The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple. Options: A . &nbspChromel-alumel B . &nbspIron-constantan C . &nbspPlatinum-platinum/rhodium D . &nbspNone of these

The temperature of tempering oil baths maintained at 400°C during heat treatmen

Question

The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.

Options:

A . Chromel-alumel

B . Iron-constantan

C . Platinum-platinum/rhodium

D . None of these

Answer: Option B

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