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- Describe the key principles behind power system protection schemes and their importance in preventing faults and failures.7.a. Photoelectric eye alignment is typically a PM task for a(n)A. electrician.B. lubricator.C. machine operator.D. mechanic.7.b. Mean time before failure describesA. how long it will take between failures at your plant.B. how long before one component in a group will fail.C. how a failure will occur on a component that’s inside a machine.D. the amount of time a component will last when it’s heavily loaded.7.c. Under an ISO 9000 program, which one of the following employees is responsible for checkingcompleted work to make sure it has been performed to company specifications?A. The maintenance general managerB. The PM program administratorC. A shop foremanD. A maintenance techniciana.What is an ROC? b.What is a cold site? c,What is fault tolerance?
- Calculate the following. a) Expected voltage at “A” with switch SW1 open. b) Expected voltage at “A” with switch SW1 closed.Describe the different types of power system faults, such as short circuits and open circuits. How do these faults impact the operation of the power system, and how are they detected and mitigated?Explain the different types of faults that can occur in a power system and their impact on system stability.
- Explain the importance of power system protection. Discuss various types of protection devices and strategies used to safeguard electrical infrastructure from faults and disturbances.Explain the concept of symmetrical and unsymmetrical faults in power systems. How are these faults analyzed, and what protective measures can be implemented?Explain the concept of fault detection and protection in power systems.
- Discuss the concept of an Electrical fault. How can we prevent such catastrophic incidentfor such fault in an electrical system?Explain the concept of a circuit breaker in electrical power systems and its role in protecting against overcurrent faults.Explain the concept of load shedding and its importance in preventing power system blackouts.