156. Clampers circuits are also known as:

1. 1. ac restores

   
   
   

   2. dc restorers

   
   
   

   3. voltage to frequency converters

   
   
   

   4. sweep circuits

   
   
   

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1. View Hint View Answer Discuss in Forum

   Clampers circuits are also known as dc restorers.

   Correct Option: B

   Clampers circuits are also known as dc restorers.

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157. A common emitter amplifier is characterized by:

1. 1. low voltage gain

   
   
   

   2. moderate power gain

   
   
   

   3. signal phase reversal

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   Output of a common emitter amplifier is 180° out off phase with input.

   Correct Option: C

   Output of a common emitter amplifier is 180° out off phase with input.

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158. A Zener diode is used as a:

1. 1. current regulator

   
   
   

   2. voltage booster

   
   
   

   3. voltage regulator

   
   
   

   4. power regulator

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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159. A Zener diode is operated in the:

1. 1. forward-bias

   
   
   

   2. reverse-bias

   
   
   

   3. breakdown region

   
   
   

   4. neither in forward nor in reverse-bias

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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160. In full-wave rectification, if the input frequency is 50 Hz, then frequency at the output of filter is:

1. 1. 50 Hz

   
   
   

   2. 0 Hz

   
   
   

   3. 200 Hz

   
   
   

   4. 75 Hz

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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