NPTEL Smart Grid: Basics to Advanced Technologies Week 3 Assignment Answers 2024
1. The first commercial lithium-ion battery was released by sony in
- 1978
- 1982
- 1991
- 2007
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2. According to the storage deployment statics released by the US Department of Energy (DOE) in 2017. Which of the following is correct in the context of India?
I.Pumped hydro storage has the highest share of total storage
II.Thermal storage > Electro-chemical and electro-mechanical combined storage
- Only I
- Only II
- I and II
- None
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3. Which of the following depicts the need for energy storage in power grid system operation?
I. Black-start services
II. Reduce renewable energy curtailment
III.Capacity investment deferral
IV. Frequency regulation and flexible ramping
- I and IV
- I, II, and IV
- II, and IV
- I, II, III, and IV
Answer :-
4. Which one of the following matches is false?
I. Pumped hydro:– Hybrid energy storage system
II. Lead-acid:- Electro-chemical energy storage system
III. Biofuel:- Chemical energy storage system
IV. Battery and Flywheel:- Hybrid energy storage system
- II
- IV
- I
- III
Answer :-
5. Which storage technology has a very good usable capacity?
- Flywheel
- Lithium-ion
- Super Capacitor
- Lead Acid
Answer :-
6. What is the storage capacity of largest solar powered battery by Florida power and light company?
- 250 MW
- 500 MW
- 751 MW
- 409 MW
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7. Energy storage tender activity increased by ___________ % in 2021?
- 41%
- 14%
- 45%
- 54%
Answer :-
8. Which is not an active cell balancing method?
- Cell to cell
- Over charge
- Cell bypass
- Pack to pack
Answer :-
9. Suppose the objective function of an optimization problem is convex. Then, which of the following is true regarding the overall optimization problem?
I. Non-linear constraints always result in a non-convex problem
II. Linear constraints always result in a convex optimization problem
III.Linear constraints may result in a non-convex optimization problem
IV. Non-linear constraints may result in a non-convex optimization problem
- I and II
- II and IV
- III and IV
- I and III
Answer :-
10. Why Battery Management System required?
- It increases the battery pack efficiency.
- Optimal Usage of the energy inside the battery.
- Reduce the risk of prematurity of the battery.
- All of the above
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