MASTER PLUMBER PAST BOARD EXAM QUESTIONS SET 1 questions with answers

MASTER PLUMBER PAST BOARD EXAM |\ |\ |\ |\ |\




QUESTIONS SET 1 questions with answers |\ |\ |\ |\ |\




Of the four board subjects given for Master Plumbers examination, which of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



this subject was originally split into two subjects?
|\ |\ |\ |\ |\ |\ |\




A. Plumbing Code
|\ |\




B. Design and Installations
|\ |\ |\




C. Plumbing Arithmetic
|\ |\




D. Practical Problems - CORRECT ANSWERS ✔✔D
|\ |\ |\ |\ |\ |\




Copper tube and fittings used for drainage and vent piping installed
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



aboveground shall be at least ____. |\ |\ |\ |\ |\




A. Type DWV
|\ |\ |\




B. Type L
|\ |\




C. Type K
|\ |\




D. Type M - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\ |\




A domestic dishwasher drain shall first connect to ____.
|\ |\ |\ |\ |\ |\ |\ |\




A. an approved airgap fitting
|\ |\ |\ |\




B. a double-check valve
|\ |\ |\

,C. a triple-check valve
|\ |\ |\




D. an approved valve - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\ |\ |\




Unions shall be installed in a water supply system within ____ to a water
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



heater



A. 36 inches
|\ |\




B. 12 inches
|\ |\




C. 24 inches
|\ |\




D. 48 inches - CORRECT ANSWERS ✔✔B
|\ |\ |\ |\ |\ |\




A branch line serving a trap in a combination waste and vent system is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



required to be separately vented when the length of the branch exceeds ____.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\




A. 15 |\




B. 10
|\




C. 5
|\




D. 25 - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\




Three-inch horizontal drainage piping shall be run in practical alignment
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



and at a uniform slope of not less than:
|\ |\ |\ |\ |\ |\ |\ |\




A. 1/4 inch per foot
|\ |\ |\ |\




B. 1/16 inch per foot
|\ |\ |\ |\ |\

,C. 1/2 inch per foot
|\ |\ |\ |\ |\




D. 1/8 inch per foot - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\ |\ |\ |\




The minimum requirement for the slope of horizontal drainage pipes
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



between manholes is |\ |\




A. 4% |\




B. 2-1/2 %
|\ |\




C. 2%
|\ |\




D. 3% - CORRECT ANSWERS ✔✔C
|\ |\ |\ |\ |\




A drain connecting the compartments of a set of fixtures to its trap is called
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



a(an) ____. |\




A. continuous waste
|\ |\ |\




B. special waste
|\ |\




C. indirect waste
|\ |\ |\




D. combination waste and vent - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\ |\ |\ |\




The maximum number of lavatories on a 2-1/2 inch horizontal waste line is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



____.



A. 10 |\




B. 14
|\

, C. 20|\




D. 6 - CORRECT ANSWERS ✔✔B
|\ |\ |\ |\ |\




The maximum distance a gas shutoff valve may be from a gas appliance
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



(except for range and dryer connectors) is ____.
|\ |\ |\ |\ |\ |\ |\




A. 6 feet
|\ |\




B. 10feet
|\




C. 3 feet
|\ |\ |\




D. 2 feet - CORRECT ANSWERS ✔✔A
|\ |\ |\ |\ |\ |\




An ejector discharge line shall be provided with a ____
|\ |\ |\ |\ |\ |\ |\ |\ |\




A. gate valve only
|\ |\ |\




B. backwater valve and gate valve
|\ |\ |\ |\ |\




C. backwater valve only
|\ |\ |\




D. swing check valve and a globe valve - CORRECT ANSWERS ✔✔B
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\




In the water test of the entire plumbing system all openings should be tightly
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



closed except at
|\ |\ |\




A. protruding cleanouts
|\ |\




B. bleeders
|\




C. stack vent
|\ |\