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प्रश्न
The device used for producing electric current is called a ______.
विकल्प
generator
galvanometer
ammeter
motor
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उत्तर
The device used for producing electric current is called a generator.
Explanation:
- A generator is a device that transforms mechanical energy into electrical energy.
- A galvanometer is a device that detects the existence of electricity in a circuit.
- An ammeter is a device that measures the amount of electric current flowing across a circuit.
- A motor is a piece of machinery that turns electrical energy into mechanical energy.
As a result, the generator is the correct solution.
संबंधित प्रश्न
State the principle of an electric generator.
Name some sources of direct current.
Which sources produce alternating current?
State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is pushed into the coil?
Name the device which converts mechanical energy into electric energy.
Name the phenomenon which is made use of in an electric generator.
What change should be made in an a.c. generator so that it may become a d.c. generator?
What is the function of brushes in an electric generator?
Why are Thermal Power Stations usually located near a river?
The frequency of alternating current (a.c.) supply in India is ______.
State whether the following statement are true of false:
A wire with a green insulation is usually the live wire.
What determines the frequency of a.c. produced in a generator?
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.
State one advantage of using a.c. over d.c.
Explain the construction and working of the following. Draw a neat diagram and label it.
Electric Generator (AC)
Explain the difference:
AC generator and DC generator.
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.
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.
The part of the AC generator that passes the current from the armature coil to the external circuit is ______.
Draw a neat diagram of an AC generator and explain its working.
An AC generator is provided with ______ slip rings that rotate with the coil.
