Generator Angular Speed and Voltage

This video tutorial focuses on solving common physics problems related to electric generators. It covers calculating angular speed, peak output voltage, RMS voltage, and current, as well as power dissipation in resistors. The tutorial also explains how changes in RPM affect the output voltage of a generator, using formulas and examples to illustrate these concepts.

What is the formula to calculate the angular speed of a generator?

• 2πf

• NBAω

• P = I²R

• V = IR

Which of the following is used to calculate the peak output voltage of an AC generator?

• V = IR

• NBAω

• P = I²R

• 2πf

How is the RMS voltage related to the peak voltage in an AC circuit?

• RMS voltage is the peak voltage divided by the square root of 2

• RMS voltage is the peak voltage multiplied by the square root of 2

• RMS voltage is the peak voltage divided by 2

• RMS voltage is the peak voltage multiplied by 2

What is the RMS current if the RMS voltage is 199.9 volts and the resistance is 50 ohms?

• 5 amps

• 2.5 amps

• 4.5 amps

• 3.998 amps

How do you convert RPM to angular speed in radians per second?

• Multiply by 2π and divide by 60

• Multiply by 2π

• Divide by 60

• Multiply by 60 and divide by 2π

What is the frequency of a generator with an angular speed of 261.8 radians per second?

• 41.67 Hz

• 60 Hz

• 50 Hz

• 30 Hz

What is the peak output voltage of a generator with 200 loops, a magnetic field of 0.25 Tesla, and an angular speed of 261.8 radians per second?

• 377 volts

• 199.9 volts

• 282.75 volts

• 411.2 volts

How does the output voltage change if the angular speed of a generator is tripled?

• The output voltage triples

• The output voltage doubles

• The output voltage halves

• The output voltage remains the same

If a generator's angular speed increases from 1500 RPM to 4500 RPM, what happens to the output voltage?

• It increases by a factor of 3

• It decreases by a factor of 3

• It doubles

• It remains constant

What is the new output voltage if a generator's initial output is 10 volts at 1500 RPM and the speed is increased to 4500 RPM?

• 15 volts

• 10 volts

• 30 volts

• 20 volts