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Which of the following is the knock sensor?

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in Automobile Engineering by (80.5k points)
Which of the following is the knock sensor?

(a) Flap type sensor

(b) Thermocouples

(c) Thermistors

(d) Piezoelectric pickup

The question was asked in a job interview.

The above asked question is from Engine Electronics topic in portion Automotive Electronics, Engine Performance Parameter & Testing of Automobile Engines of Automobile Engineering

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The correct option is (d) Piezoelectric pickup

Explanation: Piezoelectric pickup is the knock sensor. This sensor is mounted on the cylinder block. Knock sensor system uses a sensor, which is piezoelectric vibration pickup.

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