विद्युत मोटर एक ऐसा उपकरण है जिसका उपयोग ऊर्जा के किस रूप को दूसरे रूप में बदलने के लिए किया जाता है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?