chapter 14 Flashcards
Should an SSOV open wide quickly, a _________________ could result.
a)Over-pressure
b)Furnace puff-back
c)Over-temperature
d)Low water condition
b
The spark electrodes that ignites the burner pilot are typically:
a)10,000 - 12,000 V
b)10,000 - 12,000 A
c)120 V
d) 24 V
a
The type of burner commonly used on packaged boilers is:
a) Barometric burner
b) Ring burner
c) Venturi burner
d) Aspirating burner
b
The main function of a burner is:
a)Ensure mixing of fuel and air
b)Ensure proper furnace pressure
c)Ensure design flue gas temperature
d)Provide draft
a
The most common type of pump used to deliver oil to an oil burner is:
a)Diaphragm
b)Rotary gear
c) Centrifugal
d)Vane
b
On a premix burner, the air provided for complete combustion is called:
a)Premix
b)Theoretical
c)Secondary
d)Primary
c
In a premix burner, the action of drawing air into the burner is termed:
a)Orifice facing
b)Aspirating
c)Pressure
d)Inducing
b
The atomizing air used on a package boiler is delivered at:
a)690 kPa / 100 psi
b)30C / 86F
c)345 kPa / 50 psi
d)103 kPa / 15 psi
d
An intermittent pilot
a) Burns only until the main gas valve is proven
b) Burns continuously even when the main gas valve is de-energized
c) Burns the entire time the main gas valve is energized
d) Is no longer allowed for use on boiler burners
A
In the rotary cup oil atomizing burner, oil is pumped to the inside of a cup that is being rotated:
a)At about 1500 rpm
B)On an eccentric shaft
c)At about 3500 rpm
d)At about 100 rpm
c
Gas burners differ mainly in the way air and fuel mix. The two general classes are:
a) Diffuser and atomizing
b) Atmospheric and primary
c) Power and primary
d) Premix and after-mix
d
An intermittent pilot
a) Burns the entire time the main gas valve is energized
b) Is no longer allowed for use on boiler burners
c) Burns only until the main gas valve is proven
d) Burns continuously even when the main gas valve is de-energized
a
In the rotary cup oil atomizing burner, oil is pumped to the inside of a cup that is being rotated:
a) At about 1500 rpm
b) On an eccentric shaft
c) At about 100 rpm
d) At about 3500 rpm
d
Should an SSOV open wide quickly, a _________________ could result.
a) Over-pressure
b) Furnace puff-back
c) Low water condition
d) Over-temperature
b
The type of oil burner that forces oil through a very fine nozzle port is a _____________ atomizing burner.
a) Steam
b) Rotary cup
c) Centrifugal
d) Mechanical
d
Air that is used to vaporize the fuel for easier burning is called _______ air.
a. secondary
b. primary
c. atmospheric
d. atomizing
d
gas burners that are commonly found on hot water heaters are _________
a. power
b. atmospheric
c. primary
d. secondary
b
the type of pilot burner that is automatically ignited at the start of each burner operation and continues to burn throughout the main burner “on” period is called the _________________ pilot
a. continuous
b. interupted
c. standing
d. intermittent
d
a type of valve used as a shut-off valve in pilot and main burner supply lines that uses an electromagnetic coil to activate it is a_________valve
a. check
b. globe
c. motorized
d. solenoid
d
before light oil can be burned properly it must be ________
a. heated
b. pasturized
c. switled
d. atomized
d
the type of oil burner that forces the oil through a very fine nozzle port is a _________ burner
a. rotary cup
b. mechanical
c. steam atomizing
d. centrifugal
b
the result of an automatic gas valve opening too quickly is called a _________
a. light-off
b. boiler explosion
c. pressure explosion
d. puff back
d
heavy oil must be heated to approximately _________ before they can be atomized
a. 95 c
b. 59 c
c. 125 c
d. 165 c
a
an oil storage tank must be located at least _______ away from the furnace
a. 1m (3.3 ft)
b. 1.5m (4.9 ft)
c. 0.6m (2 ft)
d.3m (9.8 ft)
c