RGUKT Mock Test Electro Magnetism - 1
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Which converts mechanical energy into electrical energy ?
To understand the working of a electric motor we need to understand the behaviour of a ___________kept in a uniform magnetic field
a. Electric fields carrying coil
b. Magnetic fields carrying coil
c. Current carrying coil
d. Magnetic carrying coil
The magnetic lines of force
a. They are straight lines
c. Do not intersect each other
d. Intersects each other
The current in a generator armature is AC. Because
a. The rotation of the armature causes the field through into reverse
b. The current in the field coils in AC
c. The magnetic field reverses at intervals
d. The commutator feeds current into it in opposite directions every half cycle
A magnetic field is a ……….. quantity
In right hand rule , the fore-finger , the middle finger and the thumb finger are ————-to each other.
According to right hand rule , the fore-finger points towards the direction of
In right hand rule , the thumb gives direction of
Dynamo and motors are based on
a. Faraday’s law and Ampere’s force law respectively
b. Ampere’s force law
c. Ampere’s force law and Faraday’s law respectively
d. Faraday’s law
The magnetic field inside a long straight solenoid carrying current ——————
a. Is same at all points
b. Increases as we move towards its end
c. Decreases as we move towards its end
d. Is zero