Pipefitter Star Exam Part 1| Questions and correct answers| Latest

Pipefitter Star Exam Part 1| Questions and correct answers| Latest Violent flashing and collapsing of vapor bubbles in a centrifugal pump is called. Cavitation Device that controls the pressure in a low pressure steam boiler Pressuretrol Function of an evaporator Absorb heat from the system Metal which has a high iron content ferrous Why should the angle between the leg of a swing and the load never be less than 30 degrees? More stress loads are applied on the sling What are two kinds of misalignment that must be checked for when installing pumps? Parallel and angular alignment What is the function of a compressor? Create flow in the system After fittings and tubes are cleaned and fluxed, they should be assembled and soldered As soon as possible The relief valve is sized to the ________ rating of a boiler Gross Output Four types of copper tube joints Soldered, Brazed, Flared, Compression Most common hanger type Clevis Which hitch can support the most weight? Basket Hitch Minimum safe working distance for overhead power lines 10 feet Three basic hitches which can be used for lifting with a sling Straight, Choker, Basket Amount of heat required to bring about a change in a state in a substance Latent heat Harmful products of incomplete combustion Carbon Monoxide & Aldehydes Regulating or throttling flow is done with Globe 4 main components in a refrigeration system Compressor, Condenser, Evaporator, Metering device. Quanting of heat involved to change a substance that can be measured with a thermometer Sensible heat Main advantage of a fluidized bed boiler Low SO & NOx emissions Two basic types of low-water cutoffs Float type and electric probe Measurement unit used to express rate of flow Velocity Weakest part of a chain hoist Lower Hook Four principle functions of valves Start/Stop, Regulate/Throttle, Relief, Reduce Oxyacetylene flame has a peak temperature of approximately