___ are rigid frames designed to support cells or trays

Which of the following is a storage battery:

In Lead acid batteries, ____gas is liberated at positive plate and ____ gas is liberated at negative plate respectively:

Overcurrent protection shall not be required to be provided for conductors from a battery rated less than __ volts if battery is provided for starting of prime mover:

Sealed Cell or Battery shall not be provided by pressure relief venting

Working clearance shall be measured from the ___ of the battery rack:

Each vented cell must be equipped with flame arrester:

A minimum separation between two live parts of opposite polarities of plates shall be ___ for battery voltage not exceeding 600V

Sealed cells operating not over 250V constructed of non conductive heat restrained material shall not requiring additional insulation support:

A disconnecting means shall be provided for all ungrounded conductors derived from stationary battery system over ____ volts: