Battery Charging and Management System

Cells are connected in parallel to _______

• Increase the efficiency

• Increase the current capacity

• Increase the voltage output

• Increase the internal resistance

Trickle charger of a storage battery helps to ____

• Maintain proper electrolyte level

• Increase its reverse capacitor

• Prevent sulphation

• Keep it fresh and fully charged

The indication of the state of charge of a battery is best given by ___

• specific gravity of electrolyte

• temperature of electrolyte

• colour of electrolyte

• level of electrolyte

For a group of cells when internal resistance of the group is equal to the external

resistance due to load, the battery will give ___

• maximum voltage

• maximum current

• maximum energy

• maximum ampere-hours

Even when not in use, the self-discharge of a battery occurs at the rate of _____

• 0.5 to 1% of rated capacity per hour

• 0.5 to 1% of rated capacity per day

• 0.5 to 1% of rated capacity per week

• 0.5 to 1% of rated capacity per month

Charge time for super capacitor is generally ____

• More than that of Lithium-ion battery

• Less than that of Lithium-ion battery

• Equal to that of Lithium-ion battery

• Can’t say

_______ tells you how far you can drive before recharge.

• State of Current (SOC)

• State of Hybrid (SOH)

• State of health (SOH)

• State of Charge (SOC)

_________ tells you when it’s time to replace your batteries.

• State of Current (SOC)

• State of Power (SOP)

• State of health (SOH)

• State of Charge (SOC)

The capacity of a battery or cell is defined as the amount of ____ that it can deliver in a single discharge.

• Energy

• Power

• Voltage

• Current

It is difficult to use ultracapacitors alone as an energy storage for EVs and HEVs

because of their

• high specific energy density and the dependence of voltage on the SOC

• low specific energy density and the dependence of voltage on the SOC

• low specific energy density and the independence of voltage on the SOC

• high specific energy density and the independence of voltage on the SOC