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The principle behind the _________ is seen in the carburetor where the fuel is sucked into the chamber.

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SSC Scientific Assistant Physics Official Paper (Held On: 25 November 2017 Shift 1)
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  1. barometer
  2. manometer
  3. vacuum gauge
  4. Venturi-meter

Answer (Detailed Solution Below)

Option 4 : Venturi-meter
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SSC Scientific Assistant Physics Official Paper (Held On: 22 November 2017 Shift 1)
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Detailed Solution

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CONCEPT:

  • A venturi-meter is a device used for measuring the rate of a flow of a fluid flowing through a pipe.
  • It does not depend upon the orientation.
  • This device works on Bernoulli's theorem.

EXPLANATION:

  •  The carburetor of an automobile has a Venturi channel (nozzle) through which air flows with high speed.
  • The pressure is then lowered at the narrow neck and the petrol (gasoline) is sucked up in the chamber to provide the correct mixture of air to fuel necessary for combustion. Therefore option 4 is correct.
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