Solid State Devices

201. What diode gives off light when energized?

1. Photodiode
2. LED
3. Photoconductive cell
4. Tunnel diode

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202. What diode has no depletion layer

1. Varactor
2. Varistor
3. Schottky diode
4. Shockley diode

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203. What electronic circuit converts AC to DC where the DC output peak value can be greater than the AC input peak value?

1. Voltage multiplier
2. Rectifier
3. Clamper
4. Clipper

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204. What extrinsic semiconductor is produced when a trivalent atom is added to the molten silicon?

1. Aluminum
2. N-type
3. P-type
4. Holes

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205. What factor is shown on a data sheet that tells how much you have to reduce the power of a device?

1. Power factor
2. Derating factor
3. Reactive factor
4. Reduction factor

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206. What happens to the photoconductive material when light strikes on it?

1. The conductivity of the material decreases
2. Nothing important happens
3. The conductivity of the material stays the same
4. The conductivity of the material increases

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207. What happens to the voltage drop across the diode when current flow increases rapidly in a forward-biased diode?

1. Increases
2. Decreases
3. Becomes zero instantly
4. Remains relatively constant

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208. What in a semiconductor is defined as the incomplete part of an electron pair bond?

1. Hole
2. Valence electron
3. Impurity
4. Ion

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209. What is also called as the conventional amplifier?

1. Common-collector circuit
2. Emitter follower circuit
3. Common base circuit
4. Common emitter circuit

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210. What is also known as photodiffusion effect?

1. Dember effect
2. Skin effect
3. Destriau effect
4. Night effect

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