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Electronics & Communication Engineering - Electronics Devices and Circuits

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25.

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

A.	larger, larger	B.	larger, smaller
C.	smaller, smaller	D.	smaller, larger

26.

A Darlington pair amplifier has

A.	a voltage gain of about 1 and a low input impedance	B.	high input impedance and high voltage gain
C.	a low voltage gain and a high input impedance	D.	low input impedance and low voltage gain

27.

Which of the following configurations has the lowest output impedance?

A.	Fixed-bias	B.	Voltage-divider
C.	Emitter-follower	D.	None of the above

28.

Which of the h-parameters corresponds to rein a common-base configuration?

A.	hib	B.	hfb
C.	hrb	D.	hob

29.

Which of the following is referred to as the reverse transfer voltage ratio?

A.	hi	B.	hr
C.	hf	D.	ho

30.

Which of the following conditions must be met to allow the use of the approximate approach in a voltage-divider bias configuration?

A.	βre > 10R2	B.	βRE > 10R2
C.	βRE < 10R2	D.	βre < 10R2

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