Deck 16: Emergency, Legally Required Sstandby, and Optional Standby Power Systems

Question 1

If two motors are to be started at the same time, the standby power system must have the capacity to provide the of the starting kilovolt-ampere values for the two motors.

A)higher
B)lower
C)product
D)sum

Answer 1

D

Question 2

power supply (UPS) systems are often installed to provide "clean power" to critical loads such as computers.

A)Uninterruptible
B)Unitary
C)UNIX
D)Unconditional

Answer 2

A

Question 3

According to NEC 110.9, switches and fuses must have a(n) capacity not less than the available short-circuit current at their supply terminals.

A)partial
B)total
C)interrupting
D)generating

Answer 3

C

Question 4

Generators must be oversized when supplying loads to reduce heating and voltage waveform distortion.

A)linear
B)nonlinear
C)resistive
D)oscillating

Question 5

The main purpose of a(n) system is to automatically come on to supply, distribute, and control power and illumination essential for safety to human life in the event that the normal supply of power is interrupted.

A)emergency
B)legally required standby
C)optional standby
D)overcurrent

Question 6

According to NEC 700.6(A), a(n) is required for emergency systems to consist of a signal device having both audible and visual alarms.

A)emergency siren
B)legally required standby
C)derangement signal
D)alarm composite

Question 7

Manufacturers of generators, transfer switches, and signaling devices also provide panelboards that have the built right into the panelboard.This is a nice feature for those installations where one panelboard is to serve the emergency or standby power requirements.

A)alternators
B)emergency circuit
C)transfer switch
D)voltage switch

Question 8

What is a legally required standby system?

Question 9

The starting kilovolt-amperes for a motor is equivalent to the kilovolt-amperes of the motor.

A)locked-rotor
B)stator
C)armature
D)rectified

Question 10

In a typical branch-circuit installation for an emergency system, -operated switches are installed to prevent unauthorized personnel from operating the luminaires.

A)fingerprint
B)voice
C)light
D)key

Question 11

NEC 701.12(E) the connection for a legally required standby system to be made ahead of, but not within, the main service disconnect.

A)mandates
B)disallows
C)permits
D)discourages

Question 12

When are self-contained emergency power systems used?

Question 13

Many types of healthcare facilities are covered in NEC Article 517.generally have the most stringent requirements, and clinics and medical and dental offices have the least stringent requirements.

A)Hospitals
B)Psychiatric facilities
C)Nursing homes
D)Ambulatory care centers

Question 14

What is the mechanism behind the generation of backfeed?

Question 15

Why is it important to accurately determine the capacity of a power system?

Question 16

Fuels that may be used in an emergency generator are LPG (liquid propane) gas, natural gas, gasoline, or .

A)fusel
B)diesel fuel
C)ethanol
D)kerosene

Question 17

There have been many injuries and deaths as a result of ; it has been called "the Hidden Killer."

A)backfeed
B)harmonic current
C)triplens
D)overcurrent

Question 18

What are the advantages and disadvantages of selecting diesel fuel engines?

Question 19

Generator units having a capacity greater than 15 kilowatts generally use cooling.

A)LP gas
B)air
C)liquid
D)no

Question 20

The Life Safety Code is another name for .

A)NFPA 99
B)NFPA 101
C)NFPA 110
D)IEEE 446