Electrolysis and storage of batteries Archives - Page 4 of 10 - MCQ and Quiz for Exams

31. In a lead-acid battery the energy is stored in the form of

charged ions

chemical energy

electrostatic energy

electromagnetic energy

Detailed SolutionIn a lead-acid battery the energy is stored in the form of

32. The current flow through electrolyte is due to the movement of

ions

holes

electrons

none of the above

Detailed SolutionThe current flow through electrolyte is due to the movement of

33. _______ of electrolyte indicates the state of charge of the battery

colour

mass

viscosity

specific gravity

Detailed Solution_______ of electrolyte indicates the state of charge of the battery

34. Satellite power requirement is provided through

solar cells

dry cells

nickel-cadmium cells

lead-acid batteries

Detailed SolutionSatellite power requirement is provided through

35. A constant-voltage generator has

minimum efficiency

minimum current capacity

low internal resistance

high internal resistance

Detailed SolutionA constant-voltage generator has

36. Hydrogen evolved during charging produces explosive mixture when it is more than

2%

4%

6%

8%

Detailed SolutionHydrogen evolved during charging produces explosive mixture when it is more than

37. The lead-acid cell should never be discharged beyond

1.8 V

1.9 V

2 V

2.1 V

Detailed SolutionThe lead-acid cell should never be discharged beyond

38. When the load resistance equals the generator resistance which of the following will be maximum ?

Current

Efficiency of the circuit

Power in the load resistance

Voltage across the load resistance

Detailed SolutionWhen the load resistance equals the generator resistance which of the following will be maximum ?

39. The body of Edison cell is made of

bakelite

rubber

nickel plated steel

aluminium

Detailed SolutionThe body of Edison cell is made of

40. Weston standard cell at 20Â°C has voltage of ____ volts.

0.8

0.9

1.0187

1.5

Detailed SolutionWeston standard cell at 20Â°C has voltage of ____ volts.

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