MCQOPTIONS

Explore topic-wise MCQs in Ocean Energy.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Ocean Energy knowledge and support exam preparation. Choose a topic below to get started.

1.	The wall thickness of pipes used to transport the vapour increases as the vapour pressure of working fluid increases.
A.	True
B.	False
Answer» B. False

2.	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
Answer» C. does not change

3.	Which of the following is a good choice for working fluid?
A.	CFCs
B.	Steam
C.	Surface seawater
D.	Deep seawater
Answer» B. Steam

4.	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
Answer» E.

5.	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
Answer» D. Deep seawater low-pressure container turbine/generator

6.	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
Answer» C. Used to generate electricity

7.	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
Answer» B. Because of the working fluid

8.	Which of the following produces desalinized fresh water?
A.	Closed-cycle OTEC
B.	Fracking
C.	Ammonia
D.	Open-cycle OTEC
Answer» E.

9.	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
Answer» D. To solidify the warm surface seawater

10.	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
Answer» C. Deep seawater heat exchanger working fluid turbine

11.	The open-cycle OTEC uses working fluid.
A.	False
B.	True
Answer» B. True

12.	Which of the following organisations developed the mini OTEC ?
A.	CERN
B.	NASA
C.	ISRO
D.	Natural Energy Laboratory
Answer» E.

13.	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
Answer» D. Fresh cold water

14.	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
Answer» C. Fluid compressor

15.	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
Answer» B. High boiling point fluids at atmospheric pressure