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Question

What is the name of the temperature-regulating component of an automatic electric iron?

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
Thermostat

Electric Iron Temperature Regulation Component

An automatic electric iron needs a mechanism to maintain a set temperature. This involves switching the heating element on and off as needed.

The Role of the Thermostat

The component responsible for temperature regulation is the Thermostat. It works by:

  • Sensing the current temperature of the iron's soleplate.
  • Comparing it to the temperature setting selected by the user.
  • Automatically switching the heating element off when the set temperature is reached.
  • Switching the heating element back on when the temperature drops below the set point.

This cycle ensures the iron maintains a consistent temperature suitable for ironing clothes.

Other Components' Functions

The other options serve different purposes:

  • Pressure plate: Not a standard term for a core component in this context; likely irrelevant or misnamed.
  • Solid plate: Refers to the soleplate, the flat metal surface that heats up, but it does not regulate the temperature itself.
  • Heating element: This component generates the heat but does not control or regulate the temperature; it simply heats when powered.

Therefore, the thermostat is the correct answer as the temperature-regulating part.

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