Advertisements
Advertisements
Question
The device used for producing electric current is called a ______.
Options
generator
galvanometer
ammeter
motor
Advertisements
Solution
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.
RELATED QUESTIONS
Name some sources of direct current.
A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each______.
What change should be made in an a.c. generator so that it may become a d.c. generator?
What is the major difference between the simple alternator and most practical alternators?
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 whether the following statement are true of false:
A miniature circuit breaker (MCB) works on the heating effect of current.
The current induced in a closed circuit only if there is ______.
Name and state the principle of a simple a.c. generator. What is its use?
What determines the frequency of a.c. produced in a generator?
What energy conversion does take place in a generator when it is in use?
An a.c. generator changes the ______energy to ______ energy.
Draw a neat diagram of an AC generator and explain its working.
To convert an AC generator into DC generator ____________.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside the coil?
An AC generator is provided with ______ slip rings that rotate with the coil.
Observe the following diagram and answer the questions.

- Explain the construction of the equipment shown in the figure.
- How is AC generated?
State one factor that affects the magnitude of induced current in an AC generator.
