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What is the voltage value in the case of the positive terminal in a cadmium test?

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in Automotive Engine Design by (137k points)
What is the voltage value in the case of the positive terminal in a cadmium test?

(a) Should not be less than 2.5

(b) should be less than 1

(c) Should be less than 0.5

(d) Should not be less than 0.5

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This interesting question is from Battery Testing in section Storage Batteries of Automotive Engine Design

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Right choice is (a) Should not be less than 2.5

Easy explanation: In a cadmium test the chemical condition of the positive and negative plate is found.In the case of a positive terminal, the voltage reading should not be less than 2.5 volts if the battery is nearing completion of its charge or 2.0 volts if the battery is being discharged at a normal rate.

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