EM-II power input equation. infinite bus bar

What is the equation for the power input to a synchronous motor?

• A. P = V^2/R

• B. P = VI cos(θ)

• C. P = VI sin(θ)

• D. P = 2πfNV

In a synchronous motor, the power input is:

• A. Equal to the power output

• B. Less than the power output

• C. More than the power output

• D. None of the above

What is the equation for the power developed by a synchronous motor?

• A. P = V^2/R

• B. P = VI cos(θ)

• C. P = VI sin(θ)

• D. P = 2πfNV

In a synchronous motor, the power developed is:

• A. Equal to the power input

• B. Less than the power input

• C. More than the power input

• D. None of the above

The power factor of a synchronous motor is:

• A. Always lagging

• B. Always leading

• C. Unity

• D. Can be either leading or lagging

What is an infinite bus in power systems?

• A. A bus with infinite voltage

• B. A bus with infinite power r

• C. A bus with zero voltage

• D. A bus with zero power

Which of the following statements is true about an infinite bus?

• A. It has a constant voltage and frequency

• B. It has a variable voltage and frequency

• C. It has a fixed voltage but variable frequency

• D. It has a fixed frequency but variable voltage

Which of the following is not an advantage of connecting a generator to an infinite bus?

• A. Provides a stable voltage and frequency

• B. Reduces the effects of disturbances on the generator

• C. Reduces the generator's stability

• D. Provides a large amount of short-circuit current

What is the primary purpose of an infinite bus?

• A. To provide a stable source of power

• B. To limit the power output of the generator

• C. To increase the generator's stability

• D. To allow for easy switching between generators

Which of the following is not a characteristic of an infinite bus?

• A. Constant voltage

• B. Variable frequency

• C. Infinite power capacity

• D. Infinite short-circuit current