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ILLINOIS CLASS D WATER LICENSE NEWEST
2025 ACTUAL EXAM COMPLETE 150
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
Question 1: The water service line for a single family dwelling
is most likely how many inches in size?
Correct answer: 3/4 inch
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Question 2: AWWA Standards require that new water meters for
single family home be what percent accurate?
Correct answer: 98.5 - 101.5
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Question 3: Water meters for single family homes are most
likely to?
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Correct answer: under register
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Question 4: If a meter to a residence is located in the basement
what item should be located between the water main and the house?
Correct answer: curb stop
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Question 5: Large water meters should be tested every?
Correct answer: 1 - 4 years
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Question 6: The water meter reader notices that water use for a
remote reading system is far below normal
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Correct answer: check the inside meter reading
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Question 7: For a water meter, a reading system is most likely to
be used when the water meter is
Correct answer: inside the house
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Question 8: Grease should be added to a pump motor until
Correct answer: new grease comes out of the grease plug
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Question 9: After the pump bearing have been greased. The
bearing drain plug should be
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Correct answer: reinstalled after the pump has run for 20
minutes
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Question 10: If a pump is cavitating, the cavitation can be
stopped by
Correct answer: partially closing the pump discharge valve
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Question 11: During pump operation, water lubricated pump
packing should
Correct answer: leak water at a steady dripping rate
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Question 12: For most centrifugal pumps, if the total dynamic
head decreased the pump will