176. A monostable multivibrator requires:

1. 1. no driving pulse

   
   
   

   2. one driving pulse for generation of each cycle of wave form

   
   
   

   3. two driving pulses for generation of each cycle of wave form

   
   
   

   4. four driving pulses for generation of each cycle of wave form

   
   
   

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   NA

   Correct Option: B

   NA

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177. A multivibrator can be used as a:

1. 1. cavity resonator

   
   
   

   2. harmonic generator

   
   
   

   3. waveform modifier

   
   
   

   4. any of these

   
   
   

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   NA

   Correct Option: B

   NA

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178. A Wein bridge oscillator generates oscillations only if the gain of the two stage amplifier is:

1. 1. less than unity

   
   
   

   2. unity

   
   
   

   3. more than 3

   
   
   

   4. less than 3

   
   
   

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   NA

   Correct Option: C

   NA

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179. An RC phase-shift oscillator will not produce any oscillation until and unless the voltage gain of its internal amplifier is:

1. 1. unity

   
   
   

   2. less than unity

   
   
   

   3. around 12

   
   
   

   4. more than 29

   
   
   

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   NA

   Correct Option: D

   NA

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180. An oscillator that is most stable having simple circuit is:

1. 1. Armstrong oscillator

   
   
   

   2. Crystal oscillator

   
   
   

   3. Clapp oscillator

   
   
   

   4. Colpitts oscillator

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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