Question 10080 of 1033 · Washington 01 Journey Level Electrician Exam
During motor starting, the voltage at the fire pump controller line terminals must not drop more than what percentage below the controller rated voltage?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 10080
- B: 15 percent
Explanation
The voltage at the fire pump controller line terminals must not drop more than 15 percent below rated voltage during motor starting. During running at 115 percent of FLC, the drop must not exceed 5 percent at the motor.
More questions: Special Equipment, Pools, PV and EV
- 10081A fire pump motor has a full-load current of 40 amperes and no accessory loads. What is the minimum ampacity of the supply conductors?
- 10082What is required of a fire pump disconnecting means?
- 10083A transformer arc welder has a rated primary current of 50 amperes and a 50 percent duty cycle. The I1eff value is not marked. Using a duty cycle multiplier of 0.71, what is the minimum supply conductor ampacity?
- 10084The OCPD for an arc welder may be rated at not more than what percentage of the rated primary current (I1max)?
- 10085For a feeder supplying a group of arc welders, what percentage is applied to the two largest welders' current?
- 10001Each commercial building and occupancy accessible to pedestrians must have at least one outlet for sign or outline lighting at each tenant entrance. What branch circuit must supply it?