4B POWER ENGINEERING
COMPREHENSIVE QUESTIONS AND
COMPLETE SOLUTIONS TEST PAPER
●● To increase the service life of ____ installed in a boiler it should
have a solution of heat resistant cement wash coated on it.
outlet piping
flue stack
insulation
inlet piping
furnace refractory
Answer: furnace refractory
●● 2,000 kPa is the approximate ____ used to initial start the large
diesel engine rotation.
water jacket circulation pressure
lubrication oil pressure
filter media pressure
fuel atomization pressure
,compressed air supply pressure
Answer: compressed air supply pressure
●● Comparing radiant panel heating to conventional heating systems,
radiant panel heating has the following advantage(s).
All of the above
Improved heat distribution throughout the room
Heating elements are out of site improving visual appeal and functional
use of the space
Increased comfort when heated floor panels are installed
Answer: All of the above
●● On a power boiler the operating pressure switch should be tested?
Weekly
Monthly
There is no testing frequency required. Ensure it operates properly
Daily
Beginning of each shift
Answer: There is no testing frequency required. Ensure it operates
properly
,●● Boiler ____ is required to be the same full size right to the point of
discharge.
gauge glass piping
boiler feedwater inlet piping
steam header piping
vent piping
blowoff piping
Answer: blowoff piping
●● ____ is the numerical result of the static head plus the total friction
head in the piping plus the velocity head.
Dynamic head
Total head
Friction head
Dynamic suction lift
Answer: Dynamic head
●● The boiler pressure must be at least ____ the safety valve popping
pressure prior to operating the try lever.
, 50%
25%
90%
75%
80%
Answer: 75%
●● If a proper boiler boil-out is not completed prior to putting a boiler
into service which of the following operating conditions may occur:
All of the above
The water level control(s) may experience issues
Overheating and tube failure
Sensing lines for attached pressure gauges may become plugged
Sensing lines for attached instruments may become plugged
Answer: All of the above
●● Mechanical seals are commonly installed on pumps:
To eliminate the maintenance requirements
To eliminate the requirements for a pressure gauge
For improved sealing capabilities when compared to traditional packing
COMPREHENSIVE QUESTIONS AND
COMPLETE SOLUTIONS TEST PAPER
●● To increase the service life of ____ installed in a boiler it should
have a solution of heat resistant cement wash coated on it.
outlet piping
flue stack
insulation
inlet piping
furnace refractory
Answer: furnace refractory
●● 2,000 kPa is the approximate ____ used to initial start the large
diesel engine rotation.
water jacket circulation pressure
lubrication oil pressure
filter media pressure
fuel atomization pressure
,compressed air supply pressure
Answer: compressed air supply pressure
●● Comparing radiant panel heating to conventional heating systems,
radiant panel heating has the following advantage(s).
All of the above
Improved heat distribution throughout the room
Heating elements are out of site improving visual appeal and functional
use of the space
Increased comfort when heated floor panels are installed
Answer: All of the above
●● On a power boiler the operating pressure switch should be tested?
Weekly
Monthly
There is no testing frequency required. Ensure it operates properly
Daily
Beginning of each shift
Answer: There is no testing frequency required. Ensure it operates
properly
,●● Boiler ____ is required to be the same full size right to the point of
discharge.
gauge glass piping
boiler feedwater inlet piping
steam header piping
vent piping
blowoff piping
Answer: blowoff piping
●● ____ is the numerical result of the static head plus the total friction
head in the piping plus the velocity head.
Dynamic head
Total head
Friction head
Dynamic suction lift
Answer: Dynamic head
●● The boiler pressure must be at least ____ the safety valve popping
pressure prior to operating the try lever.
, 50%
25%
90%
75%
80%
Answer: 75%
●● If a proper boiler boil-out is not completed prior to putting a boiler
into service which of the following operating conditions may occur:
All of the above
The water level control(s) may experience issues
Overheating and tube failure
Sensing lines for attached pressure gauges may become plugged
Sensing lines for attached instruments may become plugged
Answer: All of the above
●● Mechanical seals are commonly installed on pumps:
To eliminate the maintenance requirements
To eliminate the requirements for a pressure gauge
For improved sealing capabilities when compared to traditional packing
