Year 3 IEC FINAL Review

Temporary electric splices are to be insulted and inaccessible. When these splices are more than ___ feet above the floor, they are considered to be inaccessible. Select one: a. 16 b. 8 c. 12 d. 10 e. 6 1/2

8

A ___ system is used for surveillance and/or recorded documentation. Select one: a. MATV b. CATV c. CCTV d. any of these

CCTV

A melting allow overload in a magnetic motor starter ____. Select one: a. actuates when excessive motor circuit current is present and opens only the affected motor circuit power contacts on the starter b. must be replaced after it operates c. can be reset immediately after it operates d. actuates when excessive motor circuit current is present and opens the control circuit to de-energize the coil e. actuates when excessive control circuit current is present and opens the control circuit to de-energize the coil

actuates when excessive motor circuit current is present and opens the control circuit to de-energize the coil

A CATV network may utilize a head-end to provide pre-recorded information. This information can be sent over a specific channel of the MATV system. __ are typical for an MATV system. Select one: a. Universities b. Large hotels c. Dormitories d. all of these

all of these

All materials stores in tiers shall be stacked, racked, blocked, interlocked, or otherwise secured to prevent ___. Select one: a. sliding b. falling c. collapse d. all of these

all of these

Most clothing designed for fashion is not recommended as construction wear because it ___. Select one: a. can get caught on or in a machinery or equipment b. is not made to provide protection c. can be baggy or loose d. is not made of heavy duty materials e. all of the above f. none of the above

all of these

From the head-end of the CCTV system, ___. Select one: a. cables are installed to uniquely identify each camera b. one cable is installed to the nearest camera and continues to the remaining cameras c. both a and b

cables are installed to uniquely identify each camera

Dual-voltage, wye-wound, 9lead motors ___ be field-connected in delta. Select one: a. can b. cannot

cannot

Because it provides less signal loss, quad-shield coaxial cable is used for ___ TV signals. Select one: a. analog b. digital

digital

Refer to Figure 321.13 Symbol S is a ___. Select one: a. circuit interrupter (or breaker) b. disconnect (or safety switch) c. circuit breaker with thermal OLs d. circuit breaker with magnetic OLs e. circuit breaker with thermal and magnetic OLs

disconnect (or safety switch)

A computer network can be __. Select one: a. hardwired b. wireless c. either a or b d. neither a nor b

either a or b

Inherent motor protection devices are built into the ___ and are reset automatically. Select one: a. motor b. starter

motor

To provide convenience receptacles and lighting for temporary construction sites, a minimum of __ circuits are required. Select one: a. two b. one c. three d. five

two

To minimize injury hazards while driving, you should ___. Select one: a. wear safety belts b. secure loose items c. both a and b

wear safety belts and secure loose items

Between 2003-2017 there were ____ deaths in highway construction in the U.S. Select one: a. 1,311 b. 66,690 c. 131,300 d. 1,844

1,844

During the period of construction, ___ foot candles are required in electrical equipment rooms. Select one: a. 3 b. 30 c. 5 d. 10 e. 12

10

A manual reversing starter is an assembly that includes ___ and a mechanical interlock. I. 2 contactors II. 2 OL sections III. 1 contactor IV. 1 OL section Select one: a. I & II b. II & III c. I & IV d. III & IV

2 contactors, 1 OL section

in a three-phase system, a voltage unbalance greater than __ from the average voltage should be investigated. Select one: a. 7.2 percent b. 2 percent c. 3.6 volts d. 5 percent

2 percent

A 240-volt, 3Φ motor would require a starter with a minimum of ___ power pole(s) to open the circuit. Select one: a. 3 b. 1 c. 2

3

The pairs in CAT ___ UTP cables have the least amount of twist. Select one: a. 6 b. 5E c. 3

3

The maximum channel length limitation for UTP cable is ___ feet. Select one: a. 500 b. 1000 c. 750 d. 330

330

In 2019, there were more than ___ fatalities on our highways in the U.S. Select one: a. 2.5 million b. 5 million c. 36 thousand d. 250 thousand

