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3 6 M > T 205: E P Safety > Flashcards

T 205: E P Safety Flashcards

1
Q

If a person is a victim of electric shock, your immediate action should be to

  • begin ventricular fibrillation
  • determine the amount of current they were exposed to
  • ensure that breathing and circulation are maintained
  • make them as comfortable as possible
A

Ensure that breathing and circulation are maintained

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2
Q

The NEC defines a qualified person as someone who

  • can perform multiple tasks in a plant
  • has been on the job at least ten years
  • is familiar with equipment operation and hazards
  • is trained in CPR and first aid
A

is familiar with equipment operation and hazards

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3
Q

when working around electricity, you should never wear

  • an ANSI class G or E hard hat
  • clothing made of polyester
  • insulating gloves
  • rubber-soled shoes
A

Clothing made of plyester

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4
Q

In all circuits, the size of the wire used depends on the amount of _______ the circuit must carry, not the amount of voltage

A

Current

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5
Q

Most fatal electric shocks occur when the current path passes through or near the _____

A

Heart

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6
Q

Several organizations have established procedures or standards for working with or near electrical equipment. Which set of standards is enforceable under US law?

  • IEC
  • ISO
  • NEC
  • OSHA
A

OSHA

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7
Q

All electrical equipment should meet the requirements of a recognized ____ such as FM or UL.

  • local authority
  • national trade group
  • standards organization
  • testing laboratory
A

Testing Laboratory

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8
Q

Which kind of electrical equipment cannot cause an explosion or fire of specific hazardous materials, because it can only release low levels of electricity?
• Industry approved
• Intrinsically safe
• NEMA listed
• UL tested

A

Intrinsically safe

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9
Q

To guard against electric shock, you should wear _______ gloves (for insulation) under _______ gloves (for protection)
• cotton; canvas
• cotton; leather
• rubber, leather
• rubber, steel mesh

A

Rubber; leather

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10
Q

If a chemical comes in contact with your eyes, your immediate action should be to

• apply a neutralizer

• bandage the eyes

• go to the plant medical department
•.rinse thoroughly

A

Rinse thoroughly

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11
Q

If several workers are working on a single piece of equipment, they should
• assign one person to guard the power source
O decide which one of them will be responsible for lockout
• each apply a lock to the power source
• obtain a master key to simplify lock removal

A

Each apply a lock to the power source

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12
Q

The barricade tape used to keep personnel out of an area where hazardous electrical work is being performed should be
• a maximum of 2 in. wide
• applied to the floor to mark off the area
• displayed at a readily visible level
• green or white in color

A

Displayed at a readily visible level

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13
Q

What tool is intended to be used to verify that a circuit has been de-energized?
• Hot stick
• Insulated screwdriver
• Voltage tester
• Voltmeter

A

Voltage tester

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14
Q

Which of the following is the best clothing choice when working with electricity?
• Heavy-weight cotton
Light-colored rayon
Loose-fitting nylon
• Short-sleeved polyester

A

Heavy weight cotton

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15
Q

Prescription glasses worn in an industrial setting must be ANSI approved. Safety goggles must be worn in all plants.
• Both statements are false
• Both statements are true
• Only the first statement is true
• Only the second statement is true

A

Only the first statement is true

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16
Q

OSHA requires that ______ prepare a written protection program for respirators if they are used in a facility.
- contracted workers
• employees
• employers
- local government

A

Employers

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17
Q

In most plants, disconnects should be locked out and tagged out. A locked and tagged out disconnect would be in the _____ position.
• mid travel
• neutral (non threatening)
• off|
• on.

A

Off

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18
Q

A hot stick that is used to manipulate electrical conductors from a distance is usually made from
- fiberglass
- metal
• plexiglass
• wood

A

Fiberglass

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19
Q

The first step in locking out power to a piece of equipment is to
• attach a tag to the circuit breaker
• notify the operator
• place a lock on the disconnect switch
• tum off electric power

A

Notify the operator

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20
Q

If a shock victim appears to be uninjured and feeling fine, you should
• begin emergency CPR
• call for prompt medical assistance
• encourage them to return to work
• observe them for several hours

A

Call for prompt medical assistance

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21
Q

If a victim of electric shock is unconscious, you should
• begin CPR immediately
• check for breathing and a pulse
• move him to a cool location
• try to get him to drink something

A

Check for breathing and a pulse

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22
Q

In the past, it was not uncommon to simply de-energized equipment electrically before working on it. In today’s workplace, you should _________ the main electrical disconnect

• isolate
• lock out
O pull down
• shut off

A

Lock out

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23
Q

Once power is locked out, you should _______ working on the equipment
• remove protective equipment before
- remove your lock when
- test the circuit before
◎ use non-insulated tools when

