221. In a Wien Bridge oscillator, a FET is included in the feedback loop:

1. 1. This is to obtain highly precision frequency

   
   
   

   2. This is to stabilize the amplifier loop gain

   
   
   

   3. This is to make it a high frequency oscillator

   
   
   

   4. This is to operate the amplifier in class C condition

   
   
   

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   NA

   Correct Option: B

   NA

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222. In a crystal oscillator of the colpitts oscillator type, the crystal:

1. 1. Resistor R₁

   
   
   

   2. Condenser C₂

   
   
   

   3. Condenser C₁

   
   
   

   4. Inductor L

   
   
   

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   NA

   Correct Option: D

   NA

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223. In a Wien bridge oscillator the RC elements of the bridge provide a:

1. 1. positive feedback

   
   
   

   2. negative feedback

   
   
   

   3. negative feedback at low frequencies

   
   
   

   4. no feedback

   
   
   

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   NA

   Correct Option: A

   NA

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224. The basic amplifier in Wien Bridge oscillator consists of:

1. 1. CE state followed by CC

   
   
   

   2. CE stage followed by CB

   
   
   

   3. CB state followed by CE

   
   
   

   4. CC stage followed by CE

   
   
   

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   NA

   Correct Option: A

   NA

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225. A Wien-bridge oscillator is a:

1. 1. VHF oscillator

   
   
   

   2. RF oscillator

   
   
   

   3. Microwave oscillator

   
   
   

   4. Audio frequency oscillator.

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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