Home
Class 12
PHYSICS
A transistor oscillator is (i) an amplif...

A transistor oscillator is (i) an amplifier with positive feedback (ii) an amplifier with reduced gain (iii) the one in which dc supply energy is converted into ac output energy . Then

A

A) all (i) , (ii) and (iii) are correct

B

B) only (i) and (ii) are correct

C

C) only (i) and (iii) are correct

D

D) only (ii) and (iii) are correct

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise PREVIOUS YEAR QUESTIONS|3 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|26 Videos

  • WAVE OPTICS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|17 Videos

Similar Questions

Explore conceptually related problems

State whether true or false and justify . a Zener diodes are used under forward bias. b. In n-p-n transistor , current conduction is primarily due to electrons . c. Transistor amplifiers do not strictly obey law of conservation of energy since output power is greater than input power . d. In a transistor amplifier all the frequency will have exactly equal gain .

Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. (ii) Removal of most of the carnivores resulted in an increased population of deers. (iii) The lenght of food chains is generally limited to 3-4 trophic levels due to energy loss. (iv) The lenght of food chains may vary from 2 to 8 trophic levels. A) i and ii B) ii and iii C) i and iii D) iii and iv

Which of the following statements are correct? (i) Helium has the highest first ionisation enthalphy (ii) Chlorine has less electron affinity than fluorine (iii) Ne has more ionisation energy than Boron. (iv) The ionisation energy noble gases of zero

NEW JOYTHI PUBLICATION-SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS -COMPETITIVE EXAM CORNER
  1. In a common emitter transistor amplifier , the output resistance is 50...

    Text Solution

    |

  2. In the circuit given , the current through the zener diode is

    Text Solution

    |

  3. A transistor oscillator is (i) an amplifier with positive feedback (ii...

    Text Solution

    |

  4. A semiconductor with a band gap of 2.5 eV is used to fabricate a p-n p...

    Text Solution

    |

  5. In the circuit given A , B and C are inputs and Y is the output T...

    Text Solution

    |

  6. In the given circuits for ideal diode , the current through the batter...

    Text Solution

    |

  7. The logic gates giving output '1' for the inputs of '1' and '0' are

    Text Solution

    |

  8. Identify the mismatch of the following :

    Text Solution

    |

  9. If a PN junction diode of depletion layer width W and barrier height ...

    Text Solution

    |

  10. The heavily and lightly doped regions of a bipolar junction transistor...

    Text Solution

    |

  11. The device used for detecting optical signal is

    Text Solution

    |

  12. The logical operation carried out by the above circuit is

    Text Solution

    |

  13. In CE transistor amplifier , if the base current is increased by 20 mu...

    Text Solution

    |

  14. If an ideal junction diode is connected as shown , then the value of t...

    Text Solution

    |

  15. Identify the mismatched pair from the following

    Text Solution

    |

  16. In a common emitter configuration a transistor has beta = 50 and input...

    Text Solution

    |

  17. The wave forms A and B given below are given as input to a NAND gate ....

    Text Solution

    |

  18. The output of an AND gate is connected to both the inputs of a NOR gat...

    Text Solution

    |

  19. In p-type semiconductor , the acceptor level lies

    Text Solution

    |

  20. If the feedback voltage is increased in a negative feedback amplifier ...

    Text Solution

    |