Which of the following galvanometer has very high sensitivity?
Pivoted type galvanometer
Suspended type galvanometer
Moving coil galvanometer
All the above.
Removal of the property of magnetization is called
Magnetisation
Electromagnetic induction
Demagnetisation
Paramagnetism
Which of the following converts mechanical energy to electrical energy?
Electric bell
Electric heater
Generator
Electric iron
Which of the following gives the presence and direction of flow of current in any circuit?
Ammeter
Galvanometer
Voltmeter
Rheostat
Which of the following is used to measure the current in a circuit?
The materials which are attracted by magnets are called
Ferromagnets
Paramagnets
Bar magnets
Electromagnets
Which of the following is used to increase or decrease the amplitude of alternating current?
Transformer
What material is use for making the armature of an electric bell?
Soft iron
Silver
An alloy of iron and steel
Copper
The a.c. generator converts
Mechanical energy into electrical energy
Electrical energy into mechanical energy
Electrical energy to heat energy
Mechanical energy into heat energy
The speed of the motor can be increased by increasing
Magnetic strength
Current
Number of turns in the coil
All the above
