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प्रश्न
An a.c. generator changes the ______energy to ______ energy.
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उत्तर
An a.c. generator changes the mechanical energy to electrical energy.
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संबंधित प्रश्न
State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes?
Name the device which converts mechanical energy into electric energy.
Complete the following sentence:
A generator with commutator produces ............... current.
In an a.c. generator the speed at which the coil rotates is doubled. How would this affect
- the frequency of output voltage,
- the maximum output voltage is doubled.
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 ______.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is withdrawn from inside the coil?
An AC generator is provided with ______ slip rings that rotate with the coil.
