• In the source room you connect a battery of 20V to terminals A and B, A being the point of higher potential. The battery hạs an internal resistance of 0.25 ohm. An internal resistance of a battery can be thought of as a resistor of 0.25 ohm in series with a perfect source of 20V. (Grace can clarify this point for you.) • The friend in sink room connect one resistor at a time for both to make measurements. The sequence of different resistors in the sink room are: (1) 100 ohms, (2) 10 ohms, (3) 1 ohm, (4) 0.1 ohm. • You and the friend do the measurements each time. • Questions: a) What do you and the friend see (with the measurements)? b) What is the circuit like in the other room? Why?
Protection System
A system that protects electrical systems from faults by isolating the problematic part from the remainder of the system, preventing power from being cut from healthy elements, improving system dependability and efficiency is the protection system. Protection devices are the equipment that are utilized to implement the protection system.
Predictive Maintenance System
Predictive maintenance technologies are designed to assist in determining the state of in-service equipment so that maintenance can be scheduled. Predictive maintenance is the application of information; proactive maintenance approaches examine the condition of equipment and anticipate when it should maintain. The purpose of predictive maintenance is to forecast when equipment will fail (depending on a variety of parameters), then prevent the failure through routine and corrective maintenance.Condition monitoring is the continual monitoring of machines during process conditions to maintain optimal machine use, which is necessary for predictive maintenance. There are three types of condition monitoring: online, periodic, and remote. Finally, remote condition monitoring allows the equipment observed from a small place and data supplied for analysis.
Preventive Maintenance System
To maintain the equipment and materials on a regular basis in order to maintain those running conditions and reduce unnecessary shutdowns due to unexpected equipment failure is called Preventive Maintenance (PM).
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