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प्रश्न
A device for producing electric current is ______.
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उत्तर
A device for producing electric current is Generator.
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संबंधित प्रश्न
Which sources produce alternating current?
What type of generator is used at Power Stations?
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
State whether the following statement are true of false:
A wire with a green insulation is usually the live wire.
State one advantage of using a.c. over d.c.
Observe the figure and answer the following questions.
a) Identify the machine shown in figure.
b) Write a use of this machine.
c) How transformation of energy takes place in this machine.
Draw a neat labeled diagram of an A.C. generator
State change that you would make to convert an A.C. generator into a D.C. generator. Illustrate the change by a diagram.
Draw a neat diagram of an AC generator and explain its working.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside the coil?
