co-energy in singly excited and multi excited magnetic field sys

What is a singly excited magnetic field system?

• A system where only one field coil is excited by a current.

• A system where no field coil is excited by a current.

• A system where multiple field coils are excited by a current.

• A system where the magnetic field is not affected by current.

How is a multi excited magnetic field system different from a singly excited one?

• A multi excited magnetic field system has more than one source of excitation.

• A multi excited magnetic field system has a weaker magnetic field than a singly excited one.

• A multi excited magnetic field system has only one source of excitation.

• A multi excited magnetic field system has less power than a singly excited one.

What is the MMF of distributed windings?

• Quotient of the number of turns and the current flowing through each turn

• Product of the number of turns and the current flowing through each turn

• Difference of the number of turns and the current flowing through each turn

• Sum of the number of turns and the current flowing through each turn

What are the characteristics of a singly excited magnetic field system?

• Electric field system

• No source of excitation

• Multiple sources of excitation

• Only one source of excitation

How does a multi excited magnetic field system affect the overall magnetic field?

• It weakens the overall magnetic field.

• It has no effect on the overall magnetic field.

• It strengthens the overall magnetic field.

• It creates a new magnetic field in the opposite direction.

Why is the MMF of distributed windings important in electrical machines?

• To create a more chaotic magnetic field

• To have no impact on the performance of electrical machines

• To increase losses and reduce efficiency

• To produce a more uniform magnetic field, reduce losses, and improve efficiency.

What are the applications of a singly excited magnetic field system?

• Transformers, electric motors, and generators

• Refrigerators, dishwashers, and toasters

• Airplanes, submarines, and rockets

• Computers, smartphones, and tablets

How can a multi excited magnetic field system be utilized in practical engineering?

• By using it to grow plants in a garden

• By using it to cook food in the kitchen

• By using it to play music in a concert

• By using it in electric motors to generate motion and power

How does the MMF of distributed windings contribute to the efficiency of electrical machines?

• It improves the magnetic flux distribution and reduces magnetic reluctance.

• It has no impact on the efficiency

• It increases magnetic reluctance

• It decreases the magnetic flux distribution

What are the advantages of using a singly excited magnetic field system in power generation?

• More complex construction and higher cost

• Simpler construction and lower cost

• Less efficient and higher cost

• No impact on construction and cost