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MCQs

Total Questions : 192 | Page 18 of 20 pages
Question 171. Pumped hydroelectric is an example of _________
  1.    Gravitational potential storage
  2.    Latent heat storage
  3.    Thermal storage
  4.    Hydroelectric power generation
 Discuss Question
Answer: Option A. -> Gravitational potential storage
Answer: (a).Gravitational potential storage
Question 172. What type of materials are used for latent heat storage?
  1.    Materials with high stress
  2.    Phase-change materials
  3.    Materials with high stress/strain ratio
  4.    Elastic materials
 Discuss Question
Answer: Option B. -> Phase-change materials
Answer: (b).Phase-change materials
Question 173. When does a power conversion system act as an inverter for an energy storing device?
  1.    When the device is being charged
  2.    When the device is being discharged
  3.    When the device starts working
  4.    When the power conversion system is being discharged
 Discuss Question
Answer: Option B. -> When the device is being discharged
Answer: (b).When the device is being discharged
Question 174. When does a power conversion system act as a rectifier for an energy storing device?
  1.    When the device is being charged
  2.    When the device is being discharged
  3.    When the device stops working
  4.    When the power conversion system is being charged
 Discuss Question
Answer: Option A. -> When the device is being charged
Answer: (a).When the device is being charged
Question 175. Flywheels are an example of ________ energy storage.
  1.    potential
  2.    electric potential
  3.    thermal kinetic
  4.    kinetic
 Discuss Question
Answer: Option D. -> kinetic
Answer: (d).kinetic
Question 176. Flywheels are used in uninterrupted power supply (UPS).
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 177. Capacitors do not suffer from ________
  1.    dielectric breakdown
  2.    material dependence
  3.    excess electric potential
  4.    memory effect
 Discuss Question
Answer: Option D. -> memory effect
Answer: (d).memory effect
Question 178. What is considered as a strong breeze on a Beaufort Wind Scale?
  1.    0
  2.    6
  3.    1
  4.    4
 Discuss Question
Answer: Option B. -> 6
Answer: (b).6
Question 179. Which of the following are types of winds?
  1.    Planetary winds, periodic winds, local winds
  2.    Trade winds, westerly winds, plate tectonics
  3.    Apples, monsoon
  4.    Clouds, rains, storms
 Discuss Question
Answer: Option A. -> Planetary winds, periodic winds, local winds
Answer: (a).Planetary winds, periodic winds, local winds
Question 180. Which of the following involves studying the physics of wind flow?
  1.    Microbial fuel cells
  2.    Fluid dynamics
  3.    Combustion
  4.    Polymer science
 Discuss Question
Answer: Option B. -> Fluid dynamics
Answer: (b).Fluid dynamics

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