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MCQs

Total Questions : 192 | Page 4 of 20 pages
Question 31. _________ is an example of storing wind energy chemically.
  1.    Flywheels
  2.    Pumped storage
  3.    Batteries
  4.    Electro-hydrogen generation
 Discuss Question
Answer: Option D. -> Electro-hydrogen generation
Answer: (d).Electro-hydrogen generation
Question 32. Energy storage devices can manage power fluctuations.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 33. Wind energy can be switched on ‘on demand’.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 34. What is energy storage capacity?
  1.    Power stored
  2.    Amount of energy that can be drawn from a storage device
  3.    Amount of energy stored in a storage device
  4.    Amount of energy a storage device can store for a period of time
 Discuss Question
Answer: Option D. -> Amount of energy a storage device can store for a period of time
Answer: (d).Amount of energy a storage device can store for a period of time
Question 35. Which of following is are parameters used to describe an energy storage device?
  1.    Power, energy, time, frequency, Young’s modulus
  2.    Power capacity, voltage, heat, angular speed, frequency
  3.    Power capacity, energy storage capacity, efficiency, response time, round-trip efficiency
  4.    Stress, strain, Young’s Modulus, elasticity, rigidity
 Discuss Question
Answer: Option C. -> Power capacity, energy storage capacity, efficiency, response time, round-trip efficiency
Answer: (c).Power capacity, energy storage capacity, efficiency, response time, round-trip efficiency
Question 36. Which of the following are used for large scale battery energy storage?
  1.    Li-ion batteries
  2.    Capacitors
  3.    Lead acid
  4.    Reservoirs
 Discuss Question
Answer: Option C. -> Lead acid
Answer: (c).Lead acid
Question 37. Which of the following best indicates the flow diagram of storage mode in compressed air energy storage?
  1.    Power from grid → motor → compressor → storage
  2.    Power from grid → motor → storage → compressor
  3.    Power from grid → compressor → motor → storage
  4.    Motor → power from grid → compressor → storage
 Discuss Question
Answer: Option A. -> Power from grid → motor → compressor → storage
Answer: (a).Power from grid → motor → compressor → storage
Question 38. Which of the following best indicates the flow diagram of power generation mode in compressed air energy storage?
  1.    Storage → LPT → HPT → generator
  2.    Storage → HPT → LPT → generator
  3.    Storage → LPT → generator → HPT
  4.    HPT → Storage →LPT → generator
 Discuss Question
Answer: Option B. -> Storage → HPT → LPT → generator
Answer: (b).Storage → HPT → LPT → generator
Question 39. The central shaft in a flywheel energy storage device rotates on two magnetic bearings.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 40. How does a flow battery energy storage work?
  1.    Electrolyte tanks → pumps → electrodes → current
  2.    Electrolyte tanks → pumps → current → electrodes
  3.    Electrolyte tanks → current → electrodes → pumps
  4.    Electrolyte tanks → electrodes → current → pumps
 Discuss Question
Answer: Option A. -> Electrolyte tanks → pumps → electrodes → current
Answer: (a).Electrolyte tanks → pumps → electrodes → current

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