Electrolysis and storage of batteries

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 20°C has voltage of ____ volts.

0.8
0.9
1.0187
1.5

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

Page 1Page 2Page 3Page 4Page 5
Test 1Test 2