उस स्थिति में जहां वोल्टेज बेस समान होते हैं, नया प्रति-इकाई प्रतिबाधा (per-unit impedance) निम्नलिखित में से किस सूत्र से प्राप्त किया जाता है?

The average demand of a power plant is calculated as:

What primary action occurs during load shedding in a power system?

Which of the following is classified as a symmetrical fault in power systems?