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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
A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each______.
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.
The frequency of alternating current (a.c.) supply in India is ______.
State whether the following statement are true of false:
A miniature circuit breaker (MCB) works on the heating effect of current.
What determines the frequency of a.c. produced in a generator?
Draw a labelled diagram of a simple a.c. 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.
Suggest two ways in an a.c. generator to produce a higher e.m.f.
Explain the construction and working of the following. Draw a neat diagram and label it.
Electric Generator (AC)
Draw a neat labeled diagram of an A.C. generator
Explain the construction and working of an electric generator (AC) with the help of a neat diagram.
A flat coil of wire rotates at a constant speed about an axis perpendicular to a uniform magnetic field. Draw a graph to show how the induced e.m.f. varies relative to the positions of the coil during its one complete rotation. At what position of the coil, the e.m.f. has the maximum value?
State change that you would make to convert an A.C. generator into a D.C. generator. Illustrate the change by a diagram.
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.
A device for producing electric current is ______.
Draw a neat diagram of an AC generator and explain its working.
What causes a continuously alternating EMF in an a.c. generator?
In what direction are the magnetic field arrows drawn between the poles?
Which labels identify the two slip rings?
What does the external load do in an a.c. generator?
What is the angle between the area vector \[A\] of the coil and the magnetic field \[B\] at time \[t\]?
What is the magnetic flux through one turn at time \[t\]?
What is the peak EMF of the rotating coil?
Which is the standard form of the alternating EMF?
How is angular speed related to frequency of rotation \[n\]?
Which energy source and sequence describe generator use in a nuclear power plant?
