150Q ABSA 4B Practice

, 1 of 42

Term



Excess Sulphite is necessary to prevent



A)
sludging


B)
pitting


C)
acidity


D)
hardness


E)
carry over



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B)
Defective steam traps
try the lifting lever




B)
At the crankshaft
pitting


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, 2 of 42

Term


Thermal conductivity (λ) may be defined as the:



A)
Reciprocal of thermal conductance (m°C/W)


B)
Thermal transmission through a unit area of a particular body with
defined surfaces (W/m2°C)


C)
Thermal transmission through a unit area of a particular body where
the difference between temperatures on either side of the body is
unity (W/m2°C)


D)
Thermal transmission through a unit area of homogeneous material
(W/m°C)


E)
Quantity of heat flow in unit time (Q or W)



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B)
Thermal transmission through
Difference between the static
a unit area of homogeneous
suction head and the static
material (W/m°C)
discharge head

, B)
the safety relief valve opens
The coils distribute steam evenly
repeatedly
over the entire coil


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3 of 42

Term



In the evaporator:



A)
The refrigerant rejects heat to the cooling tower


B)
The refrigerant absorbs heat from the surrounding medium


C)
The refrigerant absorbs heat from the compressor cooling system


D)
The surrounding medium evaporates


E)
The refrigerant is condensed



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