Recent content by osh1397

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If a student makes monthly deposits of 1,200 into an account with a nominal annual interest rate of 4.5% compounded monthly, will he have enough after 5 years to purchase a $105,000 property in cash? However, the answer used i = 4.5%/12 = 3.75% Where is my mistake in using the formula?

If a student makes monthly deposits of 1,200 into an account with a nominal annual interest rate of 4.5% compounded monthly, will he have enough after 5 years to purchase a $105,000 property in cash? However, the answer used i = 4.5%/12 = 3.75% Where is my mistake in using the formula?

I started using Anki app for the pe power exam, if anyone is interested we can share decks!

I am studying for the pe does anyone want us to study together and share knowledge to better our understanding? I am willing to study share my email

The question: The answer: However, I think the answer is wrong, it should be: Vi = Vt + Id*Xd = 1+ 0.97*1.1j = 1.46 pu So, the voltage is 1.46 * 250 kV = 365.6 kV Do you agree?

The angle is between the terminal voltage and the current the internal voltage has nothing to do with it. Do you agree?

I think it's a mistake since the angle for the current should be kept -34.9. Am I right?

Current: Index finger pointing out of the paper. Mag. field: Middle finger pointing right. Force: Thumb pointing UP not DOWN.

The solution is A. But, from the below attachment the resistance of the rotor IS related to the MAXIMU torque! So, in the question saying that the maximum torque is independent of the rotor resistance is wrong. What do you think?

The question: The answer: I am confused isn't peak power is at peak torque i.e. breakdown torque? Which is at just above 0 RPM?

The answer: The strength of the torque depends on the difference in speed between the stator's rotating magnetic field and the rotor's rotation. The larger the difference in speed the greater the induced voltage, current and torque. When the motor is starting up, let’s assume the magnetic...

Can anyone help. I am confused about the secondary only.

When paralleling transformers the fault level at the bus is it the sum of the individual transformer fault level?