36 thousands

For any debris dropped through floors without the use of chutes, the area onto which the material is dropped shall be barricaded to a height of not less than ___ inches and 6 feet back from the opening. Select one: a. 72 b. 96 c. 60 d. 42

42

The maximum length limitation for RG-69 cable is ___ feet. Select one: a. 500 b. 1000 c. 750 d. 330

500

Cat ___ UTP cables are used for LANs. I. 6 II. 3 III. 5E Select one: a. I only b. I or II only c. I, II, or III d. II only e. I or III only

6 or 5E

Stored bricks shall not be stacked more than ___ feet high. Select one: a. 16 b. 20 c. 3 d. 7

7

Residential audio systems generally utilize ___-ohm speakers. Select one: a. 8 b. 25 c. 70 d. 50

8

Highway fatalities represent more than ___% of all transportation related fatalities. Select one: a. 60 b. 90 c. 40 d. 25

90%

Because of the relative low voltages, working with batteries poses no electrical hazard. Select one: a. True b. False

False

Internal drum switch connections are made between terminals 5 and 6 when the switch is in the ___ position. Select one: a. Forward b. Reverse c. both a and b d. neither a nor b

Forward and Reverse

OSHA regualtion CFR1926.250 covers materials handling ___. I. storage II. use III. disposal Select one: a. I only b. I, II & III c. III only d. II only

Storage, use & disposal

Battery rooms require adequate ventilation to remove gasses. Select one: a. True b. False

True

Conductive Jewelry can be an electrical hazard around any energized equipment. Select one: a. True b. False

True

Long-sleeved shirts provide some degree of protection against the damaging rays of the sun. Select one: a. True b. False

True

Rubber insulating blankets and other types of insulating materials can be very helpful in working safely around batteries and equipment. Select one: a. True b. False

True

Where construction work is in progress, OSHA requires areas, aisles, stairs , ramps, runways, corridors, offices, shops, and storage areas to be lighted. Select one: a. True b. False

True

On road construction projects, flaggers must wear vests that are ___ any barricades. Select one: a. the same color as b. a different color than

a different color than

Cat 3, 5E, and 6 UTP cables contain ___. Select one: a. 22- to 24-gauge copper wire b. twisted pairs of wire c. unshielded wire d. all of these

all of these

Components of a basic network include ___. Select one: a. devices b. a head-end c. cable d. a public provider e. all of these

all of these

Factors that can increase a person's likelihood of heat illness include ___. Select one: a. poor physical condition b. heart problems c. weight d. previous heat illness e. all of these

all of these

For Voice/Data/Video network projects, the electrical contractor should __. Select one: a. determine if he is to install and terminate the cabling b. determine if the network is to be powered by a 120-Vac circuit c. understand his responsibilities for the successful completion of the project d. determine if the work is to be performed under his construction permit e. all of these

all of these

If the maximum permitted tension is exceeded when installing UTP cable, the performance can be affected due to __. Select one: a. attenuation b. crosstalk c. increased impedance d. all of these

all of these

Many job specifications require phase-reversal protection from three-phase motors operating ___. Select one: a. escalators b. ski lifts c. elevators d. all of these

all of these

Symptoms of heat exhaustion include __. Select one: a. muscle weakness b. headache c. shortness of breath d. difficulty continuing to work e. all of these

all of these

Symptoms of heat stoke include ___. Select one: a. lack of sweating b. irrational behavior c. hot, dry skin d. identification of potential risks e. all of these

all of these

Typical VDV networks include those provided for ___ systems. Select one: a. audio b. CATB c. telephone d. video e. all of these

all of these

When worn in construction, work boots should ___. Select one: a. be properly fitted to your feet b. have soles that provide good traction c. have soles that resist puncture d. all of these e. none of these

all of these

Which of the following can positively affect your driving safety? Select one: a. properly functioning wipers b. properly inflated tires c. the use of headlights d. the use of seatbelts e. all of these

all of these

CCTV coax cable is constructed with a(n) ___ shield Select one: a. copper b. aluminum c. either a or b

