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Which of the following is the best method to measure the speed?

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+1 vote
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in Automobile Engineering by (80.5k points)
Which of the following is the best method to measure the speed?

(a) Mechanical tachometer

(b) Electrical tachometer

(c) Magnetic pickup

(d) Mechanical counters

I have been asked this question in a national level competition.

This intriguing question originated from Measurements and Testing in section Automotive Electronics, Engine Performance Parameter & Testing of Automobile Engines of Automobile Engineering

1 Answer

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Best answer
Right option is (c) Magnetic pickup

The best explanation: Magnetic pickup is the best device to measure the speed. Mechanical and electrical tachometers are affected by temperature variation and those are not accurate.

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