Electronic Circuits

201. What is the time taken by the electrons or holes to pass from the emitter to the collector?

1. Transit time
2. Recombination
3. Transient time
4. Duty cycle

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202. What is the typical Q of a crystal?

1. 100
2. 50
3. 1000
4. More than 10,000

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203. What is the typical value of coupling capacitor Cc in RC coupling?

1. About 100 pF
2. About 0.1μF
3. About 10μF
4. About 0.01μF

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204. What is the typical value of the emitter bypass capacitor CE in a multistage amplifier?

1. About 0.1μF
2. About 50μF
3. About 100pF
4. About 0.01μF

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205. What is usually employed at the output stage of an amplifier?

1. Class A power amplifier
2. Push-pull amplifier
3. Pre-amplifier
4. Differential amplifier

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206. What linear circuit compares two input signals and provides a digital level output depending on the relationship of the input signals?

1. Comaparator
2. Controller
3. Compressor
4. Switch

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207. What oscillator circuit uses a tapped coil in the tuned circuit?

1. Hartley
2. Colpitts
3. Crystal
4. Pierce

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208. What oscillator is used on order to produce frequencies in the microwave region?

1. Wien bridge
2. Hartley
3. Klystron
4. Crystal

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209. What piece of equipment in an oscilloscope is used to indicate pulse condition in a digital logic circuit?

1. Probe
2. Test prods
3. Connector
4. Logic probe

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210. What represents common-emitter small signal input resistance?

1. h_ie
2. h_fe
3. h_ib
4. h_oe

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