A

Test the circuit before

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24
Q

What kind of switch is designed to automatically cut off an electric tool’s power when the pressure of the operator’s finger is removed?
• Deadman
• Double insulated
O GFCI
• Overriding

A

Deadman

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25
If you encounter a victim in contact with a live conductor, shut off the electricity or move the victim away from the conductor with a ________ object. • damp • metal • nonconductive • small
Non conductive
26
Information on branch circuits, grounding, and overcurrent protection can be found in NEC chapter ?
2
27
Article 430, the most widely used part of NEC Chapter 4, deals with ______ installation requirements. - communication systems - electric sign - motor - photovoltaic system
Motor
28
NEC Article 760 covers the special installation requirements of - communication systems - fire alarms - fuel pumps - swimming pools
Fire alarms
29
Informational Notes in the NEC are intended to: - direct you to other references - point you to alternative calculations - provide additional information - all of the above
All of the above
30
The purpose of NEC Article 100 is to: - assist electricians in calculating electrical loads - familiarize electricians with special locations - give lighting installation instructions to reduce the risk of fire - reduce misunderstanding by providing definitions
Reduce misunderstandings by providing definitions
31
Table 8, located in Chapter 9 of the NEC, is commonly used in ________ calculations. - conduit-fill - feeder-size - voltage-drop - working-space
Voltage-Drop
32
To evaluate receptacle wiring and grounding quickly, use a - ground fault circuit interrupter - grounding structure - megohmmeter - receptacle tester
receptacle tester
33
A GFCI opens a circuit when it detects - an improperly grounded receptacle - different currents in the conductors of a circuit - insulation failure in a conductor - large amounts of current in a conductor
Different currents in the conductors of a circuit
34
Static electricity is commonly generated by:
Friction between two surfaces
35
A Class C fire extinguisher is intended to use on what kind of fire?
Energized electrical equipment
36
What kind of fuse is designed mainly to protect motors circuits?
Dual element
37
According to the NEC rules, plug fuses cannot be used in circuit exceeding _____ volts between conductors.
125
38
In an ambient-compensation circuit breaker a(n) __________ compensates for change in ambient temperature.
Bimetallic strip
39
The most important consideration in selecting a molded-case circuit breaker is...
Potential difference
40
Which of the following is the best course of action to take after a circuit breaker trips?
Determine what caused it to trip
41
If more than one motor is connected to a feeder protecting device, the rating of the device is determined by adding the highest current required for a single motor to the ______ of all the other motors.
Full load current rating
42
The motor running overturn protected device on a motor is usually an...
Overload relay
43
What kind of temperature device consists of a calibrated wire enclosed in a protective shield?
Resistance
44
Single phase in a three phase motor occurs when...
It continues running after one phase is lost
45
The NEC defined a qualified person as a person that is:
familiar with equipment operations and hazards
46
The effect of current on the human body depends on the three main factors: The amount of current, the length of time the body contacts, and ___________.
The path of the current through the body.
47
A tool's grounding wire carries current....
When a ground fault occurs
48
Which of the following would be covered by the NEC?
Public Schools
49
Shaded text in the NEC and NEC handbook indicated that the information....
has changed since the previous edition
50
If you must use a portable power tool, but only a two slot receptacle is available, you should
Use a two wire double insulated tool
51
When a piece of equipment is in a zero energy state that means that it....
Cannot be activated accidentally
52
To ensure satisfactory operation, a GFCI must be pushbutton tested...
regularly
53
One disadvantage of line fuses?
They only act under the condition of excess current.
54
What kind of electricity involves electric charges that remain unmoving on an object?
Static
55
The most common method of preventing the accumulation of static electricity is?
Grounding?
56
Fuses and circuit breakers are examples of ________ protective devices.
Overcurrent
57
Dual-element fuses were designed mainly for ________ circuit protection.
Motor
58
Class J, L, G, or K are classifications of industrial _______ fuses.
Cartridge
59
The operation of some circuit breakers is accomplished by magnetic action, while in others it is a combination of magnetic action and ______.
Thermal release
60
NEC 430.37 requires that an overload relay protect _______ phase(s) of the 3 phase motor.
All
61
The feeder rating for a motor circuit with 2 or more motors is _____% of the full-load current of the largest motor, plus the full-load current of the remaining motors
125
62
A portion of the wiring system that extends from the final overcurrent device to the outlet is called a _______ circuit.
Branch
63
Thermal overload relays are used with contactors to control what type of electrical device?
Motors

3 6 M (8 decks)

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