MCQGeeks
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Renewable Energy
Ocean Energy Exam
Quiz 1
Solution
Q.1.
What type of working fluids do closed-cycle ocean thermal energy conversion (OTEC) systems use?
a) Low boiling point fluids at atmospheric pressure
b) High boiling point fluids at atmospheric pressure
c) Low boiling point fluids at 100 bar
d) High boiling point fluids at 100 bar
Q.2.
What is the warm surface seawater pumped through in a closed-cycle ocean thermal energy conversion (OTEC) system?
a) Heat compressor
b) Heat exchanger
c) Fluid compressor
d) Turbine
Q.3.
How is the vapourised working fluid condensed in a closed-cycle ocean thermal energy conversion system?
a) Warm surface seawater
b) Fresh warm water
c) Cold water from deep ocean
d) Fresh cold water
Q.4.
Which of the following organisations developed the “mini OTEC”?
a) CERN
b) NASA
c) ISRO
d) Natural Energy Laboratory
Q.5.
The open-cycle OTEC uses working fluid.
a) False
b) True
Q.6.
Which of the following best describes the open-cycle OTEC?
a) Warm surface seawater → heat exchanger → working fluid → turbine
b) Warm surface seawater → low-pressure container → turbine/generator
c) Deep seawater → heat exchanger → working fluid → turbine
d) Deep seawater → low-pressure container → turbine/generator
Q.7.
Why does an open-cycle OTEC use low-pressure container?
a) To solidify the warm surface seawater
b) To evaporate the deep seawater
c) To boil and evaporate the warm surface seawater
d) To solidify the warm surface seawater
Q.8.
Which of the following produces desalinized fresh water?
a) Closed-cycle OTEC
b) Fracking
c) Ammonia
d) Open-cycle OTEC
Q.9.
Why does open-cycle OTEC produce desalinized fresh water?
a) Because the vapourised surface seawater leaves all the salts and contaminants in the low-pressure container
b) Because of the working fluid
c) Because the warm surface seawater is mixed with deep ocean water
d) Because of thermohaline circulation
Q.10.
Where is the desalinized fresh water used?
a) Sent back into ocean
b) Used for irrigation and aquaculture
c) Used to generate electricity
d) Used to generate tides
Q.11.
Which of the following best describes hybrid ocean thermal energy conversion?
a) Warm surface seawater → low-pressure container → turbine/generator
b) Deep seawater → vacuum chamber → flash-evaporated → steam vapourises ammonia → turbine
c) Warm surface seawater → vacuum chamber → flash-evaporated → steam vapourises ammonia → turbine
d) Deep seawater → low-pressure container → turbine/generator
Q.12.
How does hybrid OTEC provide desalinized water?
a) By evaporating the warm surface seawater
b) By solidifying the warm surface seawater
c) By condensing the steam generated from deep seawater
d) By condensing the steam generated from warm surface seawater
Q.13.
Which of the following is a good choice for working fluid?
a) CFCs
b) Steam
c) Surface seawater
d) Deep seawater
Q.14.
As the vapour pressure of working fluid increases the size of turbine ________
a) increases
b) decreases
c) does not change
d) first increases then decreases
Q.15.
The wall thickness of pipes used to transport the vapour increases as the vapour pressure of working fluid increases.
a) True
b) False
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page