Tag: ac generator

Questions Related to ac generator

Electric generator ____________.

physics magnetism and electromagnetism electric generator ac generator magnetic effects of electric current

  1. Converts electric energy into magnetic energy.

  2. Converts electric energy into mechanical energy.

  3. Converts mechanical energy into electrical energy.

  4. Converts magnetic energy into electrical energy.

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Correct Option: C
Explanation:

An electric generator is a machine which generates electricity by using the principle of EMI. It converts mechanical energy into electrical energy.

An electric generator actually acts as :

physics magnetic effects of electric current electric generator ac generator effects of electric current

  1. source of electric charge

  2. source of heat energy

  3. an electromagnet

  4. a converter of energy

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Correct Option: D
Explanation:

An electric generator is a machine which generates electricity by using the principle of electromagnetic induction. It converts mechanical energy to electrical energy.

Electric generator (Dynamo) generates electricity by using the principle ______.

physics magnetism and electromagnetism electric generator ac generator magnetic effects of electric current

  1. electric circuit

  2. magnetic field

  3. electromagnetic induction

  4. none

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Correct Option: C
Explanation:

Electric generator (Dynamo) generates electricity by using the principle electromagnetic induction
The generator/dynamo is made up of stationary magnets (stator) which create a powerful magnetic field, and a rotating magnet (rotor) which distorts and cuts through the magnetic lines of flux of the stator. When the rotor cuts through lines of magnetic flux it makes electricity.

Dynamos is a device that _______.

physics magnetism and electromagnetism electric generator ac generator magnetic effects of electric current

  1. reduces electric power

  2. generates electricity

  3. step down the voltage

  4. the voltage

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Correct Option: B
Explanation:

An electric generator (Dynamo) is a machine which generates electricity by using the principle of electromagnetic induction.

Principle behind electric generator is

physics effects of electric current electric generator ac generator magnetic effects of electric current

  1. when a straight conductor is moved in the electric field, then current is induced in the conductor.

  2. when a circular loop is moved in electric field, then current is induced in the conductor.

  3. when a straight conductor is moved in a magnetic field, the current is induced in the conductor.

  4. none

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Correct Option: C
Explanation:

Electric generator is the application of EMI. The electric generator woeles on the principle that when a straight conductor is moved in magnetic field, then current is induced in the conductor.

Generators used in power stations to generate electricity are

physics effects of electric current electric generator ac generator magnetic effects of electric current

  1. DC generators

  2. AC generators

  3. Both

  4. None

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Correct Option: B
Explanation:

AC generators are used in power station to generate electricity, which is supplied to our hours. AC generator is also h/a alternator.

There is no ________ in AC generator.

physics magnetism and electromagnetism electric generator ac generator magnetic effects of electric current

  1. ship rings

  2. electromagnets

  3. commulator

  4. generator coil

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Correct Option: C
Explanation:

There is no commutator in AC generator. In DC generator, we connect the two ends of the coil to the commutator consulting two half rings of copper.

In large powerhouse generator, the ________ are stationary and the _______ rotates

physics magnetism and electromagnetism electric generator ac generator magnetic effects of electric current

  1. electromagnets and coils respectively

  2. induces and commutator respectively

  3. coils and electromagnet respectively

  4. commutators and inducer respectively

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Correct Option: C
Explanation:

The power house AC generators have a fixed site of coil arranged around a relating electromagnet. Thus, in large power house generators, the coils are stationary are the electromagnet rotates.

________ are used in making electric generators and electric motors.

physics magnetism and electromagnetism electric generator ac generator magnetic effects of electric current

  1. electric current

  2. magnetes

  3. cables

  4. all

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Correct Option: B
Explanation:

Magnets are also used in making electric generators and electric motors. Magnetic resources imagine also use magnets

AC generator means

physics effects of electric current electric generator ac generator magnetic effects of electric current

  1. Acquired continuity generator

  2. Assistant current generator

  3. Alternating current generator

  4. none

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Correct Option: C
Explanation:

AC generator means alternating generator. i.e. AC generator produces current that revenues its direction continuously.