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MCQs

Total Questions : 236 | Page 4 of 24 pages
Question 31. Extent of corrosion in the underground metal work depends upon
  1.    amount of moisture
  2.    type of metals
  3.    type of soil chemicals
  4.    all above factors
 Discuss Question
Answer: Option D. -> all above factors
Question 32. The average charging voltage for alkali cell is about
  1.    1 V
  2.    1.2 V
  3.    1.7 V
  4.    2.1 V
 Discuss Question
Answer: Option C. -> 1.7 V
Question 33. Lead-acid cell has a life of nearly charges and discharges
  1.    500
  2.    700
  3.    1000
  4.    1250
 Discuss Question
Answer: Option D. -> 1250
Question 34. Which among the following constitutes the major load for an automobile battery ?
  1.    Brake light
  2.    Self starter
  3.    Parking lights
  4.    Spark plugs
 Discuss Question
Answer: Option B. -> Self starter
Question 35. The following indicate that battery on charge has attained full charge
  1.    colour of electrode
  2.    gassing
  3.    specific gravity
  4.    all above
 Discuss Question
Answer: Option D. -> all above
Question 36. The lead-acid cell should never be discharged beyond
  1.    1.8 V
  2.    1.9 V
  3.    2 V
  4.    2.1 V
 Discuss Question
Answer: Option A. -> 1.8 V
Question 37. 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 4 parts of water
  3.    4 parts of acid to 6 parts of water
  4.    4 parts of acid to 8 parts of water
 Discuss Question
Answer: Option C. -> 4 parts of acid to 6 parts of water
Question 38. Persons preparing electrolyte should wear
  1.    goggles or other face shield
  2.    rubber
  3.    rubber boots and gloves
  4.    all above safety devices
 Discuss Question
Answer: Option D. -> all above safety devices
Question 39. Capacity of dry cells is
  1.    more when it is supplying current for intermittent periods
  2.    more when it is supplying current for continuous periods
  3.    unaffected by the type of discharge
  4.    none of the above
 Discuss Question
Answer: Option A. -> more when it is supplying current for intermittent periods
Question 40. 48 ampere-hour capacity would deliver a current of
  1.    48 amperes for 1 hour
  2.    24 amperes for 2 hours
  3.    8 amperes for 6 hours
  4.    6 amperes for 8 hours
 Discuss Question
Answer: Option D. -> 6 amperes for 8 hours

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