1. Thermostats are used to _________.
a) only complete a circuit
b) only break a circuit
c) both complete and break a circuit
d) neither complete nor break a circuit
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D)neither complete nor break a circuit.
Because thermostat, device to detect temperature changes for the purpose of maintaining the temperature of an enclosed area essentially constant.In a system, including relays,valves,switches,etc, the electrostat generates signals ,usually electrical,when the temperature exceeds or falls below the desired value.So thermostats is an instrument allowing the temperature to be maintained within given limits.
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