POWER ENGINEERING 3B2 - CHAPTER
3 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
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 - ANS E
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
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,c. 1, 2, 3
d. 2, 3
e. 3, 1 - ANS C
In a steam turbine condenser the temperature difference from exhaust steam to cooling water
will:
a. Remain the same under all loads
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 - ANS C
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 - ANS B
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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, c. inversely proportional to the level of dissolved oxygen
d. impeded
e. reduced - ANS B
The _______________ cooling water is in direct contact with the turbine exhaust steam.
a. down flow condenser
b. central flow condenser
c. radial flow condenser
d. jet condenser
e. air ejector - ANS D
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 - ANS D
The purposes of a surface condenser is to:
1) Maintain a vacuum at the turbine exhaust
2) Conserve pure boiler feedwater
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
3 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
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 - ANS E
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
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,c. 1, 2, 3
d. 2, 3
e. 3, 1 - ANS C
In a steam turbine condenser the temperature difference from exhaust steam to cooling water
will:
a. Remain the same under all loads
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 - ANS C
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 - ANS B
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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, c. inversely proportional to the level of dissolved oxygen
d. impeded
e. reduced - ANS B
The _______________ cooling water is in direct contact with the turbine exhaust steam.
a. down flow condenser
b. central flow condenser
c. radial flow condenser
d. jet condenser
e. air ejector - ANS D
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 - ANS D
The purposes of a surface condenser is to:
1) Maintain a vacuum at the turbine exhaust
2) Conserve pure boiler feedwater
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
