ANALOG ELECTRONICS QUIZ

The per unit impedance of a synchorous machine is 0.242. If base voltage is increased by 1.1 times, then per unit value will be

0.200.

0.266.

0.220.

0.242.

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When VGS = 0 V, a JFET is

an open switch.

cut off.

an analog device.

saturated.

TRUE ANSWER : ?
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What does MOS stand for?

Metal - on silicon.

None of them.

Metal - oxide silicon.

Metal - oxide semiconductor.

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Secondary breakdown occures in

None of these.

BJT but not is MOSFET.

Both BJT and MOSFET.

MOSFET but not in BJT.

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In the active region, the collector current is not changed significantly by

collector resistance.

base current.

current gain.

base supply voltage.

TRUE ANSWER : ?
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The leakage electric current of a pn junction is caused by

barrier potential.

majority carriers.

heat energy.

chemical energy.

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The following relationship between ÃŽÂ± and ÃŽÂ² are correct except

ÃŽÂ² = ÃŽÂ± / (1 - ÃŽÂ±).

ÃŽÂ± = ÃŽÂ² / (1 - ÃŽÂ²).

1 - ÃŽÂ± = 1 / (1 + ÃŽÂ²).

ÃŽÂ± = ÃŽÂ² / (1 + ÃŽÂ²).

TRUE ANSWER : ?
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Leakage electric current in CE configuration is

not present.

normal.

very high.

very small.

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What will be the result if pentavalent impurity is added to pure germanium or silicon ?

Intrinsic semiconductor

None of these

N-type semiconductor

P-type semiconductor

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The trapped energy of an inductive load can be feed back to the input supply through a diode known as

Powe diode.

None of these.

Feed back diode.

Zener diode.

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