Which of the following is used in the measurement of water temperature and flow rate?

Which of the following is used in the measurement of water temperature and flow rate? Correct Answer Feed-forward control

The Feed-forward control is used in the measurement of water temperature and flow rate. It is mostly used when pressure and temperature fluctuations occur in cascade control.
Bissoy MCQ

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The Proper sequence should be:
Hot water having specific heat 4200 J/kg K flows through a heat exchanger at the rate of 4 kg/min with an inlet temperature of 100 degree Celsius. A cold fluid having a specific heat 2400 J/kg K flows in at a rate of 8 kg/min and with inlet temperature 20 degree Celsius. Make calculations for maximum possible effectiveness if the fluid flow conforms to parallel flow arrangement