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प्रश्न
Explain the difference:
AC generator and DC generator.
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उत्तर
| AC generator | DC generator | |
| i. | It is used to produce alternating current. | It is used to produce direct current. |
| ii. | It has two simple ring-type commutators. | It has a single split-ring commutator. |
| iii. | Frequency of induced current is 50Hz. | Frequency of induced current is 0Hz. |
| iv. | Current changes its directions. | Current flows in same direction. |
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संबंधित प्रश्न
State the principle of an electric generator.
The essential difference between an AC generator and a DC generator is that
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(a) increasing the number of turns in the armature coil
(b) winding the coil on a soft iron armature
(c) increasing the size of the gap in which the armature turns
(d) increasing the speed of rotation
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a) Identify the machine shown in figure.
b) Write a use of this machine.
c) How transformation of energy takes place in this machine.
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(i) State and explain the principle underlying the working of a simple generator.
(ii) Where is the loop of wire placed?
(iii) What happens when the loop is rotated?
(iv) Indicate the direction of the current flow through the wire for the first half of the turn (in first figure). Name and state the rule used in finding the direction of the current.
(v) Indicate the direction of the current for the case shown in second figure.
(vi) Indicate the direction of current in the outer circuit (i.e., electric bulb) in first and third figure.
(vii) What type of current is shown in the above diagrams? Explain.
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What causes a continuously alternating EMF in an a.c. generator?
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What voltage range is given as an example for generators in real power stations?
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