191. The maximum frequency of oscillation of a transistor is limited by the consideration of:

1. 1. capacitive effects of transistor

   
   
   

   2. heating effects of transistor

   
   
   

   3. mechanical vibrations of transistor

   
   
   

   4. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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192. Oscillator generally used to generate RF is:

1. 1. RC phase shift oscillator

   
   
   

   2. Hartley oscillator

   
   
   

   3. Wien bridge oscillator

   
   
   

   4. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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193. Which oscillator uses a tapped coil in its tank circuit?

1. 1. Hartley oscillator

   
   
   

   2. Colpitts oscillator

   
   
   

   3. Wien-bridge oscillator

   
   
   

   4. RC phase shift oscillator

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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194. Which oscillator is characterised by a split capacitor in its tank circuits?

1. 1. Wien bridge oscillator

   
   
   

   2. Colpitts oscillator

   
   
   

   3. RC phase shift oscillator

   
   
   

   4. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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195. The frequency of oscillations in a Wien bridge oscillator given by:

1. 1. 1

      2πRC

   
   
   

   2. 1

      2π √RC

   
   
   

   3. 1

      √2πRC

   
   
   

   4. 1

      2πR √C

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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