aluminum

A dual-voltage motor could be a __ motor. Select one: a. 120- or 240-volt, 1Φ b. 240- or 480-volt, 1Φ c. 240- or 480-volt, 3Φ d. any of these

any of these

An audio system network can be utilized to provide __. Select one: a. paging b. emergency notification c. background music d. any of these

any of these

Audio systems can utilize __ cables. Select one: a. CMR| b. CMG c. CMP d. any of these

any of these

Audio systems can utilize ___ cables. Select one: a. CMR b. CMG c. CMP d. any of these

any of these

Fiber optic cables can be terminated with __ connectors. Select one: a. ST b. LC c. FC d. any of these

any of these

Impaired driving can be caused by __. Select one: a. lack of sleep or fatigue b. any of these c. consumption of alcohol d. the use of prescription drugs e. anger or frustration

any of these

Optical fiber cable is permitted to be installed ___. Select one: a. as direct burial cable b. underground in conduit c. as an aerial cable} d. indoors e. any of these

any of these

When used for a business facility's computer network, the MDF may ___. Select one: a. be the primary connection point for the internet provider b. contain the client servers c. be connected to an IDF for large systems d. any of these

any of these

Free-standing temporary light stands ___ permitted to be used on construction sites. Select one: a. are not b. are

are

Inherent motor protection devices are built into the motor and are reset ___. Select one: a. manually b. automatically

automatically

Driving speeds should be ___. I. below the legal maximum II. above the legal minimum III. appropriate for the road conditions

below the legal maximum and appropriate for the road conditions

The gasses escaping from batteries are ___. Select one: a. explosive b. corrosive c. both a and b d. neither a nor b

both explosive and corrosive

Heat exhaustion occurs when a person's body can not keep ___. Select one: a. his temperature under control b. blood flowing to his vital organs c. both a and b d. neither a nor b

both, "his temperature under control" and "blood flowing to his vital organs"

Maximum safe load limits of floors within building and structures, in pounds per square foot, shall be ___. Select one: a. recorded in the HazCom Manual b. conspicuously posted c. measured daily

conspicuously posted

Structual steal, pipes, poles,. bar stock, and other ___ materials, unless racked, shall be stacked and blocked so as to prevent spreading or tilting. Select one: a. flat b. triangular c. rectangular d. hex-shaped e. square d. cylindrical

cylindrical

Nine-lead 3Φ motors are usually internally (factory) connected as either a ___ configuration. Select one: a. series or parallel b. delta or wye c. start or stop d. torque or wound

delta or wye

When terminating UTP cables, the order of placement of the wires is ___. Select one: a. dependent upon the termination device b. not important

dependent upon the termination devices

Although a phase failure relay would be the optimal choice to protect a motor from overheating when a phase failure occurs, some motors have some protection provided by ___. Select one: a. inherent OL protectors b. properly sized OL protection in the starter c. either a or b

either a or b

The control switching for a reversing starter can consist of ___. Select one: a. a stop PB, a start PB, and a forward/reverse selector switch b. a stop PB, a forward PB, and a reverse PB c. either a or b d. neither

either a or b

Each employee required to work in ranks, ___, and similar storage areas shall be equipped with peronal fall-arrest equipment. I. hoppers II. silos Select one: a. I only b. II only c. either I or II d. neither I nor II

either hoppers or silos

A copper cable transmits __. Select one: a. photons b. electrons

electrons

Whenever materials are dropped more than 20 feet at any point lying outside the exterior walls of the building, a(n) ___ is required. Select one: a. enclosed chute b. hand truck c. dumpster d. elevator

enclosed chute

All solvent waste, oily rags, and ___ shall be kept in a fire-resistant covered containers until removed from the worksite. Select one: a. paper b. flammable liquid c. scrap wood d. all of these

flammable liquid

A dual-voltage motor was connected to a low voltage circuit. Later, the circuit was replaced with a high-voltage circuit. After the motor was reconnected to the circuit, the current through each motor winding ___. Select one: a. has not changed b. is now lower c. is now higher

