Which of the following is used to measure the current in a circuit ?
Galvanometer
Ammeter
Voltmeter
Rheostat
Which of the following galvanometer has very high sensitivity?
Pivoted type galvanometer
Suspended type galvanometer
Moving coil galvanometer
All the above
When a low resistance wire is connected in parallel to the coil of galvanometer, it works as
Electromagnet
Generator
Which of the following is used to decrease a.c potential?
A.C generator
D.C generator
Step-up transformer
Step-down transformer
Which of the following is most commonly used galvanometer?
Which of the following statement is true?
The magnetism induced in iron and steel is temporary
The magnetism induced in iron and steel is permanent
The magnetism induced in iron is permanent while in steel is temporary
The magnetism induced in iron is temporary while in steel is permanent
Which of the following converts mechanical energy to electrical energy?
Electric bell
Electric heater
Electric iron
What material is use for making the armature of an electric bell?
Soft iron
Silver
An alloy of iron and steel
Copper
A device is used to transform 12 V d.c. to 200 V a.c.What is the name of the device?
Which of the following gives the presence and direction of flow of current in any circuit?
