Special Boiler Minnesota License Practice Exam Graded A+

How many way can heat be transferred? - ANSWER-Three (Conduction -- Convection -- Radiation) How may types of low pressure are there? - ANSWER-Three Boiler and boiler fitting used in the state of Minnesota must be constructed to what code? - ANSWER-A.S.M.E What controls the starting ans stopping of the burner by sending the temperature of the water in a hot water boiler? - ANSWER-Aqua Stat When a hydrostatic test of a boiler exceeds the maximum allowed working pressure each safety valve, if left attached to the boiler, should: - ANSWER-Have its valve disc held to its seat by means of testing clamp or "gag" Heat can be transferred in three ways and they are: - ANSWER-Conduction --Convection - Radiation The first sequence in the series of automatic burner control is: - ANSWER-Purging Can a low water low water condition i a hot water heating type boiler? - ANSWER-Yes, for numerous reasons Other than a safety relieve valve what other safety device should be installed on a hot water heating boiler? - ANSWER-Low water cut off Each boiler in a battery (pipe together sharing the same common header) must have: - ANSWER-A main stem stop what removes air from a hot water boiler system? - ANSWER-Air Control In a stem boiler system, the unit that turns be burner on and off based on steam pressure is the: - ANSWER-Pressure Control If water in the gauge is not visible because of failure of the feed water supply, what should be done? - ANSWER-Shut off the fuel to the burner and secure the boiler. What conditions are necessary to cause a furnace explosion? - ANSWER-Accumulation of unburned fuel, oxygen and an ignition source The LWCO should be tested: - ANSWER-Daily