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MCQs

Total Questions : 236 | Page 23 of 24 pages
Question 221. Persons preparing electrolyte should wear
  1.    all of these
  2.    rubber boots and gloves
  3.    goggles or other face shield
  4.    rubber
 Discuss Question
Answer: Option A. -> all of these
Question 222. The lead-acid cell should never be discharged beyond
  1.    2.1 V
  2.    1.9 V
  3.    2 V
  4.    1.8 V
 Discuss Question
Answer: Option D. -> 1.8 V
Question 223. 48 ampere-hour capacity would deliver a current of
  1.    48 amperes for 1 hour
  2.    24 amperes for 2 hours
  3.    6 amperes for 8 hours
  4.    8 amperes for 6 hours
 Discuss Question
Answer: Option C. -> 6 amperes for 8 hours
Question 224. Capacity of dry cells is
  1.    unaffected by the type of discharge
  2.    more when it is supplying current for intermittent periods
  3.    None of these
  4.    more when it is supplying current for continuous periods
 Discuss Question
Answer: Option B. -> more when it is supplying current for intermittent periods
Question 225. In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3
  1.    6 parts of acid to 4 parts of water
  2.    4 parts of acid to 8 parts of water
  3.    4 parts of acid to 6 parts of water
  4.    4 parts of acid to 4 parts of water
 Discuss Question
Answer: Option C. -> 4 parts of acid to 6 parts of water
Question 226. Extent of corrosion in the underground metal work depends upon
  1.    type of soil chemicals
  2.    type of metals
  3.    amount of moisture
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 227. The following indicate that battery on charge has attained full charge
  1.    colour of electrode
  2.    all of these
  3.    gassing
  4.    specific gravity
 Discuss Question
Answer: Option B. -> all of these
Question 228. The average charging voltage for alkali cell is about
  1.    1.7 V
  2.    1.2 V
  3.    1 V
  4.    2.1 V
 Discuss Question
Answer: Option A. -> 1.7 V
Question 229. Lead-acid cell has a life of nearly charges and discharges
  1.    500
  2.    1000
  3.    700
  4.    1250
 Discuss Question
Answer: Option D. -> 1250
Question 230. Which among the following constitutes the major load for an automobile battery ?
  1.    Parking lights
  2.    Spark plugs
  3.    Self starter
  4.    Brake light
 Discuss Question
Answer: Option C. -> Self starter

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