101 Basic Series - Module 15 - CEU Education
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1
Most personal computers have a ___________ port to communicate with a modem or a mouse.
RS-232
RS-422
RS-485
2
Monitoring of a power system can provide data reducing labor costs, reporting errors, and dangerous situations.
True
False
3
Harmonics operate at the _______________ frequency of all power quality disturbances.
Highest
Lowest
4
The double-ended substations system design offers two primary services separated by a TIE breaker.
True
False
5
________is a high-speed, low-cost, flexible network that is not vendor dependent, and allows information to be sent across the plant or around the world.
CSMA/CD
TCP/IP
Ethernet
DeviceNet
6
Transients or surges are usually sub-cycle increases in voltage.
True
False
7
Electro-mechanical equipment is especially sensitive to variations in power quality.
True
False
8
_________ industry tends to define uptime as "maximizing return on investment".
Paper
Automotive
Steel
Petrochemical
9
Distribution monitoring can locate problems within a facility and set off alarms when systems are at thresholds.
True
False
10
A _______ in voltage can be caused by several large motors or loads turning off at once.
Sag
Swell
Noise
Harmonic
11
__________ are caused by non-linear loads such as adjustable frequency drives.
Sags
Swells
Noise
Harmonics
12
By tracking and trending system life and performance, maintenance needs can be predicted, scheduled and implemented with a minimum amount of downtime.
True
False
13
If the magnitude and impact of downtime costs are not severe, the simple radial system may be a good choice for a facility.
True
False
14
Variable-speed drive operation can cause transients and surges in power quality.
True
False
15
Noise distortion is unwanted electrical signals on the steady state voltage waveform.
True
False
16
By logging the time various power events occur, clues about the nature and cause of a power problem can be discerned.
True
False
17
_________ software can graphically identify usage trends over specific time periods.
Energy trending
Energy billing
Energy tracking
System monitoring
18
Developing an energy management plan helps to identify energy costs, its effect on the facility's operating budget, and the unit cost of their product.
True
False
19
___________ represents the utility's costs of maintaining the generating capacity required to service their entire customer base.
Demand spikes
Demand leveling
Demand charges
Peak demand
20
A power quality disturbance can range from a microsecond to a constant steady state.
True
False
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