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You Are On Multi Choice Question Bank SET 1010

50501. What is the controlling current in a common-base configuration?

50502. Which of the following techniques can be used in the sinusoidal ac analysis of transistor networks?

50503. The input impedance of a BJT amplifier is purely ________ in nature and can vary from a few ________ to ________.

50504. The ________ the source resistance and/or ________ the load resistance, the less the overall gain of an amplifier.

50505. Refer to this figure. If an emitter bypass capacitor was installed, what would the new Av be?

50506. A Darlington pair provides beta ________ for ________ input resistance.

50507. A Darlington pair amplifier has

50508. In a fixed-bias network, the input signal Vi is applied to the ________ of the transistor while the output Vo is off the ________.

50509. In an emitter-follower, the voltage gain is ________.

50510. In an unbypassed emitter-bias configuration ________ replaces re in the hybrid equivalent circuit.

50511. The feedback pair uses a(n) ________ transistor driving a(n) ________ transistor, the two devices acting effectively much like one pnp transistor.

50512. In a hybrid equivalent circuit, ________ is determined to make it easier to find the other parameters.

50513. The input and output signals are ________ for the typical transistor amplifier at frequencies that permit ignoring the effects of the reactive elements.

50514. ________ is slightly affected if the condition ro 10RE is not satisfied in the analysis of an emitter-follower configuration.

50515. The dc load line and ac load line both have the same ________ .

50516. The ________ the level of RL, the ________ the level of ac voltage gain.

50517. The coupling capacitor places the load and collector resistors in a ________ arrangement.

50518. In a voltage-divider bias configuration, the voltage-divider equation is used to determine the ________.

50519. The ________ of the input signal is one of the first concerns in the sinusoidal ac analysis of transistor networks.

50520. The ________ model(s) is (are) commonly used in the small-signal ac analysis of transistor networks.

50521. In a voltage-divider bias configuration, there can be a measurable difference in the results for ________ if the condition ro 10RC is not satisfied.

50522. The level of re is determined by ________.

50523. The ________ the source resistance, the ________ the overall gain of an amplifier.

50524. In a common-base configuration, the input and output voltages are ________ and the output and input currents are ________.

50525. Ideally, the changes in the load resistor or the source resistor should have ________ effect on all the parameters of the two-port model.

50526. The ac voltage gain of a Darlington connection is about ________.

50527. One junction of an operating transistor is ________ and the other one is ________.

50528. The output voltage and the input voltage are ________ for the common-base configuration.

50529. A common-base configuration has ________ impedance at the input and ________ impedance at the output.

50530. In a common-emitter configuration ________ is the controlling current while ________ is the controlled current.

50531. For the common-emitter and common-base configurations, the magnitude of ________ and ________ is often not included in the model.

50532. An emitter-follower has ________ impedance at the input and ________ impedance at the output.

50533. ________ refers to the forward transfer current ratio.

50534. For transistor amplifiers, the no-load voltage gain is ________ the loaded voltage gain.

50535. The peak value of the ac input signal is controlled by the ________ in a transistor network for the frequencies in the low to midrange.

50536. In an emitter-follower, the output voltage is ________ with the input voltage.

50537. ________ can be applied to determine the response of the ac equivalent circuit.

50538. The bypass capacitor in a common-emitter configuration ________ the voltage gain.

50539. The loaded voltage gain of an amplifier is ________ the no-load level.

50540. The common-emitter configuration has a ________ level of input impedance with a ________ voltage and current gain.

50541. For a common-base configuration, the input impedance is relatively ________ and the output impedance quite ________.

50542. The output voltage and the input voltage are ________ for the common-emitter configuration.

50543. AC current ratios ac and ac convert directly from h parameters.

50544. Besides the fact that DC = IC/IB and ac = IC/IB, these quantities are always the same for purposes of small-signal amplification.

50545. r'e is temperature dependent.

50546. A common-collector amplifier has high input impedance, good current gain, and a voltage gain of 1.

50547. The total voltage gain of a multistage amplifier is the product of the individual stage gains.

50548. A Darlington pair provides a very low input impedance.

50549. The output resistance of the common-emitter amplifier is approximately equal to the collector resistance.

50550. A coupling capacitor couples dc to an amplifier.

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