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.

Only II

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I and III

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I, II and III

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Only IV

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Solution

The correct option is A Only II
In an A.C. generator, the two ends of the coil are connected to two full rings of copper called slip rings.

In a D.C. generator, the two ends of the coil are connected to a commutator consisting of two half rings of copper.

Thus, option A is the correct answer.

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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.

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.

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

Q. Out of an A.C. generator and a D.C. generator:

(a) which one uses a commutator (split rings)?
(b) which one uses slip rings?

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

The current produced by an AC generator with slip rings is shown in graphs (1) and (2). Then which of the following correctly represent the variations in current with time?

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The correct option is A Only IIIn an A.C. generator, the two ends of the coil are connected to two full rings of copper called slip rings. In a D.C. generator, the two ends of the coil are connected to a commutator consisting of two half rings of copper. Thus, option A is the correct answer.

The correct option is A Only II
In an A.C. generator, the two ends of the coil are connected to two full rings of copper called slip rings.

In a D.C. generator, the two ends of the coil are connected to a commutator consisting of two half rings of copper.

Thus, option A is the correct answer.