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Introduction to Electricity

Question 4The...

Question

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.

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Solution

Correct Option: (d)
AC generator has slip rings while the DC generator has a commutator ring which keeps the current flow in the uniform direction.

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Similar questions

The essential difference between an AC generator and a DC generator is that :

(a) AC generator has an electromagnet while a DC generator has permanent magnet.

(b) DC generator will generate a higher voltage.

(c) AC generator will generate a higher voltage.

(d) AC generator has slip rings while the DC generator has a commutator.

Q. Question 11
To convert an AC generator into DC generator

(a) split-ring type commutator must be used
(b) slip rings and brushes must be used
(c) a stronger magnetic field has to be used
(d) a rectangular wire loop has to be used

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.

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