आकाशीय बिजली (lightning stroke) के कारण होने वाले उच्च वोल्टेज सर्ज से बिजली प्रणाली के उपकरणों की सुरक्षा के लिए उपयोग किए जाने वाले सुरक्षात्मक उपकरण को _______ कहा जाता है।

In a power system protection scheme, the property that allows a relay to differentiate between a fault occurring within its own protected zone and a fault occurring elsewhere is known as:

Given the following statements: Assertion (A): Overcurrent protection is generally not used as the primary protection for alternators. Reason (R): Alternators have large short-circuit currents that can be sustained for long durations without damage. Which of the following is correct?