CDCDP UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Question:
1. Environment and Energy Cost
Answer:
- Local or national electrical shortages
- Utilizing generators as prime power source
- Price volatility
Question:
2. Environmental Total Cost of Ownership (TCO)
Answer:
- Financial TCO
- Energy reuse
Question:
3. The Electricity at Work Regulations (1989)
Answer:
Enforces application of safe practices into all electrical works in the UK. Relevant to all work activities
and premises, except certain offshore installations and particular ships. Intended to assist duty-holders in
meeting regulatory requirements, it will be of interest and practical help primarily to engineers (including
those involved in design, construction, operation, or maintenance of electrical systems and equipment),
technicians and their managers
Question:
4. Electricity at Work: Safe Working Practices
Answer:
The guidance covers key elements to consider when devising safe working practices, and is for people who
carry out work on or near electrical equipment. It includes advice for managers and supervisors who
control or influence the design, specification, selection, installation, commissioning, maintenance, or
operation of electrical equipment. This third edition updates the guidance and provides sources of further
information
Question:
5. National Electrical Code (NEC)
Answer:
The National Electrical Code (NEC), or NFPA 70, is a United States standard for the safe installation of
electrical wiring and equipment.
Question:
6. Climate Change Agreements (CCAs)
Answer:
Report energy use and carbon emissions against agreed targets over four, two-year target periods
,Question:
7. The BREEAM Data Centre scheme
Answer:
"BREEAM Data Centres" is an assessment method and certification scheme that can be used at the design,
construction, and refurbishment phases of data centre buildings. The scheme is used to assess the
environmental impact of unoccupied or occupied data centre buildings.
Question:
8. LEED - Data Centre Integration
Answer:
In November 2012 data centres were formally recognized under Leadership in Energy and Environmental
Design (LEED)
Question:
9. Ohm's Law
Answer:
In 1827, the German scientist Georg Simon Ohm discovered that voltage is proportional to current:
- Resistance (R) x Current (I) = Voltage (V)
- V=IR
Question:
10. Joule's Law
Answer:
In 1841, the English scientist James Joule discovered that the power dissipated by a current flowing in a
material is:
- P = VI, or
- P = I2R
Question:
11. Kirchhoff's Current Law
Answer:
What goes in must come out, at any junction.
Question:
12. Kirchhoff's Voltage Law
Answer:
There is no such thing as perpetual motion.
Question:
13. Resistance - Ohm (Ω):
Answer:
A measure of the degree to which an object opposes an electric current through it
Question:
14. Inductance - Henry (L)
,Answer:
Is the property of an electrical current causing voltage to be generated, proportional to the rate of change in
current in a circuit (property also called self-inductance to discriminate it from mutual inductance)
Question:
15. Conductance - Siemens (S)
Answer:
Electrical resistance is measured by its opposition to the passage of an electrical current; the inverse
quantity is electrical conductance measuring how easily electricity flows along a certain path. Hence, one
Siemens = The reciprocal of one Ohm. Also referred to as the 'Mho'
Question:
16. Capacitance - Farad (F)
Answer:
Is the ability of a body/circuit to hold an electrical circuit
Question:
17. Electrical Power Grid
Answer:
The combined electrical power transmission and distribution network is known as the "power grid" in the
United States, or just "the grid"
Question:
18. Utility Power System
Answer:
The power system may be interconnected at all levels (or not!)
Question:
19. External Power Sources
Answer:
The preferred source of electrical power is delivered to a data centre by the local utility company
Question:
20. Transient Voltage Surge Suppressor (TVSS)
Answer:
The TVSS protects data processing and other critical equipment against voltage transients (sags and
surges)
Question:
21. Bloom Energy Server
Answer:
is a new class of distributed power generator, producing clean, reliable, affordable electricity at the
customer site.
Question:
22. Increased reliability - and lower total cost of ownership (TCO)
, Answer:
Bloom energy delivers a continuous source of UPS-quality power. Modular architecture enables operators
to specify the level of availability, and N+M configurations to suit multiple needs (where N = number
required and M = the number installed). Bloom draws fuel from the highly-reliable natural gas grid, and
utilizes the electric grid as backup. This delivers an order-of-magnitude greater reliability than traditional
approaches, at lower lifetime costs
Question:
23. Avoid Uninterruptible Power Systems (UPS) and diesel generation
Answer:
A data centre powered by Bloom energy eliminates the need for traditional backup equipment like diesel
generators, UPS, batteries, and complex switchgear. This suite of legacy components is still too expensive,
unreliable, and cumbersome. Bloom enables data centre supplies to rely on a simpler, cleaner, lower-cost
solution
Question:
24. Energy-efficient, no water use
Answer:
Bloom energy servers generate power at unmatched electrical efficiencies. Further, by generating power
onsite, they avoid 7 to 15% losses from transmission across the grid, and also avoid similar additional
losses from duplicate UPS systems (themselves employing inefficient, dual-conversion architecture).
