A lightning arrestor protects the electrical components from ______. incoming voltage surges incoming arch flashes ungrounded circuits blown fuses 3 phase power A ball vale is used to isolate the storage tank. True False A pressure tank is used ______. as a storage tank to keep the system pressurized to help keep the pump from short cycling all of the answers provided none of the answers provided The pump motor is located ______. above the pump below the pump at the top of the well casing in the pressure tank none of the answers provided Quiz 2 – Chapter 2 Summary Table – Estimating Peak Demand Water Usage Name of Method Procedure Peak Demand Calculation Method 1. Counting the Total Number of Fixtures Count the total number of fixtures in the structure Total Number of Fixtures x 1 gpm per fixture = gpm demand Method 2. Counting the Number of Fixtures in Use Count the total number of fixtures in USE at one time Total number in USE x 3 gpm = gpm demand Method 3. Counting the Number of Bathrooms and Fixtures in Use Count the number of bathrooms in the house and the fixtures being used Use Flow Rate Table (below) to determine peak demand Method 4. Counting the Number of Bathrooms Count number of full baths and half baths in house Number of baths = full baths and half baths. x 4 gpm = peak demand Method 5. Counting the Number of People Count the number of people staying at the house Number of people x 4 gpm = peak demand Flow Rate (GPM) Total Usage (Gallons) Flow Rate Table - Bathrooms in house Count the fixtures in use 1 1.5 2-2.5 3-4 Shower or Bathtub 5 35 35 35 53 70 Lavatory 4 2 2 4 6 8 Toilet 4 5 5 10 15 20 Kitchen Sink 5 3 3 3 3 3 Automatic Washer 5 35 18 18 18 18 Dishwasher 2 14g - - 3 3 Total gal. in 7-minute peak flow
207 – 253 none of the answers provided FLA is an abbreviation meaning ______. Full-Load Amps Frequency Leading Amplitude False Load Application Fluke Leader Amp meter none of the answers provided Hertz is a measurement of ______. electrical cycles per second peak voltage average voltage amperage in a cycle none of the answers provided The most common phase serving a residence would be ______. single phase two or double phase three phase multiple phases none of the answers provided RPM is the approximate speed ______. under full-load conditions when voltage is at rated value when frequency is at rated value all of the answers provided The difference between synchronous speed of an induction motor and full-load speed is known as ______. slip slid off beat under performance none of the answers provided An increase in the number of poles in a number results in ______. lower RPM higher RPM no change in speed since it is dependent on frequency no change in speed since it is dependent on load none of the answers provided The insulation class that can tolerate higher temperature than Class B is ______. Class A Class E Class F all of the answers provided none of the answers provided The insulation system class of most electric motors is rated for ______ hours of life. 5,000 10,000 15,000 20,000 none of the answers provided A KVA code letter indicates the ______. inrush current per hp. size of the short circuit protectors size of the overcurrent protectors size of the thermal overloads none of the answers provided A normal-starting-torque motor would have a design letter of ______. A B C D E A type of thermal protection device is known as a ______ device. manual single shot double shot semi-auto none of the answers provided A UL-approved manual reset thermal protector would be ______. Type A Type C Type M Type T Type J The service factor represents the motor’s ability to handle temporary higher loads. Which of the following has the greatest margin of safety? 1.0 1.15 1.25 1.3 1.4