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Electronics & Communication Engineering - Electronics Devices and Circuits

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13.

The differential amplifier has

A.	one input and two outputs	B.	one input and one output
C.	two inputs and two outputs	D.	two inputs and one output

14.

The emitter-follower configuration has a ________ impedance at the input and a ________ impedance at the output.

A.	high, high	B.	high, low
C.	low, high	D.	low, low

15.

The differential amplifier produces outputs that are

A.	the difference of the two input voltages	B.	the sum of the two input voltages
C.	in-phase with the input voltages	D.	common mode

16.

The ________ configuration is frequently used for impedance matching.

A.	fixed-bias	B.	emitter-follower
C.	collector feedback	D.	voltage-divider bias

17.

In a common-base amplifier, the input signal is connected to the

A.	base	B.	output
C.	emitter	D.	collector

18.

For the common-emitter amplifier ac equivalent circuit, all capacitors are

A.	effectively shorts	B.	connected to groun
C.	effectively open circuits	D.	not connected to groun

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