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WorksheetsModule 3.2 Revision
Total questions: 21
Worksheet time: 5hrs 15mins
The most common type of wet cell uses lead plates and
Sulfuric acid electrolyte
Lead acid
Water
Lead acid and water
The most common type of wet cell uses lead plates and Sulfuric acid electrolyte is called
a. Wet cell
b. Dry cell
c. Lead-acid cell
d. Sulfuric acid electrolyte cell
The lead –acid cell constructed by
a. Positive plate, negative plate and separator
b. Positive plate, negative plate and acid
c. Positive plate, negative plate and water
d. Lead acid, water and separator
When the cells are fully charged ,the negative plate group is?
a. Lead peroxide
b. Pure spongy lead
c. Has maximum acid content
d. Both a & b
When the chemical action will stop?
a. When acid contents is at minimum
b. When water contents is at maximum
c. When both plates are chemically alike
d. All of the above
When the cell can’t produce any more electricity?
a. When the cell is charged
b. When the cell is discharge
c. When both plates are coved with lead sulfate
d. Both b and c
To obtain higher voltage cells must be connected in
a. Parallel
b. Series-parallel
c. Series
d. Parallel-series
What is the voltage output of a single lead-acid cell?
a. 1v
b. 2v
c. 3v
d. 4v
A car needed 12V to start the engine, run the lights, car radio and etc., How many cells made up a battery?
a. 4 cells
b. 5 cells
c. 6 cells
d. 7 cells
What is the most important use of batteries in big companies?
a. Emergency light
b. In the cars
c. In UPS System
d. Backup power
Where can batteries be used?
a. In the factory
b. In Saudi Aramco
c. In the car
d. Any where that’s needs a portable DC supply
What does the voltage of a storage battery depend on?
a. Cell type
b. Connection type
c. Number of cells
d. All of the above
What does the cell size and weight effect?
a. Batteries voltage
b. Batteries current
c. Length of time battery can supply
d. Both b and c
What is the correct unit to measure the of capacity a battery?
a. Volt- ampere
b. Watt
c. Ampere
d. Ampere-hours
What is the correct formula to calculate the capacity of battery?
d. Capacity = volts x time
c. Capacity = current x watt
b. Capacity = current x time
a. Capacity = current x volts
What capacity of a battery can supply 20 ampere for 10 hours?
a. 100 (AHr)
b. 200 (AHr)
c. 300 (AHr)
d. 400 (AHr)
The physical size of a cell of 80 Ahr capacity is:
a. Larger than cell of 800 Ahr
b. Smaller than cell of 800 Ahr
c. Twice large than cell of 800 Ahr
d. Same size
What you must know to be able to maintain batteries?
a. Identifying battery type
b. Know batteries capacity
c. Identifying battery voltage
d. All of the above
How many cells should be connected together to have an output of DC voltage equal to 20 V, if each cell is producing 2V ?
a. 10 cells connected in parallel
b. 10 cells connected in series
c. 20 cells connected in parallel
d. 20 cells connected in series
1. What is the purpose of the rectifier in UPS System?
a. To convert the AC current to DC current
b. To convert the DC current to AC current
c. To charge the batteries
d. Both a & c
Refer to figure 1 below , Identify the Number 1 & 2?
a. 1 = Rectifier & 2 = Inverter
b. 1 = Inverter & 2 = Rectifier
c. 1 = Batteries & 2 = Rectifier
d. 1 = Batteries & 2 = Inverter
