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WorksheetsIVC - Energy Storage System Final Exam
Total questions: 60
Worksheet time: 20mins
Name
Class
Date
1.
Which one is not true about hydrogen
a)
Can be made cleanly using water
b)
Can be stored as a liquid or gas
c)
Lower energy density than batteries when compressed
d)
Can be stored, transported & exported
2.
Which industry is the largest consumer of hydrogen
a)
Petroleum refining
b)
Methanol production
c)
Ammonia Production
d)
Transportation
3.
Most of hydrogen globally is produced by this method
a)
Coal gasification
b)
Steam reforming of natural gas
c)
Partial Oxidation of Hydrocarbon
d)
Electrolysis
4.
What is the most efficient way of storing hydrogen volumewise?
a)
in a tank at atmospheric pressure
b)
in form of Ammonia
c)
in a pressurized vessel at 700 bar
d)
Liquified
5.
Metal hydride hydrogen storage usually operate at which pressure?
a)
3-30 atm
b)
200-700 atm
c)
1 bar
d)
1000 bar
6.
Which one of the following is not considered as porous material for hydrogen storage
a)
Carbon Nanotubes
b)
Metal Organic Frameworks
c)
Chemical hydrides
7.
What is a drawback of carbon nanotubes for hydrogen storage application?
a)
high electrical conductivity
b)
remarkable strenght
c)
high thermal conductivity
d)
low conductivity
8.
Which material characteristic that is usually not required for hydrogen storage
a)
high hydrogen capacity per unit mass
b)
very high heat disformation
c)
high stability against oxygen and moisture
d)
fast kinetics
9.
Interaction between adsorbent and adorbate is called …
a)
chemisorption
b)
biosorption
c)
physisorption
d)
thermosorption
10.
Which one of the following is not a shape of adsorbent
a)
cylindrical pellets
b)
beads
c)
flakes
d)
concentrated fluids
11.
A structure with size of 20-500 Angstrom can be called as
a)
macropore
b)
micropore
c)
mesopore
d)
nanopore
12.
Which one is not true for metal organic frameworks?
a)
well-defined tailorable cavities with uniform size
b)
fixed pore size
c)
good stability
d)
high void volumes
13.
What is an advantage of covalent organic frameworks?
a)
preparation cost
b)
synthesis process
c)
specific surface area
d)
mechanical stability
14.
Hydro system can be categorized to the following, except
a)
Microhydro
b)
Megahydro
c)
Minihydro
d)
Terahydro
15.
In Indonesia, usually microhydro system capacity is rated at
a)
less than 1 MW
b)
1-5 MW
c)
up to 5 MW
d)
up to 200 MW
16.
Unique characteristic of microhydro is
a)
no dam required
b)
intake dam required
c)
check dam required
d)
require big river
17.
The following are microhydro turbine types, except
a)
Pelton turbine
b)
Francis turbine
c)
Crossflow turbine
d)
AWS turbine
18.
Hydro system can be used as storage, in form of?
a)
SMES hydro
b)
Pumped hydro
c)
thermal reservoir
d)
Flywheels
19.
Which parameter is the most important for microhydro system design
a)
Water flow rate
b)
Water credit
c)
Rain height
d)
Well head
20.
Typical efficiency of cross flow turbine microhydro system is
a)
90%
b)
63%
c)
0.98
d)
0.75
21.
Which turbine type can harvest with 500m head?
a)
Pelton turbine
b)
Cross flow turbine
c)
Francis turbine
d)
AWS turbine
22.
Which mechanism is used to obtain optimal RPM for generator on a microhydro system?
a)
gearbox
b)
conveyor
c)
brake
d)
pulley
23.
Mechanical-mechanical energy conversion in a microhydro system can be found for?
a)
irrigation pump
b)
electricity generation
c)
wind generation
d)
signal generator
24.
This component is repsonsible to optimize the RPM of microhydro turbine
a)
off grid inverter
b)
Flow Controller Synchronizer
c)
electronic ballast
d)
grid tie inverter
25.
Typical governor for isolated microgrid system is?
a)
off grid inverter
b)
Flow Controller Synchronizer
c)
Electronic Load Controller
d)
grid tie inverter
26.
Which technology is an enabler for hybrid system between microhydro, PV, dan wind?
a)
grid system
b)
battery system
c)
turbine technology
d)
grid tie inverter
27.
Forms of BESS coupled system, except?
a)
DC coupled
b)
AC coupled
c)
Hybrid
d)
Combine Coupled
28.
Low Voltage Energy Harvest generally effective in ?
a)
DC coupled
b)
AC coupled
c)
Hybrid
d)
Combine Coupled
29.
