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HANDBOOK OF PROJECTION FOR
How may you ascertain the correct voltage between
the contact studs of the "C" battery? 1046
How often should the "C" battery be inspected?... 1046
What does a high plate current indicate ? 1046
How would you remedy poor contact by the "C"
battery with the grid circuit ? 1046
How would you clean the contact point at the base
of an amplifying or rectifying tube? 1046
Is it possible to do harm by holding a voltmeter in
contact with "C" battery contact points too long? 1046
Rectifier Tubes
Does the instructions for care of amplifying tubes apply with equal force to rectifier tubes? 1047
When two rectifier tubes are in use, what is the reason for the use of two of them? 1037, 1047
Should the rectifier tube filament current have an exact, fixed value ? 1047
Where amplifying tubes are held in spring suspension, what is necessary? 1047
Should the amplification dial switch of Western Electric installations ever be moved ? 1047
Where two or more tubes are operated in series, what would you do first should the series go dead ? 1047
Storage Batteries and Their Care
What is at storage battery ? 1083
What harm will loose battery connections, dirt, et
cetera, on batteries, et cetera, cause? 1044
Is it permissible to use batteries for sound amplification immediately after charging? 1045
What is necessary before power can be taken from
a storage battery ? 1083
Does a storage battery itself generate power? 1083
Can alternating current be used for charging storage
batteries? 1083, 1087
By what means may A. C. power be used for charging storage batteries ? 1083
Describe the elements of a storage battery 1084
Describe the experiments which led to the discovery
of the storage battery , 1084
Describe what takes place in battery plates during
both charging and discharging 1084
By what action is the current produced which comes
from a storage battery ? 1086
What will happen if a battery is permitted to become
entirely discharged before recharging? 1087, 1096
What will happen if a battery be charged too fast?.. 1087 How is the correct rate for charging ascertained?.. 1087
What is the "electrolyte"? 1087,1098
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