As part of a fault finding exercise, you are required to measure the voltage across the resistor R2 in the circuit below. The meter you are using has an internal resistance of 1.04 MQ. What is the error in your measurement? (Give your answer as a percentage of the true voltage value). Hint: You may wish to start by drawing the circuit with the meter in place. R1 R2 R3 Rs Vs R4 R5 Vs = 225 V %3D Rs = 0.3 2 R1 = 25 Q R2 = 278 kn %3D R3 = 264 kn R4 = 132 ko R5 = 292 ko Answer: 0%
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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