Electronic Devices and Circuit Theory 11th Edition

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Doping is used to ________. 1) A) decrease the conductivity of an intrinsic semiconductor B) increase the insulative quality of an intrinsic semiconductor C) stabilize the conductivity of an intrinsic semiconductor D) increase the conductivity of an intrinsic semiconductor Answer: D Explanation: A) B) C) D) 2) When a p-n junction's depletion layer is

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) An op-amp integrator circuit has a 2 M input resistor and a 5 F feedback loop capacitor. If the inverting input voltage is 2 VDC, the final value of the output voltage is ________. 1) A) -20 V B) -0.2

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If this circuit is to have a voltage gain of 1, the ratio of Rf : R1 should be ________. 1) A) 2 : 1 B) 1: 2 C) 1 : 1 D) Cannot be done in theory. It can be done in practice

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Impedance matching is important for ________. 1) A) maximum power transfer from source to load B) maximum voltage transfer from source to load C) maximum impedance transfer from source to load D) maximum current transfer from source Answer: A Explanation: A) B) C) D) 2) With transformer coupling the maximum theoretical efficiency of a

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) This circuit represents a(n) ________. 1) A) totem pole, or tri-state, output B) regular output of an op-amp C) open-drain output D) open-collector output Answer: A Explanation: A) B) C) D) 2) What is the ideal output of this 741 op-amp comparator when the input is 1.5 V? 2) A) - 2

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Current-series feedback ________ the output impedance of an op-amp. 1) A) increases B) has no effect on C) reduces by half D) decreases Answer: A Explanation: A) B) C) D) 2) The feedback circuit connection shown here is ________. 2) A) voltage series feedback B) current series feedback C) current shunt feedback D) voltage shunt feedback Answer: D Explanation: A) B) C) D) 3) Current-series feedback ________ the bandwidth of an

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A voltage regulator has a dc supply voltage of 50 V when the output is unloaded. When a load is connected the output voltage is 46 V. What is the percent regulation? 1) A) 8.7% B) 92% C) 4% D) None of the above Answer: A Explanation: A) B) C) D) 2) Fold-back limiting in

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The tunnel diode region of operation between VP and VV is called the ________. 1) A) negative resistance region B) negative current region C) constant resistance region D) constant current region Answer: A Explanation: A) B) C) D) 2) In the Schottky diode, the injected carriers have a very high kinetic energy level

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A PUT has a value of VGK = +8 V. What value of VAK is needed to trigger the device into conduction? 1) A) +8.7 V B) -8.7 V C) +16.7 V D) Cannot be determined from the information given Answer: A Explanation: A) B) C) D) 2) An SCR is

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is the maximum output voltage for this clamping circuit? 1) A) - 21 Volts B) - 11 Volts C) + 21 Volts D) + 11 Volts Answer: C Explanation: A) B) C) D) 2) Generally a germanium diode is in the ________ state when the current established by the

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A BJT has measured dc current values of IB= 0.1 mA and IC= 8.0 mA. When IB is varied by 100 A, IC changes by 10 mA. What is the value of the ac for this

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) When a BJT has its base-emitter junction forward biased and its collector-base junction reverse biased, it is biased in the ________. 1) A) passive region B) saturation region C) active region D) cutoff region Answer: C Explanation: A) B) C) D) 2) When a BJT transistor is used in a switching circuit, it operates

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The feedback pair and the Darlington pair are very similar to each other. One difference between them is ________. 1) A) the feedback pair uses one npn and one pnp transistor B) there is no difference between them C) the Darlington pair uses

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) For an n-channel depletion MOSFET IDSS = 8 mA and VP= -6 V. If ID= 0.0095 A, what is the value of the gate-to-source voltage, VGS? 1) A) 0.54 V B) 0.1335 V C) -0.54 V D) 6.54 V Answer: A Explanation: A) B) C) D) 2) The region of the JFET

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) An E-MOSFET has values of VGSth = 2 V and ID(on) = 8 mA when VGS= 10 V. What is the value of k for the device? 1) A) 80 B) 0.000125 C) 0.0001 D) Cannot be determined from the information given Answer: B Explanation: A) B) C) D) 2) Which of the following

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The input impedance (Zi) of an FET is hundreds of times greater than the Zi of a BJT. This ________ effect on the overall gain of the system. 1) A) has a positive B) has a negative C) may be positive or negative

Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following is an advantage of using dB representations of gain values? 1) A) Using db values, we can represent large gain values with relatively small numbers. B) In multistage amplifiers, gain calculations are simplified by the use of