Bloom cells can run on 100% renewable biogas, and consume no water during normal operation
Question:
25. Future applications
Answer:
This is just the beginning - Bloom energy can be deployed across the globe, tailored to any need. From
urban nodes for low-latency, to core data centres at low TCO, Bloom energy's solution will be a catalyst
for reimagining data centre design and deployment worldwide
Question:
26. Reduced CO2 emissions
Answer:
Dramatically more ozone-friendly against traditional fossil fuel-based applications
Question:
27. Main Power Distribution System
Answer:
The main power distribution subsystem is the portion of the electrical system between the service entrance
and the UPS systems
Question:
28. Main Switchboard
ANSWERS
Question:
1. Environment and Energy Cost
Answer:
- Local or national electrical shortages
- Utilizing generators as prime power source
- Price volatility
Question:
2. Environmental Total Cost of Ownership (TCO)
Answer:
- Financial TCO
- Energy reuse
Question:
3. The Electricity at Work Regulations (1989)
Answer:
Enforces application of safe practices into all electrical works in the UK. Relevant to all work activities
and premises, except certain offshore installations and particular ships. Intended to assist duty-holders in
meeting regulatory requirements, it will be of interest and practical help primarily to engineers (including
those involved in design, construction, operation, or maintenance of electrical systems and equipment),
technicians and their managers
Question:
4. Electricity at Work: Safe Working Practices
Answer:
The guidance covers key elements to consider when devising safe working practices, and is for people who
carry out work on or near electrical equipment. It includes advice for managers and supervisors who
control or influence the design, specification, selection, installation, commissioning, maintenance, or
operation of electrical equipment. This third edition updates the guidance and provides sources of further
information
Question:
5. National Electrical Code (NEC)
Answer:
The National Electrical Code (NEC), or NFPA 70, is a United States standard for the safe installation of
electrical wiring and equipment.
Question:
6. Climate Change Agreements (CCAs)
Answer:
Report energy use and carbon emissions against agreed targets over four, two-year target periods
,Question:
7. The BREEAM Data Centre scheme
Answer:
"BREEAM Data Centres" is an assessment method and certification scheme that can be used at the design,
construction, and refurbishment phases of data centre buildings. The scheme is used to assess the
environmental impact of unoccupied or occupied data centre buildings.
Question:
8. LEED - Data Centre Integration
Answer:
In November 2012 data centres were formally recognized under Leadership in Energy and Environmental
Design (LEED)
Question:
9. Ohm's Law
Answer:
In 1827, the German scientist Georg Simon Ohm discovered that voltage is proportional to current:
- Resistance (R) x Current (I) = Voltage (V)
- V=IR
Question:
10. Joule's Law
Answer:
In 1841, the English scientist James Joule discovered that the power dissipated by a current flowing in a
material is:
- P = VI, or
- P = I2R
Question:
11. Kirchhoff's Current Law
Answer:
What goes in must come out, at any junction.
Question:
12. Kirchhoff's Voltage Law
Answer:
There is no such thing as perpetual motion.
Question:
13. Resistance - Ohm (Ω):
Answer:
A measure of the degree to which an object opposes an electric current through it
Question:
14. Inductance - Henry (L)
,Answer:
Is the property of an electrical current causing voltage to be generated, proportional to the rate of change in
current in a circuit (property also called self-inductance to discriminate it from mutual inductance)
Question:
15. Conductance - Siemens (S)
Answer:
Electrical resistance is measured by its opposition to the passage of an electrical current; the inverse
quantity is electrical conductance measuring how easily electricity flows along a certain path. Hence, one
Siemens = The reciprocal of one Ohm. Also referred to as the 'Mho'
Question:
16. Capacitance - Farad (F)
Answer:
Is the ability of a body/circuit to hold an electrical circuit
Question:
17. Electrical Power Grid
Answer:
The combined electrical power transmission and distribution network is known as the "power grid" in the
United States, or just "the grid"
Question:
18. Utility Power System
Answer:
The power system may be interconnected at all levels (or not!)
Question:
19. External Power Sources
Answer:
The preferred source of electrical power is delivered to a data centre by the local utility company
Question:
20. Transient Voltage Surge Suppressor (TVSS)
Answer:
The TVSS protects data processing and other critical equipment against voltage transients (sags and
surges)
Question:
21. Bloom Energy Server
Answer:
is a new class of distributed power generator, producing clean, reliable, affordable electricity at the
customer site.
Question:
22. Increased reliability - and lower total cost of ownership (TCO)
, Answer:
Bloom energy delivers a continuous source of UPS-quality power. Modular architecture enables operators
to specify the level of availability, and N+M configurations to suit multiple needs (where N = number
required and M = the number installed). Bloom draws fuel from the highly-reliable natural gas grid, and
utilizes the electric grid as backup. This delivers an order-of-magnitude greater reliability than traditional
approaches, at lower lifetime costs
Question:
23. Avoid Uninterruptible Power Systems (UPS) and diesel generation
Answer:
A data centre powered by Bloom energy eliminates the need for traditional backup equipment like diesel
generators, UPS, batteries, and complex switchgear. This suite of legacy components is still too expensive,
unreliable, and cumbersome. Bloom enables data centre supplies to rely on a simpler, cleaner, lower-cost
solution
Question:
24. Energy-efficient, no water use
Answer:
Bloom energy servers generate power at unmatched electrical efficiencies. Further, by generating power
onsite, they avoid 7 to 15% losses from transmission across the grid, and also avoid similar additional
losses from duplicate UPS systems (themselves employing inefficient, dual-conversion architecture).
Bloom cells can run on 100% renewable biogas, and consume no water during normal operation
Question:
25. Future applications
Answer:
This is just the beginning - Bloom energy can be deployed across the globe, tailored to any need. From
urban nodes for low-latency, to core data centres at low TCO, Bloom energy's solution will be a catalyst
for reimagining data centre design and deployment worldwide
Question:
26. Reduced CO2 emissions
Answer:
Dramatically more ozone-friendly against traditional fossil fuel-based applications
Question:
27. Main Power Distribution System
Answer:
The main power distribution subsystem is the portion of the electrical system between the service entrance
and the UPS systems
Question:
28. Main Switchboard
