10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The WI-MP exam has 242 questions and runs 8 hours.
These 10 free WI-MP questions are organized by exam domain, so you can see how each part of the Wisconsin Master Plumber License Examination blueprint is tested. Reveal the answer and explanation under each question.
A Wisconsin Journeyman Plumber documents 1,240 hours in the first qualifying year, 980 hours in the second, and 1,315 hours in the third. The applicant has no qualifying engineering degree. Which conclusion is correct?
Correct answer: C - The applicant does not qualify because each of the three years must reach 1,000 hours
An ice-machine drain tube terminates below the receptor's flood-level rim but above the receptor's trap seal. The arrangement has no direct connection to the drainage system. What is this separation called?
Correct answer: A - An air break
A 44-foot run of 2-inch horizontal sanitary drain begins at invert elevation 101.50 feet and ends at 100.50 feet. Wisconsin requires at least 1/4 inch of fall per foot for this pipe size. How should the installation be evaluated?
Correct answer: D - It complies; the actual fall is approximately 0.273 inch per foot
A public-building sanitary sump receives two public water closets plus other fixtures for a total connected load of 22 DFU. What pumping arrangement is required?
Correct answer: B - Duplex pumping equipment, because the connected load exceeds 20 DFU
A nonpublic bathroom group uses the lavatory drain as a horizontal wet vent for two showers and two water closets. Pipe sizes and fixture ordering meet the wet-vent provisions. A separately vented laundry tray also discharges into the wet-vented section. Which revision preserves the bathroom-group wet vent?
Correct answer: B - Move the separately vented laundry connection downstream of the wet-vented section
An air-admittance valve test begins at 1.00 inch of water column. After one minute, the gauge reads 0.65 inch; a pressure drop of no more than 0.50 inch is permitted. How should the result be interpreted?
Correct answer: D - Pass it because the pressure loss is 0.35 inch
At design flow, a remote fixture is 32 feet above the water-service entry. Available pressure is 74 psi; elevation loss is 0.433 psi per foot, device losses total 9 psi, piping losses total 15 psi, and the fixture requires 20 psi residual. What does the completed pressure budget show?
Correct answer: A - About 36 psi remains, so the fixture meets the required residual pressure
A new private water main was disinfected at 200 ppm chlorine for three hours, then flushed. The contractor collected the bacteriological sample eight hours after the disinfection period ended. What should occur next?
Correct answer: C - Collect a new sample no sooner than 24 hours after disinfection was completed
A chemical-feed connection presents a high health hazard, and downstream pressure can exceed the potable-water supply pressure. Which backflow-prevention assembly is appropriate for both the hazard and the hydraulic condition?
Correct answer: C - Reduced-pressure principle assembly
A reduced-pressure principle assembly passed its installation test. Nine months later, a leaking shutoff valve on the assembly is replaced. Before the protected line returns to normal operation, the plumber must:
Correct answer: B - Have the assembly performance-tested immediately after the repair
The full bank has 1,020 more WI-MP questions with explanations.
Continue in the free practice test →
View plans