Lap winding is mainly employed in high-current and low-voltage DC machines. Based on the degree of closure and multiplicity, how many primary types of simplex lap windings (such as simplex, duplex, triplex, etc.) are commonly classified in general armature design context?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?