86. The level of re is determined by ________.
(a) a
(b) IE
(c)
(d) IB
87. In a voltage-divider bias configuration, the voltage-divider equation is used to determine the ________.
(a) ac level of Vb
(b) dc level of IB
(c) dc level of VB
(d) ac level of Ib
88. ________ refers to the forward transfer current ratio.
(a) hi
(b) hr
(c) hf
(d) ho
89. For the common-emitter and common-base configurations, the magnitude of ________ and ________ is often not included in the model.
(a) hr, ho
(b) hi, he
(c) hi, hr
(d) he, ho
90. The ________ the source resistance, the ________ the overall gain of an amplifier.
(a) larger, higher
(b) larger, lower
(c) lower, lower
(d) None of the above
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BJT Amplifiers » Exercise - 1 1. Nota 2. The dc emitter current of a transistor is 8 mA. What is the value of re? (a) 320 (b) 13.3 k (c) 3.125 (d) 5.75 3. What is the most important r parameter for amplifier analysis? (a) rb (b) rc (c) (d) 4. Which of the h-parameters corresponds to re in a common-base configuration? (a) hib (b) hfb (c) hrb (d) hob 5. Under which of the following conditions is the output impedance of the network approximately equal to RC for a common-emitter fixed-bias configuration? (a) ro 10RC (b) ro 2 10RC (c) ro 2 ro (d) ro 4 ro 6. What is the unit of the parameter ho? (a) Volt (b) Ohm (c) Siemen (d) No unit 7. Which of the following gains is less than 1 for a common-base configuration? (a) Ai (b) Av (c) Ap (d) None of the above 8. Which of the following configurations has the lowest output impedance? (a) Fixed-bias (b) Voltage-divider (c) Emitter-follower (d) None of the above 9. Which one of the following configurations has the lowest input impedance? (a) Fixed-bias (b) Common-base (c) Emitter-follower (d) Voltage-divider? 10. The current gain for the Darlington…