Introduction to battery-management systems- COURSERA WEEK 01 : Quiz for week 1: final QUIZ

 Introduction to battery-management systems- COURSERA WEEK 01  : Quiz for week 1: final QUIZ

1.

Question 1

Which of the following are examples of automotive embedded systems (select all that apply)?

1 point

The engine controller

The stability-control system

The manual hand brake

The air-bag controller

The traction-control system

2.

Question 2

Which of the following is usually not a function performed by a battery management system (BMS)?

1 point

Control the battery-pack charger

Maintain the battery in a state in which it can fulfill its functional design requirements

Protect the cells of the battery pack from damage

Enforcing the maximum power an application can draw from the battery pack

Protect the safety of the human operator of the battery-powered application

3.

Question 3

Consider the mobile-phone lithium-ion battery cell shown below (both sides are shown).

If a battery is built from four of these cells connected in parallel, what is the nominal capacity of the battery (in Ah)? Enter one digit to the right of the decimal point.

1 point

4.

Question 4

Consider the mobile-phone lithium-ion battery cell shown below.

If a battery is constructed by connecting eight of these cells in series, what is the nominal voltage of the battery (in V)? Enter one digit to the right of the decimal point.

1 point

5.

Question 5

Consider the mobile-phone lithium-ion battery cell shown below (both sides are shown).

A battery is constructed from six of these cells in the following way. First, two modules are constructed, where each module comprises three of these cells wired in parallel. Next, the two modules are wired in series to make the battery.

What is the nominal energy capacity of the battery (in Wh)? Enter two digits to the right of the decimal point.

1 point

6.

Question 6

When an electrochemical cell is being discharged, which cell component gives up electrons to the external circuit?

1 point

The negative electrode

The positive electrode

The electrolyte

The separator

The current collectors

7.

Question 7

Which of the following statements is true?

1 point

During discharge, anions move through the electrolyte toward the negative electrode.

During discharge, cations move through the electrolyte toward the negative electrode.

During discharge, the positive electrode provides electrons to the external circuit.

During charge, the negative electrode is oxidized

During discharge, the separator prevents ions in the electrolyte from flowing from one electrode region to the other

8.

Question 8

When a battery cell is being charged, you observe that charging power appears to be constant for a period of time while voltage is increasing, and then the magnitude of charging power decreases until it is essentially zero while voltage is kept constant. Select all that apply:

1 point

This battery cell has undergone a constant-current constant-voltage charge profile.

The battery cell's state-of-charge increases over the entire interval.

The battery cell is fully charged after the first period of time, when voltage has reached its maximum value.

This type of charging profile is used to ensure that manufacturer-specified voltage limits are not violated, in order to promote safety.

The battery cell has undergone a constant-power constant-voltage charge profile.

9.

Question 9

Consider an electrochemical cell where the negative electrode is zinc (Zn) and the positive electrode is copper (Cu). What would be the standard potential of this cell? (Enter one digit to the right of the decimal point.)

1 point

10.

Question 10

Which of the following are halogens? (Select all that apply.)

1 point

Fluorine

Bromine

Potassium

Sodium

Chlorine

Lithium