Question 350Electricity/Electronics - QMED70% to pass
An AC generator produces 60 Hz at 1800 RPM. If the generator speed is increased to 1830 RPM, what will happen to the frequency in Hz?
AI Explanation
The correct answer is C) increase to 61 Hz.
The frequency of an AC generator is directly proportional to its rotational speed. When the generator speed is increased from 1800 RPM to 1830 RPM, the frequency will also increase proportionally. Since the initial frequency was 60 Hz at 1800 RPM, increasing the speed to 1830 RPM will result in a frequency increase to 61 Hz, as per the formula: Frequency (Hz) = (RPM x Number of Poles) / 60.
The other options are incorrect because: A) decreasing to 59 Hz would not be correct, as the frequency should increase with the speed increase; B) remaining at 60 Hz would not be correct, as the frequency must change with the speed change; and D) increasing to 63 Hz would not be correct, as the frequency increase should be proportional to the speed increase.
Related Questions
#348 Which type of flux should be used when soldering electrical wire connections for electronic components on printed circuit boards? #349 Before touching a small capacitor connected to a de-energized circuit, or even one that is completely disconnected, you should do what FIRST? #351 What is the rotor speed of a six pole, 60 cycle, induction motor operating at full load with 3% slip? #352 A four pole turbo-generator is used in conjunction with a 160 pole propulsion motor. If the generator is turning at 3,200 RPM, what is the current speed of the propeller? #353 In a 60 Hz AC system, what is the duration in seconds for one complete cycle?