ENE 108 Engineering Final Review Study Guide

Which of the following represents the greatest common source of utility power?

A. Oil

B. Natural Gas

C. Nuclear

D. Solar

B. Natural Gas

Which secondary system is used to create and maintain proper atmospheric moisture levels in a critical space?

A. Process Water

B. Compressed Air

C. Vacuum

D. Humidity Control

Humidity Control

Mission Critical Operations are unique because they allow an organization to deliver it product or service without:

A. Profit

B. Integrity

C. Interruption

D. Procedures

C. Interruption

True or False: Upon a loss of utility in a data center, the generator will automatically start and resupply the main switchgear with power.

True

The theory of operations by which a UPS operates is typically known as:

A. Double Interlock theory

B. Double Conversion Theory

C.Dual Zone theory

D. Delta Energy theory

Double Conversion Theory

What are the 2 main purposes of air conditioning

Humidity Control and Take hot air from an unwanted place to move it somewhere it doesn't matter

Define The acronyms below

CRAH-

CRAC-

WSE-

ASE-

CRAH- Computer room Air Handler

CRAC- Computer room air conditioner

WSE- Water side economizer

ASE- Air side economizer

What system types make up critical infrastructure (check all that apply)?

-Power

-HVAC

-Safety

-Landscaping

-Security

All but not landscaping Double check notes

Which group helps define ideal temperature and operating conditions in a data center?

A. ASHRAE

B. NFPA

C. OSHA

D. NEC

ASHRAE

While performing a filter inspection, what type of test is used to check the filter integrity?

A. Luminosity Test

B. Sniff Test

C. Color Test

D. Date inspection

Luminosity Test

Define the terms below using three-word definitions:

Open Transition ______________ ______________ _____________

Closed Transition ______________ ______________ _____________

Open: Break before make

Closed: make before break

What components are typically found in a data center electrical lineup (Check all that apply)

-UPS

-Incoming Utility transformer

-RPP

-PDU

-Switchgear

All of them

Which type of preventative maintenance for HVAC systems involves checking, cleaning, and (as needed) replacing the components of the HVAC system that remove impurities that may disrupt the air flow in the system? (circle one)

A. Filter Maintenance

B. Coil Maintenance

C. Belt Maintenance

D. Testing, adjusting and balancing

A.filter Maintenance

The reason we have to be trained is because during an incident there is an

A____________ D_____________ T____________ F_____________

Accelerated Decision Time Frame

A data center will typically have six security checkpoints from outside to a customer cage. In order these are:

1. Gate access

2. Front door access

3. Lobby Man Trap

Fill in last 3

4. ____________________

5. ____________________

6. ____________________

4. Corridor

5. Cage

6. Card reader

What is the mission critical mindset?

A. Having a vast technical knowledge of every single component of a mission critical system.

B. Having a broad understanding of the different components of a mission critical system and how they work individually within the system

C. Having a broad understanding of how the various components work individually and interact collectively within a mission critical system

D. Having minimal technical knowledge about the component of a mission critical system but a good work ethic

C. Having a broad understanding of how the various components work individually and interact collectively within a mission critical system

List three source of data center make up water

______________ _______________ ________________

Well, city, and grey

When evalulating and selecting the proper location for a new data center, what is the first and likely the most important decision that needs to be made about the site?

A. The available government subsides for building the site

B. The possible man-made threats to the site

C. The potential transportation access to the site

D. The geographical location of the site and the resultant natural threats

D.The geographical location of the site and the resultant natural threats

True or false: A watt is the mathematical equivalent of 10 amps x 1 volt

False

Select all that apply. Advantages of optical fiber include

-Less expensive

-Longer distance

-Less signal break-up

-Lower power consumption

All of them

Which color is typically singlemode fiber?

