Tachometer in a vehicle measure

  1. Speed
  2. Distance
  3. Specific gravity
  4. Fuel consumption

Answer (Detailed Solution Below)

Option 1 : Speed
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Detailed Solution

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Tachometer: It is used to measure the speed of the vehicle.

Odometer: An odometer is an instrument that indicate distance travelled by a vehicle, such as motor cycle and motor vehicle automobile.

Engine RPM Meter: It is used to display the engine rotation in revolution per minute.
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