Paper 1 · People, Development and Environment
UGC NET December 2021 June 2022 (29.09.2022) Shift-II
Given below are two statements. In the light of the above statements, choose the correct answer from the options given below.
- Statement I: Photovoltaic panels are increasingly used to supplement grid electrical energy.
- Statement II: A grid-connected PV issue is that PV cells produce AC while power grids use DC.
ABoth Statement I and Statement II are true
BBoth Statement I and Statement II are false
CStatement I is true but Statement II is false ✓ Correct
DStatement I is false but Statement II is true
Correct answer: (C) Statement I is true but Statement II is false — The answer is that Statement I is true but Statement II is false.
Explanation
★The answer is that Statement I is true but Statement II is false.
★Photovoltaic panels are indeed increasingly used to add to grid electricity, so Statement I is true.
★In fact PV cells produce direct current, while the grid runs on alternating current, so the two are the other way round.
★So the claim that PV cells produce AC and grids use DC makes Statement II false.
★Thus only the first statement holds.
★This is why an inverter is needed to feed PV power into the grid.
★So the answer is that Statement I is true but Statement II is false.
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