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fotp chevron > ESWP and Basic Electricity > Flashcards

ESWP and Basic Electricity Flashcards

1
Q

What would you call an employee/person whose job requires him/her to operate or use a machine or equipment on which servicing, or maintenance is being performed under lockout/tagout or requires him/her to work in an area in which such servicing or maintenance is being performed?

a. Effected Employee (EE)
b. Authorized Person
c. Affected Employee
d. Unaffected Person

A

c. Affected Employee

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2
Q

Distance from a prospective arc source within which a person could receive a (1.2 calorie) second degree burn to bare skin if an electrical arc flash were to occur?

a. Arc Flash Protection Boundary
b. Restricted Distance
c. Danger Zone
d. Electrical Zone

A

a. Arc Flash Protection Boundary

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3
Q

What term describes being capable of being inadvertently touched or approached nearer than a safe distance by a person?

a. Vulnerable
b. Guarded
c. Grounded
d. Exposed

A

d. Exposed

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4
Q

(True/False) The only breakers operations personnel are authorized to open or operate are those which have a label identifying them as 480-volt Motor Control Center (MCC) breakers.

A

True

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5
Q

The movement of charged particles, such as the discharge of static electricity, is known as ______.

a. voltage
b. current
c. resistance
d. shock

A

b. current

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6
Q

All ______ _______ involve a potential difference, current, resistance, and load.

a. electrical circuits
b. energy sources
c. loads
d. watts

A

a. electrical circuits

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7
Q

120 volts and below is considered _______.

a. high voltage
b. low voltage
c. medium voltage
d. intermediate voltage

A

b. low voltage

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8
Q

_______ distribution points are 4160-volt power lines distribute current either below or above ground to large motors in the plant and to motor control centers/load centers.

a. Low voltage
b. Medium voltage
c. High voltage
d. Load center

A

a. high voltage

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9
Q

What is considered medium voltage?

a. 12,000 volts
b. 480 volts
c. 120 volts
d. 9 volts

A

b. 480 volts

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10
Q

The stationary structure in a generator is the _____.

a. rotor
b. armature
c. drive shaft
d. stator

A

d. stator

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11
Q

The rotating structure in a generator is the _____.

a. rotor
b. armature
c. drive shaft
d. stator

A

a. rotor

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12
Q

What is the device that transfers AC electrical energy from one circuit to another at a different voltage?

a. transducer
b. transformer
c. circuit breaker
d. relay

A

b. transformer

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13
Q

_____ are electric switching devices made up of one or more contacts that open or close circuits.

a. transducer
b. transformer
c. circuit breaker
d. relay

A

d. relay

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14
Q

A _____ ______ is another protective device that is often located adjacent to the equipment motor in the plant. It enables the operator to deenergize the power circuit at the piece of equipment. Can be a switch or lever.

a. electric motor
b. field disconnect
c. load center

A

b. field disconnect

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15
Q

The rotating magnetic field in an electric motor is called the ______.

a. rotor
b. stator
c. armature
d. commutator

A

b. stator

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16
Q

The ______ ______ ______ is created by passing DC current from the DC source through the bushes and commutator and into the armature coils.

a. armature magnetic field
b. basic electrical training
c. personal protective equipment

A

a. armature magnetic field

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17
Q

What are the 2 main categories of AC motors?

a. AC & DC
b. weather protected & weather proof
c. open and closed
d. synchronous & induction

A

d. synchronous & induction

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18
Q

What enclosure for electric motors is appropriate for dirty, wet, contaminated, or hazardous areas?

a. weather protected
b. spash proof
c. semi enclosed
d. totally enclosed

A

d. totally enclosed

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19
Q

Defined as a study investigating a
worker’s potential exposure to arc
flash energy, conducted for the
purpose of injury prevention and the
determination of safe work practices,
arc flash protection boundary, and
the appropriate levels of PPE that
identifies the following:

a. Affected Employee
b. Flash Protection Boundary
c. Electrical Hazard Investigation (EHI)
d. Arc Flash Hazard Analysis

A

d. Arc Flash Hazard Analysis

20
Q

When an arc flash hazard exists, an
approach limit at a distance from a
prospective arc source within which a
person could receive a second
degree burn if an electrical arc flash
were to occur.

a. Affected Employee
b. Arc Flash Protection Boundary
c. Electrical Hazard Investigation (EHI)
d. Arc Flash Hazard Analysis

A

b. Arc Flash Protection Boundary

21
Q

(True or False)

Always test before touching.
Electrical equipment, power
lines, cables, and other
devices shall be considered
energized until they are put
in an electrically safe work
condition, i.e., de energized,
tested, locked and/or tagged
out, and grounded (when
required).