A. Orange

B. Aqua

C. Yellow

C. yellow

The three types of generators are duty rated and classified as:

S_______________________

P_______________________

C_______________________

Stand By

Prime

Continuous

Match the following terms with the definitions below:

A. Hyperscale Data center

B. Colocation (colo)

_______ A data center facility in which businesses can rent space for servers and other computing hardware. This facility provides the building, cooling, power, bandwidth and physical security

________ Refers to the facilities and provisioning required in distributed computing environments to efficiently scale from few servers to thousands of servers. This type of computing is usually used in environments such as big data and cloud computing

B: A data center facility in which businesses can rent space for servers and other computing hardware. This facility provides the building, cooling, power, bandwidth and physical security

A: Refers to the facilities and provisioning required in distributed computing environments to efficiently scale from few servers to thousands of servers. This type of computing is usually used in environments such as big data and cloud computing

Define the acronyms below.

FACP-

VESDA-

EPO-

P.A.S.S-

FACP- Fire Alarm Control Panel

VESDA- Very early smoke detection apparatus

EPO- Emergency Power off

P.A.S.S- Pull, aim, squeeze, sweep

Which of the following is NOT a part of the fire triangle

-Fuel

-Electricity

-Heat

-Oxygen

Electricity

Define double interlock preaction system?

Requires an independent mechanical and electrical signal to operate

The dry pipe in a data center is typically filled with?

____________________ or ___________________

Nitrogen or air

Which fire detection system functions by sensing the intense light signals that emitted by a fire

A.Beam Detection

B.Smoke and heat detection

C. Flame and flash detection

D. Fire alarms

C. Flame and Flash detection

Which type of fire suppression system functions by dispensing water throughout the affected space in order to reduce the heat below the point of combustion?

B. Sprinklers

Define the acronym PUE and write the formula for it

A. PUE, = -------------------------

PUE- Power usage effectiveness, Total building load/ IT load

Which air flow technique utilizes ducting or contained space below the floor to move cooled air from the air handler around the data center floor?

-Supply Air Plenum

-Room Envelope

-Hot aisle/Cold aisle

-Return air plenum

Supply Air plenum

What is the conversion formula relating tonage, airflow and power

1 ton = 3.51kW = 440CFM

Select all that apply. Advantages of optical fiber include

-Less expensive

-Longer distance

-Less signal break-up

-Lower power consumption

All of them

The 2 hazards of electrcity are

Shock and arc flash

How is arc flashed measured and what measurement.

Incident Energy and cals/cm^2

SCCS-

Short Circuit Coordination Study

5 Parts of any procedures

T____________

D_____________

P ____________

B ____________

B ____________

Title

Description

Prebrief

Body

Backout producers

What size breaker would you need for a chiller that is anticipated to draw 500kw?

800a

Single phase power calculation and three phase calculation

Single: P = IV (I = AMPS)

Triple: P=IV(1.73)(pf)/1000 (pf always 1 in this class)

A client wants to use racks that draw 8kW. The tiles you use at your site deliver 1000 CFM. Can you accommodate this client? Why or why not?

No because the client requires 1002CFM we can only provide 1000 CFM

What is the anticipated power draw for a 3 phase, 208v motor rate for 250a?

89.96 kw

You are designing a data center with (6) 12000 sq ft data hall. Each data hall is designed for 3MW of IT power.

a. What is the design power density for this data center?

b.How many racks can you fit inside each data hall?

c. By design, what will be the average power draw per rack?

d. What will be the total IT power draw for the facility?

e. What size utility feeder do you need if the design PUE is 1.25

f. How many chillers will you need to cool the facility, an N+2, if chiller is rated for 400 tons?

g.How many CFM will be required per data hall?

h. If the CRAH units will be 60-ton units, how many units will be required to be N+4 in one data hall?

i. A client wants to deploy 40 racks in your data center

a. What percent of available space will this client take up?

b. If the client will draw an average of 5kW per rack, what is the total power draw for their deployment?

a. 250w/ft^2

b. 408 racks per hall

c. 7.35kw

d. 18MW

e. 22.5 MW

f. 15 chillers

g. 376,068.376 CFM

h. 19

ia. 10%

ib. 200kw

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