Question 1

An LED located on the front cover of the smoke detector, manufactured by Whelan Engineering Co., flashes every_______ seconds to indicate the detector is in working order.

Accepted Answer

A)  four 
B)  five 
C)  nine 
D)  ten 
A)  four 
B)  five 
C)  nine 
D)  ten A

Question 2

If a display with a number larger than about 0.55 in. (14 mm) is desired, it will generally use a(n)_______ display.

Accepted Answer

A)  planar gas discharge 
B)  LED 
C)  analog 
D)  fluorescent 
A)  planar gas discharge 
B)  LED 
C)  analog 
D)  fluorescent A

Question 3

What signaling circuits are present in the industrial building?

Accepted Answer

A signaling circuit is defined as any electric circuit that energizes signaling equipment. A signaling system may include one or more signaling circuits. For example, in the industrial building, there are several electrical systems that give recognizable visual and audible signals and are classified as signaling systems:
-a master clock;
-a program system;
-a paging or locating system; and
-a fire alarm system.

Question 4

The_______ system is used to provide automatic signals to signal the beginning and ending of shifts, lunch periods, and breaks.

Accepted Answer

A)  master clock 
B)  program 
C)  fire alarm 
D)  atomic clock 
A)  master clock 
B)  program 
C)  fire alarm 
D)  atomic clock

Question 5

Quartz clocks are generally accurate to within one second per_______ .

Accepted Answer

A)  day 
B)  month 
C)  year 
D)  decade 
A)  day 
B)  month 
C)  year 
D)  decade

Question 6

A(n)_______ is a clock designed to drive some number of units that display the time.

Accepted Answer

A)  alarm 
B)  watch program 
C)  master clock 
D)  atomic clock 
A)  alarm 
B)  watch program 
C)  master clock 
D)  atomic clock

Question 7

The central control unit (CCU) of the fire alarm system manufactured by Jensen Electric Co. is a(n)_______ .

Accepted Answer

A)  mainframe computer 
B)  amplifier 
C)  master clock 
D)  desktop computer 
A)  mainframe computer 
B)  amplifier 
C)  master clock 
D)  desktop computer

Question 8

For a signal or voice to be heard, it should be at least_______ decibels louder than the surrounding noise level at the work station.

Accepted Answer

A)  5 
B)  10 
C)  15 
D)  20 
A)  5 
B)  10 
C)  15 
D)  20

Question 9

What is the name of the tone produced by the paging system that repeatedly ascends from low to high?

Accepted Answer

A)  WHOOP 
B)  HI-LO 
C)  WAIL 
D)  HORN 
A)  WHOOP 
B)  HI-LO 
C)  WAIL 
D)  HORN

Question 10

A sound measured at 95 dB will be_______ .

Accepted Answer

A)  quiet 
B)  loud 
C)  very loud 
D)  uncomfortably loud 
A)  quiet 
B)  loud 
C)  very loud 
D)  uncomfortably loud

Question 11

When selecting a paging system, what five factors should be taken into consideration?

Accepted Answer

When selecting a paging system, several

Question 12

Briefly describe the activation of devices in a Jensen Electric Co. fire alarm system when a fire is detected.

Accepted Answer

When a fire condition is detected, two a

Question 13

In the Jensen Electric Co. fire alarm system, a _______LED indicates that a fire has been detected.

Accepted Answer

A)  green 
B)  yellow 
C)  blue 
D)  red 
A)  green 
B)  yellow 
C)  blue 
D)  red

Question 14

If the incoming ac power should fail,_______batteries continue to provide power to the Jensen Electric Co. fire alarm system.

Accepted Answer

A)  lithium 
B)  lead acid 
C)  alkaline 
D)  nickel cadmium 
A)  lithium 
B)  lead acid 
C)  alkaline 
D)  nickel cadmium

Question 15

Describe the power supply to the processor of the Jensen Electric Co. fire alarm system.

Accepted Answer

The power equipment of the processor is

Question 16

How does the master clock in the industrial building sense time?

Accepted Answer

This master clock senses time by receivi

Question 17

A _______beam atomic clock is used to produce the pulses that are transmitted by the radio station WWV.

Accepted Answer

A)  rubidium 
B)  cesium 
C)  francium 
D)  lithium 
A)  rubidium 
B)  cesium 
C)  francium 
D)  lithium

Question 18

The Jensen Electric Co. fire alarm system uses a combination of smoke detectors and _______.

Accepted Answer

A)  cameras 
B)  sensor microchips 
C)  manual pull handles 
D)  keys 
A)  cameras 
B)  sensor microchips 
C)  manual pull handles 
D)  keys

Question 19

The speed of the synchronous motor used to sense time is proportional to its number of poles and the _______hertz line frequency.

Accepted Answer

A)  40 
B)  50 
C)  60 
D)  70 
A)  40 
B)  50 
C)  60 
D)  70

Question 20

When a fire is detected by the Jensen Electric Co. fire alarm system, two alarm devices are activated: the paging system and the_______ .

Accepted Answer

A)  strobe light 
B)  controller 
C)  CCU 
D)  power supply 
A)  strobe light 
B)  controller 
C)  CCU 
D)  power supply

Exam 7: Signaling Systems

An LED located on the front cover of the smoke detector, manufactured by Whelan Engineering Co., flashes every_______ seconds to indicate the detector is in working order.

If a display with a number larger than about 0.55 in. (14 mm) is desired, it will generally use a(n)_______ display.

What signaling circuits are present in the industrial building?

The_______ system is used to provide automatic signals to signal the beginning and ending of shifts, lunch periods, and breaks.

Quartz clocks are generally accurate to within one second per_______ .

A(n)_______ is a clock designed to drive some number of units that display the time.

The central control unit (CCU) of the fire alarm system manufactured by Jensen Electric Co. is a(n)_______ .

For a signal or voice to be heard, it should be at least_______ decibels louder than the surrounding noise level at the work station.

What is the name of the tone produced by the paging system that repeatedly ascends from low to high?

A sound measured at 95 dB will be_______ .

When selecting a paging system, what five factors should be taken into consideration?

Briefly describe the activation of devices in a Jensen Electric Co. fire alarm system when a fire is detected.

In the Jensen Electric Co. fire alarm system, a _______LED indicates that a fire has been detected.

If the incoming ac power should fail,_______batteries continue to provide power to the Jensen Electric Co. fire alarm system.

Describe the power supply to the processor of the Jensen Electric Co. fire alarm system.

How does the master clock in the industrial building sense time?

A _______beam atomic clock is used to produce the pulses that are transmitted by the radio station WWV.

The Jensen Electric Co. fire alarm system uses a combination of smoke detectors and _______.

The speed of the synchronous motor used to sense time is proportional to its number of poles and the _______hertz line frequency.

When a fire is detected by the Jensen Electric Co. fire alarm system, two alarm devices are activated: the paging system and the_______ .

Plans and Sitework

The Unit Substation

Feeder Bus System

Panelboards

Trolley Busways

Using Wire Tables and Determining Conductor Sizes

Basic Motor Controls

Motors and Controllers

Motor Installation

Power Factor

Ventilating, Air Conditioning, and Other Facilities

System Protection

Lightning Protection

Luminaires

Site Lighting

Programmable Logic Controllers

Developing a Program for a Plc

Fiber Optics

Hazardous Locations

Harmonics

Filters