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ITI
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Electrician Set-1
Batteries
79

Batteries MCQ - Electrician (Set-1) with Answers

79) Which material is applied to the terminal posts of a lead-acid battery to avoid corrosion ?

Ammonium sulphate

Silica jel

Petroleum jelly

Sulphur powder

Answer is:

Petroleum jelly

Batteries MCQ - Electrician (Set-1) with Answers

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Related Batteries MCQ - Electrician (Set-1) with Answers

80) What is the reason to keep open the vent plugs of lead-acid cell during charging ?

To escape the gas freely

To speed up the charging rate

To increase the specific gravity of the electrolyte

To reduce the sulphation defect

Answer is:

To escape the gas freely

81) How many lead-acid cells are to be grouped for 12 V battery and by which connection ?

6 cells in parallel

6 cells in series

12 cells in parallel

12 cells in series

Answer is:

6 cells in series

82) A 120 Ah capacity battery can deliver a current of 8 A for a period of :

20 hours

15 hours

12 hours

8 hours

Answer is:

15 hours

83) A carbon-zinc cell with an internal resistance of 0.5 ohm and an EMF of 1.5 volt is loaded with an external resistor of 19.5 ohm. Calculate the current 'I' flowing through the circuit in mA ?

82 mA

75 mA

72 mA

60 mA

Answer is:

75 mA

Batteries MCQ - Electrician (Set-1) with Answers

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