MPPT is ?
a)
maximum power point tracker
b)
minimum power point tracker
c)
Middle power point tracker
30.
The advantages of power clipping procedure are, except
a)
Lower inverter investment
b)
better energy management
c)
capacity firming
d)
higher operating cost
31.
General DC/AC Ratio for PV Inverter production is?
a)
1,0 - 1,5
b)
1,5 - 2,0
c)
0,8 - 1,0
d)
0,1 - 0,5
32.
The target economical cost for battery system is ?
a)
1000 USD / kWh
b)
100 USD / kWh
c)
200 kWh
d)
100 kWh
33.
The current Battery Pack Market Segment Component, except?
a)
BMS
b)
Battery Data Center
c)
Thermal Management
d)
Safety Component
34.
The general capacity of Large Battery Energy Storage System is
a)
> 20kWh
b)
20 to 200 kWh
c)
>200 kWh
d)
<200 kWh
35.
The advanced battery thermal management system is by using ?
a)
air cooling
b)
water cooling
c)
phase change material
d)
housing integration
36.
The current technology trend standard for battery pack Voltage is ?
a)
400 V
b)
800 V
c)
350 kW
d)
1000 V
37.
The current bottle neck in battery technology trend is?
a)
Battery pack charge power capacity
b)
Modular Capability
c)
Charging Station
d)
Vehicle Platform
38.
What is the average energy density of Lithium Ion Battery?
a)
150 Wh/kg
b)
15 kWh/kg
c)
1500 Wh/kg
d)
150 kWh/kg
39.
The following are parts of BESS, except
a)
Energy Management System
b)
Grid Battery System
c)
Cable Management System
d)
Power Conversion System
40.
What is the purpose of ESS application for Frequency Regulation?
a)
to provide grid stabilized back-up power
b)
local peak shifting
c)
PV integration
d)
energy arbitrage
41.
Energy arbitrage is part of ESS application for …
a)
Load Leveling
b)
Frequency Regulation
c)
Residential Energy Storage
d)
Community Energy Storage
42.
Which one is not an advantage of PV system?
a)
abundant energy resource at no cost
b)
energy resources need to be transported
c)
minimum cost on operation
d)
no emission
43.
Which one of the typical PV System uses DC Bus for power distribution?
a)
PV Mini-Grid
b)
Solar Home System
c)
PV Hybrid
d)
PV Grid Connected
44.
The following are components of pump storage hydro system, except
a)
Turbine
b)
Reservoir
c)
Pump
d)
CHP
45.
Which one is the disadvantage of AC coupling system
a)
less efficient for day use
b)
lower efficienty for night use
c)
more expensive for large capacity
d)
more difficult to develop
46.
DC coupling system is more efficient for night use
a)
True
b)
False
47.
As a rule of thumb, what's the minimum PV panel tilt angle?
a)
10 degree
b)
25 degree
c)
45 degree
d)
60 degree
48.
Which performance indicator solely belongs to PV module?
a)
production factor
b)
demand factor
c)
capacity factor
d)
performance ratio
49.
Typical battery pack in low voltage system, except
a)
48 V
b)
24 V
c)
12 V
d)
64 V
50.
DoD of battery equal of ?
a)
1 / SoC
b)
100% - SoC
c)
SoC / 100%
d)
100% * SoC
51.
Moving peak load to another time of day is a demand side management called?
a)
Load shifting
b)
Peak clipping
c)
Valley filling
d)
Load shaping
52.
A 100Ah battery in full charge condition is discharged by C/20 current rate. How long it takes to empty state?
a)
20 hours
b)
5 hours
c)
100 hours
d)
2 hours
53.
There is a difference in the Battery charging/discharging voltage characteristics at the same SoC
a)
True
b)
False
54.
Battery State of Heath (SOH) means?
a)
time of use / time of manufacturing
b)
actual capacity / nominal capacity
c)
symptoms / condition
d)
measured capacity / deteriorated capacity
55.
Battery initial condition is measured at empty charge
a)
True
b)
False
56.
The general recommended batterry working area is between
a)
10 - 90 % SoC
b)
0 - 100 % SoC
c)
20 - 80% SoC
d)
0 - 80 % SoC
57.
Battery configuration from smallest to largest
a)
Module < Cell < BESS < Pack
b)
BESS < Pack < Module < Cell
c)
Cell < Module < Pack < BESS
d)
Pack < Cell < Module < BESS
58.
Which type of battery has the best round trip efficiency?
a)
Li-ion
b)
VLRA
c)
NAS
d)
NI-CD
59.
The form of electrical energy storage.
a)
Capacitor
b)
Sensible heat storage
c)
Battery
d)
CAES
60.
Solar Power and Wind Power are always available!
a)
True
b)
False
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