(2) State whether the following statements are true (T) or false (F). Correct the false statements? The time constant of the system is defined as the time .10 required for response to reach 90% of its ultimate .....value 11. The speed of the response of a first-order system is determined by the time constant for the system. As t increases, it takes longer for the system to respond to the step disturbance. 12. The household refrigerator is an example of an open - loop control system 16. the thermometer value reaches 98% of its ultimate value when the time elapsed is equal to one time constant) the constant time of the system can be define as time .17 required for response to reach 94% of the ultimate value