when checking a transistor using an ohmmeter?





50627. Determine the value of when = 100.





50628. Transistors are ________-terminal devices.





50629. Calculate dc at VCE = 15 V and IB = 30 A.





50630. Which of the following can be obtained from the last scale factor of a curve tracer?





50631. Calculate ac for IC = 15 mA and VCE = 5 V.





50632. dc = ________





50633. How many carriers participate in the injection process of a unipolar device?





50634. What are the ranges of the ac input and output resistance for a common-base configuration?





50635. What is the most frequently encountered transistor configuration?





50636. dc for this set of collector characteristics is within ________ percent of ac.





50637. Which of the following regions is (are) part of the output characteristics of a transistor?





50638. How many individual pnp silicon transistors can be housed in a 14-pin plastic dual-in-line package?





50639. In what decade was the first transistor created?





50640. Most specification sheets are broken down into ________.





50641. For a properly biased pnp transistor, let IC = 10 mA and IE = 10.2 mA. What is the level of IB?





50642. What is (are) the component(s) of most specification sheets provided by the manufacturer?





50643. What is dc equal to?





50644. List the types of bipolar junction transistors.





50645. What is the ratio of the total width to that of the center layer for a transistor?





50646. Which component of the collector current IC is called the leakage current?





50647. The term bipolar reflects the fact that ________ and ________ participate in the injection process into the oppositely polarized material.





50648. In the saturation region the collector-base junction is ________-biased and the base-emitter junction is ________-biased for a transistor.





50649. The step function (per step) of a curve tracer reveals the scale for ________.





50650. The base current is the ________ of the emitter and collector currents.





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