Electronic Circuits

171. What is a non-linear type of amplifier?

1. Class C
2. Class AB
3. Class B
4. Class A

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172. What is the advantage of RC coupling scheme?

1. Good impedance matching
2. Economy
3. High efficiency
4. Simplicity

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173. What is the approximate gain of an amplifier with negative feedback?

1. The feedback factor
2. The reciprocal of feedback factor plus one
3. The reciprocal of feedback factor
4. The feedback factor plus one

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174. What is the axis that connects the corners of a crystal?

1. X
2. Mechanical
3. y
4. Z

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175. What is the basic purpose of applying negative feedback to an amplifier?

1. To increase gain
2. To reduce distortion
3. To keep the temperature within limits
4. To increase input signal

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176. What is the desired input impedance of a transistor?

1. Low
2. Very low
3. High
4. Very high

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177. What is the device in a transistor oscillator?

1. LC tank circuit
2. Biasing circuit
3. Transistor
4. Feedback circuit

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178. What is the disadvantage of impedance matching?

1. It gives distorted output
2. It requires a transformer
3. It gives low power output
4. It is expensive

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179. What is the gain of an amplifier with negative feedback if the feedback factor is 0.01?

1. 10
2. 1000
3. 100
4. 500

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180. What is the ideal maximum voltage gain of a common collector amplifier?

1. Unity
2. Infinite
3. Indeterminate
4. Zero

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