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Electronics & Communication Engineering - Electronics Devices and Circuits

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The advantage that a Sziklai pair has over a Darlington pair is

A.	higher voltage gain	B.	higher current gain
C.	higher input impedance	D.	less input voltage is needed to turn it on

What is the range of the current gain for BJT transistor amplifiers?

A.	less than 1	B.	1 to 100
C.	above 100	D.	All of the above

What does the negative sign in the voltage gain of the common-emitter fixed-bias configuration indicate?

A.	The output and input voltages are 180° out of phase	B.	Gain is larger than 1
C.	Gain is smaller than 1	D.	None of the above

10.

For the common-emitter fixed-bias configuration, there is a ________ phase shift between the input and output signals.

A.	0°	B.	45°
C.	90°	D.	180°

11.

Which one of the following configurations has the lowest input impedance?

A.	Voltage-divider?	B.	Emitter-follower
C.	Common-base	D.	Fixed-bias

12.

Which of the following represent(s) the advantage(s) of the system approach over the r-model approach?

A.	Thevenin's theorem can be use	B.	There is no need to go back to the ac equivalent model and analyze the entire network
C.	The effect of changing the load can be determined by a simple equation	D.	All of the above

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