ABSA B1 STUDY BANK [2025] 424 SET OF QUESTIONS &
CORRECT VERIFIED ANSWERS EXPERT 100% VERIFIED
SOLUTION
1. According to their method of operation, pumps can be divided into three
main classes. These are
a. Direct acting, power driven, plunger type
b. Single acting, double acting, triplex
c. Centrifugal, rotary, reciprocating
d. Three lobe, two screw, internal gear
e. Centrifugal, centripedal, impulse CORRECT ANS >> c
2. Packaged watertube boilers capacities range from?
a. 2300 kg to 65000 kg per hour
b. 500 kg to 100 mg per hour
c. 15 psi to 15000 kg per hour
d. 65000 to 100000 kg per hour CORRECT ANS >> A
3. The main advantage of the packaged boiler is its
a. small size
b. compact design
c. low cost
D. quality steam CORRECT ANS >> C
4. Feild erected boilers have outputs of?
,A 75,000 kg/h
B 100,000 kg/h
C 100 mg/h
D 150,000 kg/h or more CORRECT ANS >> D
5. Where electric power is used as a heating source, the boiler rating shall be the
maximum kilowatt rating of the
A Power plant
B Heating element
C Boiler wiring
D MCC CORRECT ANS >> B
6. The downcomers are located in the regions of the boiler, or external to
the furnace all together. The risers are located in the zones of the boiler
being exposed to radiant heat of the furnace or very hot flu gases near the
furnace
,A Back, front
B Cooler, hottest
C Water, furnace
D Drum, radiant CORRECT ANS >> B
7. The steam separating equipment separates the from the steam/water
mixture
A Water
B Steam
C Impurities
D Water droplets CORRECT ANS >> B
8. There are several factors that influence the natural circulation in a watertube
boiler. These are CORRECT ANS >>
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 CORRECT ANS >> E
9. The purpose of the downcomer is to supply CORRECT ANS >>
A Hot water to the steam drum
B Cool water to the steam drum
3 B/ B
191
, C Cool water from the steam drum to the rest of the boiler
B B B B B B B B B B B B
D Steam to the steam drum
B B B B B
E Boiler feed water to the boiler
B B B B B B CORRECT BANS B>> B B C
B
10. These types of boilers [A, D, and O] have furnaces cooled by
B B B B B B B B B B B lining the
B
Bfurnace walls B
A Watertubes
B
B Fans B
C Desuperheaters
B
D Air circulation CORRECT
B B B B ANS B>> B B A
4 B/ B
191
CORRECT VERIFIED ANSWERS EXPERT 100% VERIFIED
SOLUTION
1. According to their method of operation, pumps can be divided into three
main classes. These are
a. Direct acting, power driven, plunger type
b. Single acting, double acting, triplex
c. Centrifugal, rotary, reciprocating
d. Three lobe, two screw, internal gear
e. Centrifugal, centripedal, impulse CORRECT ANS >> c
2. Packaged watertube boilers capacities range from?
a. 2300 kg to 65000 kg per hour
b. 500 kg to 100 mg per hour
c. 15 psi to 15000 kg per hour
d. 65000 to 100000 kg per hour CORRECT ANS >> A
3. The main advantage of the packaged boiler is its
a. small size
b. compact design
c. low cost
D. quality steam CORRECT ANS >> C
4. Feild erected boilers have outputs of?
,A 75,000 kg/h
B 100,000 kg/h
C 100 mg/h
D 150,000 kg/h or more CORRECT ANS >> D
5. Where electric power is used as a heating source, the boiler rating shall be the
maximum kilowatt rating of the
A Power plant
B Heating element
C Boiler wiring
D MCC CORRECT ANS >> B
6. The downcomers are located in the regions of the boiler, or external to
the furnace all together. The risers are located in the zones of the boiler
being exposed to radiant heat of the furnace or very hot flu gases near the
furnace
,A Back, front
B Cooler, hottest
C Water, furnace
D Drum, radiant CORRECT ANS >> B
7. The steam separating equipment separates the from the steam/water
mixture
A Water
B Steam
C Impurities
D Water droplets CORRECT ANS >> B
8. There are several factors that influence the natural circulation in a watertube
boiler. These are CORRECT ANS >>
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 CORRECT ANS >> E
9. The purpose of the downcomer is to supply CORRECT ANS >>
A Hot water to the steam drum
B Cool water to the steam drum
3 B/ B
191
, C Cool water from the steam drum to the rest of the boiler
B B B B B B B B B B B B
D Steam to the steam drum
B B B B B
E Boiler feed water to the boiler
B B B B B B CORRECT BANS B>> B B C
B
10. These types of boilers [A, D, and O] have furnaces cooled by
B B B B B B B B B B B lining the
B
Bfurnace walls B
A Watertubes
B
B Fans B
C Desuperheaters
B
D Air circulation CORRECT
B B B B ANS B>> B B A
4 B/ B
191
