Engineering Questions with Answers - Multiple Choice Questions
Steam Turbines MCQ’s – Automatic Extraction Turbines
1 - Question
Extraction turbines has an opening in its casing.
a) True
b) False
View Answer
Answer: a
Explanation: Extraction steam turbines has an opening in its casing.
2 - Question
__________ steam is moved to condenser from the turbine in a single step.
a) Total
b) partial
c) depends on load
d) none of the mentioned
View Answer
Answer: b
Explanation: Some of the steam is extracted at intermediate pressure from casing and the remaining steam is sent to condenser.
3 - Question
The steam extraction is __________ extracted.
a) automatically
b) manually
c) automatically or manually
d) none of the mentioned
View Answer
Answer: c
Explanation: The steam extraction may or may not be automatically extracted.
4 - Question
Regulated extraction _________ the total electricity produced.
a) reduces
b) increases
c) has no effect on
d) none of the mentioned
View Answer
Answer: b
Explanation: Regulated extraction increases the additional electricity produced by steam extraction from casing.
5 - Question
Each extracting points on the casing has ______ temperature.
a) different
b) same
c) depends on the load
d) none of the mentioned
View Answer
Answer: a
Explanation: At each extracting point there will be a different pressure and hence temperature also changes.
6 - Question
Each extracting points on the casing has _______ pressure.
a) same
b) different
c) depends on the load
d) none of the mentioned
View Answer
Answer: b
Explanation: Each extracting point on the casing has a different temperature and pressure.
7 - Question
Automatic extraction turbines generate electrical energy.
a) True
b) False
View Answer
Answer: a
Explanation: Automatic extraction turbines generate both electrical and thermal energy.
8 - Question
Automatic extraction turbine generate __________
a) mechanical & thermal energy
b) mechanical energy
c) thermal energy
d) none of the mentioned
View Answer
Answer: c
Explanation: Automatic extraction turbine generate both electrical and thermal energy.
9 - Question
__________ extraction turbines are combined heat and power supply turbines.
a) Automatic
b) Manual
c) Manual or Automatic
d) None of the mentioned
View Answer
Answer: a
Explanation: Combined heat and power supply turbines are classified as automatic extraction turbines,back pressure turbines and back pressure extraction turbines.
10 - Question
In automatic extraction turbines pressure of extracted steam is maintained by __________
a) Extraction points on case
b) Control system
c) Extraction points on case and Control system
d) None of the mentioned
View Answer
Answer: b
Explanation: In automatic extraction turbines pressure of extracted steam is maintained by control system.