General Maintenance/ BOMA

General Maintenance/ BOMA ____________is not a normal additive in lubrication Hexihydrene ________are used for multigrade oils Polymers A _________ is a direct or in direct connection Which may permit waste sewage or other non-potable water to flow into a potable water source or supply Cross connection A 1/4 bend changes the direction of the pipe 90 degrees A branch steam line take off the main, should come of the: Top of the main A device such as a sink, lavatory, toilet or shower stall is called a fixture A drainage fixture unit (dfu) is equivalent to how many gallons of water flow? 71/2 gallons per minute A foot valve may sometimes be used on the submerged end of the suction pipe of a centrifugal pump; To keep the pump primed A foot valve may sometimes be used on the submerged end of the suction pipe of a centrifugal pump: To keep the pump primed A gate valve would be Used in a application where you need to control the flow of a fluid True A hole is to be drilled in a part. How can the dimensions of the hole be indicated most conveniently on a drawing of the part? A brief note connected by a leader to the hole A horse power is equal to_______ foot lbs. per minute 33,000 A plane journal bearing operating at a slow speed should be lubricated With oil having a high viscosity A sprinkler head that is mounted in an inverted position is called Pendent, Conventional, Flush Pendant( all of the above) A standard grade, pitch, fall, or slope of a horizontal drainage system should not exceed 1/4" per foot A well used to fill a corner, as in a lap joint or a T joint, is called Fillet weld Absolute pressure is Gauge Pressure plus 14.7 psi And oxygen/acetylene system is used for the following purposes Silver soldering copper and brass joints, cutting metal, brazing (all of the above) Baffles in a greased interceptor reduce____________ within interceptor Turbulence Before a second bead is laid over or next to a just completed bead in arch welding, the weld area must be: Cleaned to remove all slag Black iron pipe is often used for: Steam heating, Gas and air pressure piping, hot water heating (all of the above) Branch fittings are identified by right and left by holding the inlet towards the observer with outlet down Brazed cast fittings should be cooled Slowly Class A fires are those of ordinary combustible materials such as wood, paper and cloth where cooling, soaking or coating of the burning materials is essential True Consumable metallic electrodes used ac arc welding are usually of what type Heavily coated