Power Engineer Class 4 Part B All Questions With Complete
Solutions
_____ are installed to prevent hot oil from spreading beyond the
confines of a hot oil heater in the event of a ruptured tube.
Correct Answers Dikes
_____ are often used to aid the return of condensate through the
return piping of large complexes. Correct Answers Vacuum
pumps
__________ dampers have the blades linked so the adjacent
blades rotate in opposite directions. Correct Answers Opposed
blade
___________ dampers are controlled in such a way that they are
either fully open or fully closed. Correct Answers Two-position
___________ is used to expel air from the risers and main
headers of the steam heating system. Correct Answers An
automatic air vent
_______________ causes the fuel to ignite in a diesel engine.
Correct Answers The high temperature compressed air in the
engine cylinder.
"Barking", as it occurs in a pulp mill, means: Correct Answers
The removal of bark from the logs
"Laying up" a boiler means: Correct Answers Preparing the
boiler for a period of storage
,"SOP" stands for Correct Answers Standard Operating
Procedure
A _____ system uses a thermal fluid in place of steam or water,
to conduct heat from a central source to other vessels and
heating coils in a plant. Correct Answers Hot oil
A ________ is a fired heater installed where the heat is needed,
that heats the air directly without the use of any ducting. Correct
Answers Unit heater
A ball peen hammer is sometimes called a: Correct Answers
Machinist's hammer
A blowdown ring is used on a safety valve to: Correct Answers
Adjust the differential between opening and closing pressures
A boiler boil-out Correct Answers is done with an alkaline
solution.
A boiler feedwater isolation valve: Correct Answers May be a
globe valve, provided water enters below the disc
A boiler furnace pre-purge: Correct Answers Must last a
specific amount of time.
A boiler has an M-alkalinity that is greater than the prescribed
control range. What is the appropriate operator response?
Correct Answers Increase the rate of continuous blowdown.
,A boiler pressure explosion is NOT caused by: Correct Answers
Insufficient combustion air
A boiler pressure explosion: Correct Answers May be caused
by a low water condition
A boiler with a single safety valve has a maximum allowable
working pressure of 1000 kPa. What is the maximum boiler
pressure permissible when the safety valve is blowing? Correct
Answers 1060 kPa
A buried ventilation duct in an older building draws air from a
chemistry lab fume hood. The duct would likely be constructed
of Correct Answers Cement asbestos
A centrifugal pump consists of: Correct Answers An impeller
surrounded by a casing
A chemical dot placed under the lens of a sight glass that is
exposed to liquid refrigerant monitors Correct Answers The
presence of moisture in the refrigerant
A circulating pump, known as a cooling water pump, is usually
connected with Correct Answers some type of heat exchanger
system
A closed cycle gas turbine: Correct Answers Recycles the same
working fluid
, A cold weather cooling tower bypass valve should not be fully
closed until the temperature reaches: Correct Answers about
27°C
A collar thrust bearing: Correct Answers Has boundary
lubrication
A common cause of antifriction bearing failure is: Correct
Answers Shaft misalignment
A common plumbing trap has a water seal depth of: Correct
Answers 5 cm
A common way to determine the mass of an object to be hoisted
is by determining its Correct Answers Density and volume
A compression refrigeration system can be divided into two
sections: a high pressure section containing the head pressure
and a low pressure section carrying the _____ pressure: Correct
Answers Suction
A compression refrigeration system may be pumped down for
which of the following reasons? Correct Answers To perform
maintenance on the low-pressure side of the system.
A conductivity meter is used to measure the: Correct Answers
Total Dissolved Solids
A control room operator notices that the stack temperature of a
hot oil heater is increasing rapidly. The operator should: Correct
Answers Activate the emergency shutdown.
Solutions
_____ are installed to prevent hot oil from spreading beyond the
confines of a hot oil heater in the event of a ruptured tube.
Correct Answers Dikes
_____ are often used to aid the return of condensate through the
return piping of large complexes. Correct Answers Vacuum
pumps
__________ dampers have the blades linked so the adjacent
blades rotate in opposite directions. Correct Answers Opposed
blade
___________ dampers are controlled in such a way that they are
either fully open or fully closed. Correct Answers Two-position
___________ is used to expel air from the risers and main
headers of the steam heating system. Correct Answers An
automatic air vent
_______________ causes the fuel to ignite in a diesel engine.
Correct Answers The high temperature compressed air in the
engine cylinder.
"Barking", as it occurs in a pulp mill, means: Correct Answers
The removal of bark from the logs
"Laying up" a boiler means: Correct Answers Preparing the
boiler for a period of storage
,"SOP" stands for Correct Answers Standard Operating
Procedure
A _____ system uses a thermal fluid in place of steam or water,
to conduct heat from a central source to other vessels and
heating coils in a plant. Correct Answers Hot oil
A ________ is a fired heater installed where the heat is needed,
that heats the air directly without the use of any ducting. Correct
Answers Unit heater
A ball peen hammer is sometimes called a: Correct Answers
Machinist's hammer
A blowdown ring is used on a safety valve to: Correct Answers
Adjust the differential between opening and closing pressures
A boiler boil-out Correct Answers is done with an alkaline
solution.
A boiler feedwater isolation valve: Correct Answers May be a
globe valve, provided water enters below the disc
A boiler furnace pre-purge: Correct Answers Must last a
specific amount of time.
A boiler has an M-alkalinity that is greater than the prescribed
control range. What is the appropriate operator response?
Correct Answers Increase the rate of continuous blowdown.
,A boiler pressure explosion is NOT caused by: Correct Answers
Insufficient combustion air
A boiler pressure explosion: Correct Answers May be caused
by a low water condition
A boiler with a single safety valve has a maximum allowable
working pressure of 1000 kPa. What is the maximum boiler
pressure permissible when the safety valve is blowing? Correct
Answers 1060 kPa
A buried ventilation duct in an older building draws air from a
chemistry lab fume hood. The duct would likely be constructed
of Correct Answers Cement asbestos
A centrifugal pump consists of: Correct Answers An impeller
surrounded by a casing
A chemical dot placed under the lens of a sight glass that is
exposed to liquid refrigerant monitors Correct Answers The
presence of moisture in the refrigerant
A circulating pump, known as a cooling water pump, is usually
connected with Correct Answers some type of heat exchanger
system
A closed cycle gas turbine: Correct Answers Recycles the same
working fluid
, A cold weather cooling tower bypass valve should not be fully
closed until the temperature reaches: Correct Answers about
27°C
A collar thrust bearing: Correct Answers Has boundary
lubrication
A common cause of antifriction bearing failure is: Correct
Answers Shaft misalignment
A common plumbing trap has a water seal depth of: Correct
Answers 5 cm
A common way to determine the mass of an object to be hoisted
is by determining its Correct Answers Density and volume
A compression refrigeration system can be divided into two
sections: a high pressure section containing the head pressure
and a low pressure section carrying the _____ pressure: Correct
Answers Suction
A compression refrigeration system may be pumped down for
which of the following reasons? Correct Answers To perform
maintenance on the low-pressure side of the system.
A conductivity meter is used to measure the: Correct Answers
Total Dissolved Solids
A control room operator notices that the stack temperature of a
hot oil heater is increasing rapidly. The operator should: Correct
Answers Activate the emergency shutdown.
