Safeway Practice Test – Minnesota Driver’s License
Exam Preparation
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
,age 2 of 17
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
, age 3 of 17
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