Power Engineering 3B1 Exam Review Questions With
Complete Solutions
There are several factors that influence the natural
circulation in a watertube boiler. These are:
Select one:
A. The height of the steam drum above the bottom drum or
header.
B. The amount of heat applied to the tube. The hotter the
tube becomes, the more steam bubbles are formed, creating
more mass differential and thus more circulation.
C. The operating pressure of the boiler. As boiler pressures
increase, the density of the steam increases.
D. The cleanliness of the tubes can also affect circulation.
E. All of the above
E
According to the AWS Classification system for low carbon
steel electrodes, and using E7018 as the example. What does
the ‘1’ signify?
Select one:
A. welding position
B. tensile strength
C. electrode coating, current and polarity
,D. metal thickness
A
A simple blowdown system involves control that is totally
reliant on the _______ .
Select one:
A. effluent
B. chemicals
C. conductivity
D. operator
D
The __________ fan is used to remove the hot flue gases
from the boiler.
Select one:
A. induced draft
B. forced draft
C. cross draft
D. balanced draft
A
The mixed bed exchanger is a mixture of strong acid cation
and strong base anion _____.
Select one:
A. chemical
,B. ion
C. composition
D. resin
D
Efficient control of boiler blowdown is an important
objective in the operation of most boilers.
Select one:
True
False
A
According to ASME Code Section VIII, Division 1, an
unfired pressure vessel is a container having a design
pressure between ____ kPa and 20 Mpa and does not
contain an integral source of heat.
Select one:
A. 3000
B. 100
C. 20
D. 15
B
High-speed impact pulverizers (turning at 1200 to 1800
r/min) consist of a series of hinged or fixed _______
revolving in a chamber.
, Select one:
A. balls
B. weights
C. hammers
D. wheels
C
The pressure at the discharge of a water pump is 150 kPa
and the temperature of the water is 80°C. Find the
equivalent head in metres.
Select one:
A. 20.21 m
B. 12.55 m
C. 18m
D. 15.73 m
D
A simple gauge for measuring draft consists of a glass U-
tube containing water. This type of gauge is known as a
_________.
Select one:
A. manometer
B. orsat
C. pressuretube
Complete Solutions
There are several factors that influence the natural
circulation in a watertube boiler. These are:
Select one:
A. The height of the steam drum above the bottom drum or
header.
B. The amount of heat applied to the tube. The hotter the
tube becomes, the more steam bubbles are formed, creating
more mass differential and thus more circulation.
C. The operating pressure of the boiler. As boiler pressures
increase, the density of the steam increases.
D. The cleanliness of the tubes can also affect circulation.
E. All of the above
E
According to the AWS Classification system for low carbon
steel electrodes, and using E7018 as the example. What does
the ‘1’ signify?
Select one:
A. welding position
B. tensile strength
C. electrode coating, current and polarity
,D. metal thickness
A
A simple blowdown system involves control that is totally
reliant on the _______ .
Select one:
A. effluent
B. chemicals
C. conductivity
D. operator
D
The __________ fan is used to remove the hot flue gases
from the boiler.
Select one:
A. induced draft
B. forced draft
C. cross draft
D. balanced draft
A
The mixed bed exchanger is a mixture of strong acid cation
and strong base anion _____.
Select one:
A. chemical
,B. ion
C. composition
D. resin
D
Efficient control of boiler blowdown is an important
objective in the operation of most boilers.
Select one:
True
False
A
According to ASME Code Section VIII, Division 1, an
unfired pressure vessel is a container having a design
pressure between ____ kPa and 20 Mpa and does not
contain an integral source of heat.
Select one:
A. 3000
B. 100
C. 20
D. 15
B
High-speed impact pulverizers (turning at 1200 to 1800
r/min) consist of a series of hinged or fixed _______
revolving in a chamber.
, Select one:
A. balls
B. weights
C. hammers
D. wheels
C
The pressure at the discharge of a water pump is 150 kPa
and the temperature of the water is 80°C. Find the
equivalent head in metres.
Select one:
A. 20.21 m
B. 12.55 m
C. 18m
D. 15.73 m
D
A simple gauge for measuring draft consists of a glass U-
tube containing water. This type of gauge is known as a
_________.
Select one:
A. manometer
B. orsat
C. pressuretube
