स्थैतिक रूप से प्रेरित ईएमएफ (statically induced emf) के सिद्धांत का उपयोग निम्नलिखित में से किस उपकरण में किया जाता है?

Which of the following territories was annexed by Lord Dalhousie under the pretext of misgovernance, and not directly through the Doctrine of Lapse?

What was the primary stated reason for the Partition of Bengal in 1905 by Lord Curzon?

Which of the following events is considered the immediate trigger for the launch of the Non-Cooperation Movement by Mahatma Gandhi?