ТЭЦ(КУРСЕРА)

In what units is the voltage of electric motors measured?

• Ampere

• 1)  Pendants

• 1)  Voltach

• Hertz

• 1)  Newtons

What is the electric current produced by generators?

• 1)   Water flow in the river

• 1)   Wind flow in the air

• 1)   Directed movement of electrons

• 1)  Attractive force

• 1)   Division of atoms into electrons, protons and neutrons

What device is used to measure the electric current of electric motors?

• Ammeter

• Voltmeter

• Wattmeter

• 1)   Phase meter

• Kenetron

Commutator motors allow:

• 1)   Reduce engine dimensions

• 1)   Reduce electrical energy losses

• 1)  Smoothly change the rotor speed

• 1)  Increase speed

• 1)  Reduce speed

Commutator motors are used:

• 1)   In the electric drive of machine tools

• 1)   In car starters

• 1)   In refrigerators

• 1)   In electric transport devices

• 1)   On wind generators

To convert alternating current to direct current,

• Engines

• Generators

• Rectifiers

• 1)   Heating devices

• 1)   Lighting fixtures

The rotors of commutator and asynchronous motors rotate under the influence of interaction forces:

• 1)  Stator current and rotor current

• 1)   Stator current and rotor voltage

• 1)  Stator voltage and rotor voltage

• 1)   Magnetic field of the stator with current in the winding from the rotor

• 1)   Voltage at the motor input and current in the rotor winding

Scope of application of asynchronous motors:

• 1)   Electric drive

• 1)   Electric traction

• 1)   For lighting purposes

• 1)   For heating purposes

• 1)   As transformers

Technical devices that use the electromagnetic action of electric current:

• 1)   Electric motors and generators

• 1)   Lighting fixtures

• 1)   Heating devices

• 1)   Power lines

• Fuses

What is the electric current produced by generators?

• 1)   Water flow in the river

• 1)   Wind flow in the air

• 1)   Directed movement of electrons

• 1)  Attractive force

• 1)   Division of atoms into electrons, protons and neutrons