NETA Battery and UPS Systems Testing

Question 1

Which battery type allows specific gravity measurement of the electrolyte as a primary acceptance test method?

Accepted Answer

Flooded vented lead-acid

Answer

Valve-regulated lead-acid (VRLA/AGM)

Answer

Sealed nickel-cadmium

Answer

Lithium-ion phosphate

Question 2

What instrument is used to measure the specific gravity of a battery cell's electrolyte during NETA acceptance testing?

Accepted Answer

Hydrometer

Answer

Megohmmeter

Answer

Clamp-on ammeter

Answer

Digital multimeter

Question 3

According to NETA acceptance testing standards, individual float voltage measurements for battery strings should be recorded at which level?

Accepted Answer

Each individual cell

Answer

The entire battery string only

Answer

Each bank (group of 6 cells)

Answer

The charger output terminals only

Question 4

What is the primary operational advantage of internal resistance/conductance testing compared to a full capacity discharge test?

Accepted Answer

It can be performed online without interrupting the connected load

Answer

It provides a more accurate measure of remaining battery capacity

Answer

It eliminates the need for float voltage measurement

Answer

It provides specific gravity readings for VRLA batteries

Question 5

What is the standard end-of-discharge voltage per cell for a 2V nominal lead-acid battery cell during a rated capacity test?

Accepted Answer

1.75 V per cell

Answer

2.00 V per cell

Answer

1.90 V per cell

Answer

1.50 V per cell

Question 6

What minimum percentage of rated capacity must a battery string demonstrate during a NETA acceptance capacity test to be considered acceptable?

Accepted Answer

80%

Answer

70%

Answer

90%

Answer

95%

Question 7

Which battery type presents the greatest risk of hydrogen gas accumulation during the charging process, requiring adequate ventilation?

Accepted Answer

Flooded vented lead-acid

Answer

Valve-regulated lead-acid (VRLA/AGM)

Answer

Sealed nickel-cadmium

Answer

Lithium-iron phosphate