76. normally, you should only add water to a battery:
a. before charging
b. after charging
c. it doesn’t matter when you add water
77. primary voltage configurations in north america are 24, 36 & 48 volts.
true______ false______
78. an industrial battery with 18 cells has approximately how many volts?
a. 12
b. 24
c. 36
d. 48
79. you should remove all metallic jewelry before working on batteries because:
a. jewelry is magnetized to the battery
b. if it touches the battery, you could get burned
c. you may lose it
80. after charging a battery, always turn off the charger before disconnecting the battery from the charger.
true______ false______

Question

Accepted Answer

### Question 76
# Brief Explanations:
To determine when to add water to a battery, we rely on battery maintenance knowledge. Batteries, especially lead - acid ones, should have water added after charging. When a battery is charged, the electrolyte (which contains water) expands. Adding water before charging can lead to overflow during the charging process as the electrolyte expands. So the correct time to add water is after charging.
# Answer:
b. After charging

### Question 77
# Brief Explanations:
In North America, the primary voltage configurations for industrial batteries (like forklift batteries) are typically 12, 24, 36, and 48 volts? Wait, no, actually, the standard primary voltage configurations for many industrial battery systems in North America for things like forklifts and similar equipment: a single cell in a lead - acid battery produces about 2 volts. So a 12 - volt system has 6 cells, 24 - volt has 12 cells, 36 - volt has 18 cells, and 48 - volt has 24 cells. Wait, the question says "Primary voltage configurations in North America are 24, 36 & 48 volts". But actually, 12 volts is also a very common primary voltage configuration (for example, car batteries are 12 - volt, which is a primary voltage configuration). So the statement that only 24, 36, and 48 are primary voltage configurations is false.
# Answer:
False

### Question 78
# Explanation:
## Step 1: Recall the voltage per cell
In a lead - acid battery, each cell typically produces approximately 2 volts.
## Step 2: Calculate total voltage
We have an industrial battery with 18 cells. To find the total voltage, we use the formula: Total Voltage = Voltage per cell×Number of cells. So, Total Voltage=$2	imes18 = 36$ volts.
# Answer:
c. 36

### Question 79
# Brief Explanations:
When working on batteries, metallic jewelry is a hazard. Batteries can have a significant amount of electrical current, and if metallic jewelry (like rings, bracelets) comes into contact with the battery terminals or other conductive parts, it can create a short circuit. This short circuit can cause a large amount of current to flow through the jewelry, which can heat it up rapidly, and this heat can burn the person wearing the jewelry. Option a is incorrect because jewelry is not magnetized to the battery in a way that is a safety hazard here. Option c is incorrect as losing the jewelry is not the safety - related reason for removing it.
# Answer:
b. If it touches the battery, you could get burned

### Question 80
# Brief Explanations:
When disconnecting a battery from a charger after charging, the correct procedure is to turn off the charger first. This is because if you disconnect the battery while the charger is still on, it can cause a spark. This spark can be dangerous, especially in the presence of flammable gases that may be emitted by the battery (like hydrogen gas in lead - acid batteries). So the statement "After charging a battery, always turn off the charger before disconnecting the battery from the charger" is true.
# Answer:
True

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Question 76

Step 1: Recall the voltage per cell

Step 2: Calculate total voltage

Answer:

Question 77