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Byju's Answer
Standard XII
Physics
Series Combination of Cells
A commutator ...
Question
A commutator changes the direction of current then how does it ensures a unidirectional current in a DC generator
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Solution
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Similar questions
Q.
Question 4
The essential difference between an AC generator and a DC generator is that:
(a) AC generator supplies direct current.
(b) DC generator has a commutator.
(c) DC generator supplies alternating current.
(d) AC generator has slip rings while the DC generator has a commutator.
Q.
A commutator changes the direction of current in the coil of
Q.
In DC generator, to maintain single direction of current, we use
.
Q.
Which of the following statements correctly elucidates the difference between an A.C. and a D.C. generator?
Statement I: An A.C. generator has commutator and a D.C. generator has slip rings.
Statement II: An A.C. generator has slip rings while a D.C. generator has commutator.
Statement III: A.C. generator rotates only in one direction. Statement IV: The polarity of the current changes for every half rotation in a D.C. generator.
Q.
In a DC motor, ___ changes direction of the current in external circuit every half rotation.
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