Kirchhoff's voltage law states that the sum of all voltages in a closed loop equals zero.
v1 + v2 + v3 + v4 = 0
In Series: Voltage is additive. (Vtotal= V1+V2...) In Parallel: Voltage is constant. (Vtotal=V1=V2...)
Card 102
Question
What is Ohm’s Law?
Answer
E=I*R
Card 103
Question
What is power factor?
Answer
Ratio of real to apparent power
Card 104
Question
What is Reactive Power (R)? What're the units?
Answer
Power that doesn't perform work- is lost to inductors and capacitors. Power Measured in Volt-Amps-Reactive.
Card 105
Question
What is Real Power (P)? What're the units?
Answer
Power used to perform work. Measured in Watts.
Card 106
Question
What is Resistance (R)? What're the units?
Answer
Measurement of opposition to current flow. Measured in Ohms.
Card 107
Question
What is the DC Power Equation?
Answer
P=I*V
Card 108
Question
What is the difference between hot, neutral, and ground?
Answer
Hot: Supply path for current.
Neutral: Return path for current.
Ground: Safety feature to eliminate shock hazards.
Card 109
Question
What is the difference between series and parallel pump operations?
Answer
Pumps in series will raise discharge pressure at a constant flow rate.
Pumps in parallel will raise flow rate at a constant discharge pressure.
Card 110
Question
What is Voltage (E)? What're the units?
Answer
Difference in electric potential between two points. Work per unit charge. Measured in Volts
Card 111
Question
What’s the difference between a positive displacement and centrifugal pump?
Answer
Positive displacement: At a given speed, pumps a volume regardless of downstream pressure.
Centrifugal Pump: At a variable speed and flow rate, will pump downstream if pressure doesn't exceed discharge pressure.
Card 112
Question
How do you escalate a medical emergency?
Answer
911 or local dispatch Immediately then escalate to building FM.
Card 113
Question
If there is a breakdown in the escalation chain, what actions should the EOT take to escalate
Answer
Follow the escalation wiki. Continue contacting the next person on the chain until you speak to someone.
Card 114
Question
List of reasons to engage teams IE controls, FE, ATS team, Gen Team, ETC.
Answer
Controls: Emergent controls issues that cannot be solved utilizing the controls troubleshooting wiki.
FE: Tripped breaker that exceeds 32 amps. If it's urgent outside of normal business hours, cut a sev 2.5 ticket and they'll address first thing in the morning.
Maintenance teams: Contact for support in instances where specialized equipment is alarming and you've exhausted all resources in mitigating.
Card 115
Question
What actions require escalation for authorization to perform?
Answer
Closing of a tripped breaker not associated with rack down event
Power cycling of EPMS units via the EPMS Troubleshooting Guides
Card 116
Question
What is the policy for critical equipment maintenance regarding: AHU/air handler Maintenance
Answer
N minimum maintained in the Pod at all times. In Pods with opposing AHUs, never have both left and right side down concurrently. No more than 2 AHUs per pod recommended to be out of service. In the Electrical rooms, only one air handler down at a time.
Card 117
Question
What is the policy for critical equipment maintenance regarding: Annual UPS/GEN maintenance
Answer
One UPS OR GEN per building at a time. Two UPS OR GEN max per AZ unless AZ is five buildings, then three of five buildings may have a single UPS OR GEN down for annual service.
Card 118
Question
What is the policy for critical equipment maintenance regarding: Battery maintenance
Answer
No more than one string out of service per UPS at any given time, per UPS, four UPS per building allowed. No more than eight strings down per AZ unless AZ is five buildings, then up to 1welve strings may be in maintenance at any given time. Include string maintenance with UPS annual service whenever possible.
Card 119
Question
What is the policy for critical equipment maintenance regarding: Controls Maintenance on EPMS
Answer
Evaluate on a case-by case basis the work, possible impact to the pod and rollback/recovery time.
Card 120
Question
What is the policy for critical equipment maintenance regarding: IR scans
Answer
No restrictions on IR scan. Observe all PPE, and restricted/exclusion zones when covers are removed.
How to use this set
Read the preview and check whether the content and answers suit your learning goal. You can add the public set to your sets to study it. Your account shows the available actions.