Answer / vijayaprakash

at first u know what is temperature and what is controller

here, to see simple controller automatic iron box

one heater element and thermostat are used. when the
temperature raises thermostat controls the supply of the
heater. it is called on off controller

Answer / akhil.goyalanager1985

space heater

Answer / ernesto

AC, refrigerator

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A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg. This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor. And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM. The question is : If the motor speed is +5,500 (RPM), what will be the temperature? (-sign indicates that the motion is in reverse direction).

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