Power engineering Class 4 Part B Exa
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m
e - correct answer✔ ✔ Impulse turbines:
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Choose one answer.
g8 g8
a. are only used with low pressure steam
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b. require large thrust bearings
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c. were invented by Parsons
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d. have large pressure drops across the huckets
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e. have blades with the same steam inlet and outlet angles
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d - correct answer✔ ✔
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The stationary passages of a reaction turbine are called the:
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Choose one answer.
g8 g8
a. Shaft
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b. Rotor
g8 g8
c. Shroud ring
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d. Fixed blades
g8 g8 g8
e. Diaphragms
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,c - correct answer✔ ✔
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The great majority of steam turbine governing systems utili
g8 g8 g8 g8 g8 g8 g8 g8
ze the
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a) hydraulic system principle
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b) pneumatic system principle
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c) mechanical centrifugal principle
g8 g8 g8
d) lever principle
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e) bimetal expansion principle
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e - correct answer✔ ✔
g8 g8 g8
Biological fouling in recirculating cooling water towers is c
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aused by algae, _____ and bacteria growth.
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Choose one answer.
g8 g8
a. Flora
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b. Fauna
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c. Micro-organisms
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d. Biological
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e. Fungi
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,c - correct answer✔ ✔
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With all other factors being equal, a counter-
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flow cooling tower _____________ as a cross-
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flow cooling tower.
g8 g8
Choose one answer.
g8 g8
a. Is not as tall
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b. Has much less cooling capacity
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c. Requires less floor space
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d. Requires less fan power
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e. Has a lower pressure drop
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e - correct answer✔ ✔
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A simple gas turbine is one without reheaters or:
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Choose one answer.
g8 g8
a. Starting motors
g8 g8 g8
b. Shafts
g8 g8
c. Compressors
g8 g8
d. Combustors
g8 g8
e. Regenerators
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, a - correct answer✔ ✔
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Large internal combustion engines are cooled with:
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Choose one answer. g8 g8
a. Water jackets
g8 g8 g8
b. Evaporation
g8 g8
c. Air cooling
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d. Condensers
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e. Refrigeration
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a - correct answer✔ ✔
g8 g8 g8
Using a compressed air starting motor is a popular method
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of starting:
g8
Choose one answer. g8 g8
a. A large stationary diesel engine
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b. A small two-stroke engine
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c. A gasoline engine
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d. An aircraft engine
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e. A propane engine
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g8 g8 g8 g8 g8 g8
m
e - correct answer✔ ✔ Impulse turbines:
g8 g8 g8 g8
Choose one answer.
g8 g8
a. are only used with low pressure steam
g8 g8 g8 g8 g8 g8 g8 g8
b. require large thrust bearings
g8 g8 g8 g8 g8
c. were invented by Parsons
g8 g8 g8 g8 g8
d. have large pressure drops across the huckets
g8 g8 g8 g8 g8 g8 g8 g8
e. have blades with the same steam inlet and outlet angles
g8 g8 g8 g8 g8 g8 g8 g8 g8 g8
d - correct answer✔ ✔
g8 g8 g8
The stationary passages of a reaction turbine are called the:
g8 g8 g8 g8 g8 g8 g8 g8 g8
Choose one answer.
g8 g8
a. Shaft
g8 g8
b. Rotor
g8 g8
c. Shroud ring
g8 g8 g8
d. Fixed blades
g8 g8 g8
e. Diaphragms
g8
,c - correct answer✔ ✔
g8 g8 g8
The great majority of steam turbine governing systems utili
g8 g8 g8 g8 g8 g8 g8 g8
ze the
g8
a) hydraulic system principle
g8 g8 g8
b) pneumatic system principle
g8 g8 g8
c) mechanical centrifugal principle
g8 g8 g8
d) lever principle
g8 g8
e) bimetal expansion principle
g8 g8 g8
e - correct answer✔ ✔
g8 g8 g8
Biological fouling in recirculating cooling water towers is c
g8 g8 g8 g8 g8 g8 g8 g8
aused by algae, _____ and bacteria growth.
g8 g8 g8 g8 g8 g8
Choose one answer.
g8 g8
a. Flora
g8 g8
b. Fauna
g8 g8
c. Micro-organisms
g8 g8
d. Biological
g8 g8
e. Fungi
g8
,c - correct answer✔ ✔
g8 g8 g8
With all other factors being equal, a counter-
g8 g8 g8 g8 g8 g8 g8
flow cooling tower _____________ as a cross-
g8 g8 g8 g8 g8 g8
flow cooling tower.
g8 g8
Choose one answer.
g8 g8
a. Is not as tall
g8 g8 g8 g8 g8
b. Has much less cooling capacity
g8 g8 g8 g8 g8 g8
c. Requires less floor space
g8 g8 g8 g8 g8
d. Requires less fan power
g8 g8 g8 g8 g8
e. Has a lower pressure drop
g8 g8 g8 g8 g8
e - correct answer✔ ✔
g8 g8 g8
A simple gas turbine is one without reheaters or:
g8 g8 g8 g8 g8 g8 g8 g8
Choose one answer.
g8 g8
a. Starting motors
g8 g8 g8
b. Shafts
g8 g8
c. Compressors
g8 g8
d. Combustors
g8 g8
e. Regenerators
g8
, a - correct answer✔ ✔
g8 g8 g8
Large internal combustion engines are cooled with:
g8 g8 g8 g8 g8 g8
Choose one answer. g8 g8
a. Water jackets
g8 g8 g8
b. Evaporation
g8 g8
c. Air cooling
g8 g8 g8
d. Condensers
g8 g8
e. Refrigeration
g8
a - correct answer✔ ✔
g8 g8 g8
Using a compressed air starting motor is a popular method
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of starting:
g8
Choose one answer. g8 g8
a. A large stationary diesel engine
g8 g8 g8 g8 g8 g8
b. A small two-stroke engine
g8 g8 g8 g8 g8
c. A gasoline engine
g8 g8 g8 g8
d. An aircraft engine
g8 g8 g8 g8
e. A propane engine
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