Test 7

Question 1

Overcharge is the ratio of applied charge to the resulting increase in battery charge.

Answer 1

True

Question 2

Charge controllers protect batteries from over discharge by controlling discharging current.

Answer 2

True

Question 3

Series charge controllers control charging current by short-circuiting the array.

Answer 3

False

Question 4

A diversionary charge controller is a charge controller that regulates charging current to a battery system by diverting excess power to an auxiliary load.

Answer 4

True

Question 5

The voltage regulation setpoint is the voltage at which a charge controller disconnects loads from the battery system.

Answer 5

False

Question 6

Multistage charge controllers with an absorption charge cycle will also include a float charge setpoint, which is a lightly lower voltage than the voltage regulation setpoint.

Answer 6

True

Question 7

In general, lower setpoints are required for the simpler interrupting-type charge controllers than for the more advanced controller algorithms.

Answer 7

False

Question 8

A PV system can be configured to charge multiple separate battery banks with a single array.

Answer 8

True

Question 9

A PWM charge controller pulses the full charge current and varies the width of the pulses to regulate the amount of charge current.

Answer 9

True

Question 10

Applications with widely varying insolation or extreme temperature variations are generally not suitable for self-regulating systems.

Answer 10

True

Question 11

____ is the ratio of the increase in battery charge to the amount of charge supplied to the battery.

Answer 11

Charge acceptance

Question 12

____ is a charge cycle with an array current that fails to fully charge the battery system.

Answer 12

Deficit charge

Question 13

A(n) ____ charge controller is a charge controller that switches the charging current ON and OFF for charge regulation.

Answer 13

interrupting-type

Question 14

A ____ charge controller is a charge controller that limits charging current to a battery system by gradually increasing the resistance of a series element.

Answer 14

series-linear

Question 15

A(n) ____ charge controller is a charge controller that counts the total amount of charge into and out of a battery and regulates charging current based on a preset amount of overcharge.

Answer 15

ampere-hour integrating

Question 16

A charge controller ____ is a battery condition, commonly the voltage, at which a charge controller performs control or switching functions.

Answer 16

setpoint

Question 17

____ affects battery charging characteristics, so some charge controllers automatically adjust setpoints to compensate for this factor.

Answer 17

temperature

Question 18

____ is the condition of battery state of charge declining to the point where it can no longer supply discharge current without damaging the battery.

Answer 18

overdischarge

Question 19

A charge control ____ is a programmed series of functions that a charge controller used to control current and/or voltage in order to maintain battery state of charge.

Answer 19

algorithm

Question 20

A ___ load is an auxiliary load that is not critical system load, but is always available to utilize the full array power to protect a battery from overcharge.

Answer 20

diversion

Question 21

A(n) ____ is a device that regulates battery charge by controlling the charging voltage and/or current from a DC power source, such as a PV array.

Answer 21

charge controller

Question 22

The ____ setpoint is the maximum voltage that a charge controller allows a battery to reach under normal operating conditions.

Answer 22

voltage regulation

Question 23

A(n) ___ charge controller is a charge controller that limits charging current to a battery system by gradually lowering the resistance of a shunt element.

Answer 23

shunt-linear

Question 24

A(n) ____-system charge controller is a charge controller with advanced features for managing multiple energy sources.

Answer 24

hybrid

Question 25

The ____ is the voltage difference between the voltage regulation setpoint and the array reconnect voltage setpoint.

Answer 25

voltage regulation hysteresis

Question 26

____ is a controlled overcharge for a few hours.

Answer 26

Equalization

Question 27

As charging current increases on the conductors between the charge controller and battery terminals, the voltage drop ____.

Answer 27

increases

Question 28

A(n) ____ PV system is a type of stand-alone PV system that uses no active control systems to protect the battery, except through careful design and component sizing.

Answer 28

self-regulating

Question 29

____ modules control current into a battery bank without a charge controller because their current automatically falls as the battery reaches full charge.

Answer 29

Low-voltage

Question 30

A(n) ____ charge controller is a charge controller that limits charging current to a battery system by open-circuiting the array.

Answer 30

series