Page 1 of 265
ABSA 3B2 EXAM QUESTION BANK ALL WITH 550
QUESTIONS AND CORRECT DETAILED SOLUTIONS
JUST RELEASED
260. Heat transfer takes place from a ________:
a. hotter to a cooler body except in refrigeration
b. hotter to cooler if the pressure on hot body is higher
c. cooler to a hotter body
d. cooler to a hotter body
e. hotter to a cooler body
e. hotter to a cooler body
261. The rate of heat transfer will depend on:
1) Temperature difference
2) Thermal resistance to heat flow at the material separating
the two fluids
3) Area of transmitting surface
a. 1
b. 1, 2
c. 1, 2, 3
d. 2, 3
e. 3, 1
c. 1, 2, 3
262. In a steam turbine condenser the temperature difference from exhaust steam to cooling
water will:
a. Remain the same under all loads
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b. Increase with a load decrease
c. Increase with a load increase for most loads
d. Remain the same under most loads
e. Decrease with a load increase
c. Increase with a load increase for most loads
263. Power plant thermal efficiencies could be easily doubled by removing the _________ and
using the exhaust steam for heating:
a. hot well
b. condenser
c. feed pump
d. circulating pump
e. deaerator
b. condenser
264. If the cooling water for a condenser, taken from a cooling tower is high in dissolved
oxygen, the ability of the condenser to act as a deaerator is ____________ :
a. directly proportional to the level of dissolved oxygen
b. not impeded
c. inversely proportional to the level of dissolved oxygen
d. impeded
e. reduced
b. not impeded
265. The _______________ cooling water is in direct contact with the turbine exhaust steam:
a. down flow condenser
b. central flow condenser
c. radial flow condenser
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d. jet condenser
e. air ejector
d. jet condenser
266. A _______________ also acts as a deaerator even with the turbine at full load and the
condenser operating at a reduced vacuum:
a. feed pump
b. cooling tower
c. air cooled condenser
d. surface condenser
e. jet condenser
d. surface condenser
267. In a ______________ the feed pump draws from the hot well only the quantity of feed
water required by the boiler, the remainder overflows into the cooling pond where it is cooled
and reused as cooling water:
a. surface condenser
b. counterflow condenser
c. down flow condenser
d. radial flow condenser
e. jet condenser
d. radial flow condenser
268. The purposes of a surface condenser is to:
1) Maintain a vacuum at the turbine exhaust
2) Conserve pure boiler feedwater
3) Act as a deaerator
4) Cool the condensate below saturation temperature
a. 1, 2, 3
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b. 2, 3, 4
c. 1, 2, 4
d. 1, 3, 4
e. 1, 2, 3, 4
a. 1, 2, 3
269. A surface condenser may be ________________ :
1) oval
2) triangular
3) cylindrical
4) rectangular
5) hexagon
a. 1, 2, 3
b. 2, 3, 4
c. 3, 4, 5
d. 1, 2, 5
e. 1, 3, 4
e. 1, 3, 4
270. Condenser tube plates can be installed with __________:
1) ferrules
2) metallic or fiber packings
3) roll expanding
4) combination of roll expanding and ferrule
5) all of the above
a. 1, 2, 3
b. 2, 3, 4
c. 1, 2, 4
ABSA 3B2 EXAM QUESTION BANK ALL WITH 550
QUESTIONS AND CORRECT DETAILED SOLUTIONS
JUST RELEASED
260. Heat transfer takes place from a ________:
a. hotter to a cooler body except in refrigeration
b. hotter to cooler if the pressure on hot body is higher
c. cooler to a hotter body
d. cooler to a hotter body
e. hotter to a cooler body
e. hotter to a cooler body
261. The rate of heat transfer will depend on:
1) Temperature difference
2) Thermal resistance to heat flow at the material separating
the two fluids
3) Area of transmitting surface
a. 1
b. 1, 2
c. 1, 2, 3
d. 2, 3
e. 3, 1
c. 1, 2, 3
262. In a steam turbine condenser the temperature difference from exhaust steam to cooling
water will:
a. Remain the same under all loads
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b. Increase with a load decrease
c. Increase with a load increase for most loads
d. Remain the same under most loads
e. Decrease with a load increase
c. Increase with a load increase for most loads
263. Power plant thermal efficiencies could be easily doubled by removing the _________ and
using the exhaust steam for heating:
a. hot well
b. condenser
c. feed pump
d. circulating pump
e. deaerator
b. condenser
264. If the cooling water for a condenser, taken from a cooling tower is high in dissolved
oxygen, the ability of the condenser to act as a deaerator is ____________ :
a. directly proportional to the level of dissolved oxygen
b. not impeded
c. inversely proportional to the level of dissolved oxygen
d. impeded
e. reduced
b. not impeded
265. The _______________ cooling water is in direct contact with the turbine exhaust steam:
a. down flow condenser
b. central flow condenser
c. radial flow condenser
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d. jet condenser
e. air ejector
d. jet condenser
266. A _______________ also acts as a deaerator even with the turbine at full load and the
condenser operating at a reduced vacuum:
a. feed pump
b. cooling tower
c. air cooled condenser
d. surface condenser
e. jet condenser
d. surface condenser
267. In a ______________ the feed pump draws from the hot well only the quantity of feed
water required by the boiler, the remainder overflows into the cooling pond where it is cooled
and reused as cooling water:
a. surface condenser
b. counterflow condenser
c. down flow condenser
d. radial flow condenser
e. jet condenser
d. radial flow condenser
268. The purposes of a surface condenser is to:
1) Maintain a vacuum at the turbine exhaust
2) Conserve pure boiler feedwater
3) Act as a deaerator
4) Cool the condensate below saturation temperature
a. 1, 2, 3
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b. 2, 3, 4
c. 1, 2, 4
d. 1, 3, 4
e. 1, 2, 3, 4
a. 1, 2, 3
269. A surface condenser may be ________________ :
1) oval
2) triangular
3) cylindrical
4) rectangular
5) hexagon
a. 1, 2, 3
b. 2, 3, 4
c. 3, 4, 5
d. 1, 2, 5
e. 1, 3, 4
e. 1, 3, 4
270. Condenser tube plates can be installed with __________:
1) ferrules
2) metallic or fiber packings
3) roll expanding
4) combination of roll expanding and ferrule
5) all of the above
a. 1, 2, 3
b. 2, 3, 4
c. 1, 2, 4