has not changed

Which of these requires a 911 call for immediate medical attention? Select one: a. heat exhaustion b. heat stroke

heat stroke

Compared to crimp-on BNC coaxial cable connectors, screw-on BNC connectors permit a ___ signal loss. Select one: a. high b. lower

higher

The consistency of the twists and greater twist rate provide a __ performance when using Cat 5E and 6 compared to Cat 3 cables. Select one: a. higher b. lower

higher

When light strings are utilized on a construction site, empty sockets or sockets with shattered lamps should be replaced ___ after being reported. Select one: a. before the next work shift b. immediately c. within 72 hours d. within 24 hours

immediately

Over a period of recent years, there has been a(n) __ in the number of highway construction projects. Select one: a. decrease b. increase

increase

Death by electrocution ___ possible while working with batteries. Select one: a. is b. is not

is

A dual-voltage motor was connected to a low-voltage circuit. Later, the circuit was replaced with a high-voltage circuit. After the motor was reconnected to the circuit, the line current ___. Select one: a. has not changed b. is now lower c. is now high

is now lower

___ is the starting of a motor for short periods of time and is generally used for positioning of a driven load. Select one: a. plugging b. sequencing c. braking d. jogging

jogging

When a dual-voltage motor is connected to a high-voltage circuit, the __ current is less than it would be if connected to a low voltage circuit. Select one: a. line b. winding c. both a & b

line

Cat 3, 5E, and 6 UTP cables used for __ generally contain solid conductors. Select one: a. patch cords b. local area networks

local area networks

Storage areas shall be kept free from accumulation of ___ that constitute hazards from tripping, fire, explosion, or pest harborage. Select one: a. 5' stacks of lumber b. lunch trash c. 4' brick stacks d. all of these

lunch trash?

The OSHA regulations set the minimum lighting level for different areas on constructions sites. These levels are dependant upon the task being performed in the area. For example, ___ foot candles are required in an area used for offices than the number that would be required for storage. Select one: a. more b. less

more

Which of the following articles of clothing is acceptable to wear when working on a construction site? Select one: a. Long, straight-legged pants with cuffs b. Shorts, if made of heavy weight fabric c. Floor-length pants with extra-wide legs d. all of these e. none of these

none of these

__ are type of jewelry which can be safely worn on a job site. Select one: a. Rings b. Watches c. Bracelets d. any of these e. none of these

none of these

Cat 3, 5E, and 6 UTP cables used for ___ contain stranded conductors. Select one: a. patch cords b. local area networks

patch cords

phase unbalance in a three-phase system causes __. Select one: a. phase shifting b. overheated motors c. both a and b d. neither a nor b

phase shifting and overheated motors

The windings of 230/460-volt, dual-voltage, wye-wound motors are connected in ___ when the supply circuit is 480 volts. Select one: a. series b. parallel

series

You ___ react to any sudfden and/or unexpected movements of drivers near you. Select one: a. should b. should not

should

Lumber shall be stacked on a level surface so that the4 stack is ___. Select one: a. stable b. self-supporting c. both a and b

stable and self-supporting

Highway safety data indicated that roadway construction workers are killed at a rate nearly ___ times the rate of other forms of construction. Select one: a. twelve b. three c. twenty d. one hundred

three

A manual reversing starter requires ___ OL section(s). Select one: a. one b. two

two

When working in battery rooms, you should always work ___. Select one: a. with someone else b. alone

with someone else

Correct rotation of a 3-phase motor will always be achieved if AΦ is connected to T1, BΦ is connected to T2, and CΦ is connected to T3. Select one: a. True b. False

False

Highway construction fatalities rarely include instances of workers being struck by moving vehicles. Select one: a. True b. False

False

When the public drives past a highway construction project, these drivers pose no danger to the construction workers. Select one: a. True b. False

False

A UPS contains batteries. Select one: a. True b. False

True

___ is a type of overload relay used in a motor start. a. Melting allow b. Bimetallic c. Magnetic d. All of these

All of these