A 120 volt AC generator has a full load rating of 12 KVA. What is the full load current for this machine?

Prepare for the MTA Transit Electrical Helper Exam with flashcards and multiple-choice questions. Hints and explanations accompany each question. Get ready for your exam!

To determine the full load current of a 120-volt AC generator with a full load rating of 12 KVA, the formula to use is:

Full Load Current (I) = Power (P) in KVA / Voltage (V)

First, convert the KVA rating to amps by remembering that 1 KVA is equal to 1000 VA:

12 KVA = 12,000 VA

Now, using the formula:

I = 12,000 VA / 120 V

Calculating this gives:

I = 100 A

Therefore, the full load current for the machine is 100 amperes, confirming that the stated answer is indeed correct. This shows how to apply the formula for calculating current based on voltage and power, which is crucial for electrical helpers in understanding load calculations. The other options represent values that would not satisfy the calculation based on the given power and voltage.

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