ANALOG ELECTRONICS QUIZ

The barrier potential across each silicon depletion layer is

0.3 V.

0 V.

1 V.

0.7 V.

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In the constant-current region, how will the IDS change in an n-channel JFET?

As VGS decreases ID remains constant.

As VGS increases ID increases.

As VGS decreases ID decreases.

As VGS increases ID remains constant.

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For a reverse biased pn junction, the electric current through the junction increases abruptly at

breakdown voltage.

0.2 eV.

0 V.

7.2 eV.

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What is the charge of mobile charge carriers of holes ?

Positively charged

None of these

No charged

Negatively charged

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A JFET can operate in

enhancement mode only.

none of these.

depletion mode only.

depletion and enhancement mode only.

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The opamp can amplify

DC signals only.

AC signals only.

neither AC not DC signals.

both AC and DC signals.

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An n- channel JFET has IDSS=2mA,and Vp=-4v.Its transconductance gm=in mA/V)for an applied gate to source voltage VGS=-2v is

1

0.75

0.25

0.5

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What is the range of energy band gap of semiconductors ?

10-15 ev

0 ev

14-15 ev

1-3 ev

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In CE configuration, the input V-I characteristics are drawn by taking

VBE versus IB for constant value of IC.

VBE versus IE for constant value of VCE.

VBE versus IB for constant value of VCE.

VCE versus IC for constant value of IE.

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A diode (p-n junction) when reverse biased act as

Off Switch

On Switch

Capacitor

Zener diode

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