Home
Class 12
PHYSICS
A transistor oscillator is (i) An ampl...

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

All (i), (ii) and (iii) are correct

B

(i) and (ii) are correct

C

(i) and (iii) are correct

D

(ii) and (iii) are correct

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 67

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

  • NTA JEE MOCK TEST 70

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

The overall gain of a multistage amplifier is 100. When negative feedback is applied,the gain reduces to 10.Find the fraction of the output that is feedback to the input

When base current in a silicon transistor is changed by 12 muA the input resistance of the transistor is 650 omega when this transistor is uded as a CE amplifier with load resistance of 2 k omega calculate (i) the current gain (ii) transconductance (iiii) voltage gain of the amplifer

Assertion : In an oscillator, the feedback is in the same phase which is called as positive feedback. Reason: If the feedback voltage is in opposite phase, the gain is greater than one.

In a negative feedback amplifier, the gain without feedback in 100 , feed back ratio is 1//25 and input voltage is 50 m V . Calculate (i) gain with feedback (ii) feedback factor (iii) output voltage (iv) feedback voltage (v) new input voltage so that output voltage with feedback equals the output voltage without feedback.

Output characteristics of an n-p-n transistor in CE configuration is shown in the Fig. Determine (i) dynamic output resistance (ii) dc current gain and (iii) ac current gain at an opererating point V_(CE)=10V , when I_(B)=30muA .

Draw a circuit diagram of a transistor amplifier in CE configuration. Define the terms (i) Input resistance and (ii) Current amplification factor. How are these determined using input and output characteristics?

A linear harmonic oscillator has a total mechanical energy of 200 J . Potential energy of it at mean position is 50J . Find (i) the maximum kinetic energy, (ii)the minimum potential energy, (iii) the potential energy at extreme positions.

Name the devices or machines which convert : (i) Electrical energy into sound energy. (ii) Heat energy into kinetic energy (or mechanical energy). (iii) Chemical energy into kinetic energy (or mechnical energy). (iv) Chemical energy into heat energy. (v) Light energy into heat energy.

The amplitude of a simiple harmonic oscillator is tripled. How does this affect (i) the maximum velocity (ii) the total energy and (iii) the period of the oscillator?

NTA MOCK TESTS-NTA JEE MOCK TEST 69-PHYSICS
  1. Two identical satellites are moving around the Earth in circular orbit...

    Text Solution

    |

  2. An ideal gas is compressed to half its initial volume by means of seve...

    Text Solution

    |

  3. A conductor AB of length l carrying a current i is placed perpendicula...

    Text Solution

    |

  4. A ball is projected from the ground at angle theta with the horizontal...

    Text Solution

    |

  5. A 2000 kg rocket in free space expels 0.5 kg of gas per second at exha...

    Text Solution

    |

  6. Mp depends the mass of a proton and Mn that of a neutron. A given nucl...

    Text Solution

    |

  7. A body of mass 'm' hangs from three springs, each of spring constant '...

    Text Solution

    |

  8. For certain metal incident frequency nu is five times threshold freque...

    Text Solution

    |

  9. The radius R of the soap bubble is doubled under isothermal condition....

    Text Solution

    |

  10. From a disc of radius R, a concentric circular portion of radius r is...

    Text Solution

    |

  11. A transistor oscillator is (i) An amplifier with positive feedback ...

    Text Solution

    |

  12. A cylinder closed at both ends is separated into two equal parts (45 c...

    Text Solution

    |

  13. The dimensional formula for areal velocity is

    Text Solution

    |

  14. The instantaneous displacement of a simple pendulum oscillator is give...

    Text Solution

    |

  15. If W(1) W(2) and W(3) represent the work done in moving a particle fro...

    Text Solution

    |

  16. A machine gun has a mass 5 kg. It fires 50 gram bullets at the rate of...

    Text Solution

    |

  17. An A.C. voltage V=5cos(1000t)V is applied to an L-R series circuit of ...

    Text Solution

    |

  18. A particle moves according to the law x=r cos((pit)/(2)). The distance...

    Text Solution

    |

  19. A uniform copper rod 50 cm long is insulated on the sides, and has its...

    Text Solution

    |

  20. If the distance between the virtual image from Its real object is 60 c...

    Text Solution

    |