We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
HANDBOOK OF PROJECTION FOR
In what manner would you ascertain the correct voltage between the contact studs of the "C"
battery? 1045
What does a high plate current indicate? 1046
How often would you inspect the "C" battery? 1046
How would you remedy a poor contact of the "C" battery with the grid circuit ? 1046
Adding Water
Where is the correct upper water level of a storage
battery? 1094
What sort of water is always safe for batteries?... 1095 Is any water except distilled safe for batteries?.... 1094 What should you do if you are uncertain as to the
safety of the water from your local waterworks
or from a well ? 1094
Why should the electrolyte never be permitted to
drop below the tops of the plates ? 1095
What will be the result if the electrolyte is permitted
to drop below the top of the plates ? 1095
Can a dead battery plate be restored to activity?. . . . 1095 When should water be added to a battery, and why? 1096 Is it permissible to use a battery immediately after
charging ? 1096
What will happen if you use a battery within half
an hour after charging has. been completed? 1096
Describe the correct manner of taking a hydrometer
reading 1096
Is harm done if batteries are allowed to discharge
too much before placing them on charge? 1097
Is it advisable for the projectionist to mix his own
electrolyte? 1098
Describe the composition of electrolyte 1098
Battery Terminals
Tell just what attention battery terminals should have 1098
The Exciting Lamp
What purpose does the exciting lamp serve ? 1057
What is essential to good results with relation to the exciting lamp ? 1057
Is it absolutely essential to good results that the exciting lamp itself be in good condition? 1057
Is it essential to good results that the slit optical system be in correct adjustment, clean and the light from the slit correctly focused on the sound
track? 1057
xxii