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प्रश्न
What energy conversion does take place in a generator when it is in use?
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उत्तर
Mechanical energy changes into the electrical energy.
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संबंधित प्रश्न
State the principle of an electric generator.
What change should be made in an a.c. generator so that it may become a d.c. generator?
Complete the following sentence:
A generator with commutator produces ............... current.
Each one of the following changes will increase emf (or voltage) in a simple generator except:
(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
Draw a labelled diagram of a simple a.c. generator.
Explain the difference:
AC generator and DC generator.
Draw a neat labeled diagram of an A.C. generator
The given figures 1 to 3 show the working of a simple A.C. generator. Study the diagrams and answers of the following questions.
(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.
State true or false:
The frequency of AC is 50 Hz.
The part of the AC generator that passes the current from the armature coil to the external circuit is ______.
