Physics
Grade-10
Easy
Question
The essential difference between an A.C. generator and a D.C. generator is that
- A.C. generator has an electromagnet, while a D.C. generator has a permanent magnet.
- D.C. generator will generate a higher voltage
- A.C. generator will generate a higher voltage
- A.C. generator has slip rings while the D.C. generator has split rings.
Hint:
DC generators have split rings or commutator rings.
The correct answer is: A.C. generator has slip rings while the D.C. generator has split rings.
The essential difference between an A.C. generator and a D.C. generator is that the A.C. generator has slip rings while the D.C. generator has split rings.
- The AC generators have slip rings whereas the DC generators have split rings or commutator rings.
- The slip rings have a closed structure and the split ring has two divisions.
- The split rings reverse the current in each half-rotation to let the current flow in a single and uniform direction.
Related Questions to study
Physics
Choose the correct option by reading the following statements: Assertion: The induced emf in a conducting loop of wire will be nonzero when it rotates in a uniform magnetic field. Reason: The emf is induced due to a change in magnetic flux.
Choose the correct option by reading the following statements: Assertion: The induced emf in a conducting loop of wire will be nonzero when it rotates in a uniform magnetic field. Reason: The emf is induced due to a change in magnetic flux.
PhysicsGrade-10
Physics
An induced emf is induced in the circuit whenever the magnetic flux is related to a coil change:
I. for short, the e.m.f. lasts
II. for an extended period of time
III. for as long as the flux is changing
The correct statement(s) is/are
An induced emf is induced in the circuit whenever the magnetic flux is related to a coil change:
I. for short, the e.m.f. lasts
II. for an extended period of time
III. for as long as the flux is changing
The correct statement(s) is/are
PhysicsGrade-10
Physics
Choose the correct option from the following statements.
Assertion: The movement of a conductor in a magnetic field can induce an emf.
Reason: A change of the magnetic field might cause an emf.
Choose the correct option from the following statements.
Assertion: The movement of a conductor in a magnetic field can induce an emf.
Reason: A change of the magnetic field might cause an emf.
PhysicsGrade-10
Physics
Consider a coil and a magnet.
Current is induced in the coil when:
I. coil and magnet both are at rest.
II. the coil is at rest and the magnet moves along x.
III. magnet is at rest and coil moves along x.
IV. both coil and magnet move along y with the same speed.
The correct statements are:
Consider a coil and a magnet.
Current is induced in the coil when:
I. coil and magnet both are at rest.
II. the coil is at rest and the magnet moves along x.
III. magnet is at rest and coil moves along x.
IV. both coil and magnet move along y with the same speed.
The correct statements are:
PhysicsGrade-10
Physics
When a bar magnet is pushed towards the coil connected in series with a galvanometer, the pointer in the galvanometer G:
When a bar magnet is pushed towards the coil connected in series with a galvanometer, the pointer in the galvanometer G:
PhysicsGrade-10
Physics
A loop is formed by connecting a coil of insulated copper wire to a galvanometer, and a magnet is:
A: Held stationary
B: Moved away along its axis
C: Moved along its axis
There will be an induced current in:
A loop is formed by connecting a coil of insulated copper wire to a galvanometer, and a magnet is:
A: Held stationary
B: Moved away along its axis
C: Moved along its axis
There will be an induced current in:
PhysicsGrade-10
Physics
A current can be induced in a coil by:
A current can be induced in a coil by:
PhysicsGrade-10
Physics
Electromagnetic induction is defined as the following:
Electromagnetic induction is defined as the following:
PhysicsGrade-10
Physics
In a magnetic field, a rectangular coil of copper wires is rotated. Once in each rotation, the direction of induced current changes.
In a magnetic field, a rectangular coil of copper wires is rotated. Once in each rotation, the direction of induced current changes.
PhysicsGrade-10
Physics
The rectangular coil of the electric generator executes ______ motion.
The rectangular coil of the electric generator executes ______ motion.
PhysicsGrade-10
Physics
No current gets induced in the coil when it is
No current gets induced in the coil when it is
PhysicsGrade-10
Physics
The induced current in the coil placed in a magnetic field is zero when the angle between the direction of motion of wire and the direction of the magnetic field is
The induced current in the coil placed in a magnetic field is zero when the angle between the direction of motion of wire and the direction of the magnetic field is
PhysicsGrade-10
Physics
In an electric generator, which force is used to rotate the coil?
In an electric generator, which force is used to rotate the coil?
PhysicsGrade-10
Physics
Induced current's direction in a wire that is moving in a magnetic field can be determined using:
Induced current's direction in a wire that is moving in a magnetic field can be determined using:
PhysicsGrade-10