A

True

22
Q

True or False
Operations are Trained to open 480V MCC breakers, hang lock (unlocked) and tag in preparation for
I&E Maintenance inspection

A

True

23
Q

True or False
Operations are Trained to close 480V MCC breakers from the open position.

A

True

24
Q

True or False

Operations are Trained to operate electrical equipment from controls normally reserved for operations (start/stop buttons, field control panels, etc.)

A

True

25
Q

Work Near Insulated Cables
Which of the following is true when working near insulated cables?

a. Performed within 10 feet of insulated,
energized conductors

b. Cable potentially can be damaged by
the work being performed, then the
conductors shall be suitably guarded

c. If guarding is not possible, practicable,
or presents a greater hazard then an
Energized Electrical Work Permit shall
be required.

d. Old or fragile cables shall not be moved
while energized.

e. Energized insulated cables can be touched when using leather gloves

f. All of the above

A

a. Performed within 10 feet of insulated,
energized conductors

b. Cable potentially can be damaged by
the work being performed, then the
conductors shall be suitably guarded

c. If guarding is not possible, practicable,
or presents a greater hazard then an
Energized Electrical Work Permit shall
be required.

d. Old or fragile cables shall not be moved
while energized.

26
Q

Uninsulated (non–electrical) mobile equipment (e.g., cranes, man lifts, fork electrical) mobile equipment (e.g., cranes, man lifts, fork
trucks, mobile scaffolds, dump trucks, cement pumpers, etc.) must remain a
minimum distance of _____ feet from exposed overhead conductors when working.
Refer to Refinery Instruction 834 Crane Use, Lifting and Rigging for more
information and clarification.

a. 10 feet
b. 20 feet
c. 30 feet
d. 6 feet

A

b. 20 feet

27
Q

The limited approach boundary varies, but for
voltages up to 72.5kV _____ feet is a safe limited
approach boundary.

a. 10 feet
b. 20 feet
c. 30 feet
d. 6 feet

A

a. 10 feet

28
Q

Approach limit at a distance from an exposed, energized electrical conductor or
circuit part within a shock hazard exists.

a. Limited Approach Boundary
b. Arc Flash Boundary
c. Flash Protection Boundary
d. Shock Boundary

A

a. Limited Approach Boundary

29
Q

True or False
Operations can sign cut-line tape used to mark the cut location on a cable.

A

False

30
Q

How long are copies of energized Electrical Work Permits kept at the unit and then sent to central records?

a. 90 days
b. 1 year
c. 1 month
d. 6 weeks

A

c. 1 month

31
Q

______ is a basic property of all matter and is dependent on its atomic structure.

a. electric potential
b. electric field
c. conductivity
d. electric charge

A

Electric charge

32
Q

What is the the measure of how easily the charged particles can pass through materials?

a. electric charge
b. insulators
c. current
d. conductivity

A

d. conductivity

33
Q

______ are used to prevent the flow of charged particles between conductors.

a. insulators
b. conductors
c. load centers
d. transformers

A

a. insulators

34
Q

What is the space around a charged object in which the influence of the charge is felt?

a. current
b. insulator
c. electric field
d. electric charge

A

c. electric field

35
Q

How is electrical resistance measured?

a. voltage
b. watts
c. ohms
d. kilovolts

A

c. ohms

36
Q

_____ are sets of two or more electric conductors that act as common connections between load circuits.

a. buses
b. relays
c. generators
d. capacitors

A

a. buses

37
Q

The ___________ is created by passing DC current from the DC source through the bushes and commutator and into the armature coils.

a. field disconnect
b. armature magnetic field

A

b. armature magnetic field

38
Q

True or False
Portable and vehicle mounted generators must have a connection to ground.

A

True

39
Q

True or False
For vehicle mounted generators, the frame of the generator must be bonded to the frame on the vehicle.

A

True

40
Q

What is the unit that measures the potential difference?

a. Watt
b. OHM
c. Volt
d. Fariday Principal

A

c. volt

41
Q

True or False
High Voltage Distribution power lines distribute current either below or above ground to large motors in the plant and to the motor control centers/loaders

A

True

42
Q

Generators and cogenerators use ______ to produce electricity energy

a. mechanical energy
b. electric energy

A

a. mechanical energy

43
Q

True or False
AC Motors move in only 1 direction

A

False. They change direction periodically

44
Q

True or False
DC motors move in only 1 direction

A

True

45
Q

True or False
A MCC (motor control center) is literally a center for controlling the electric power supply to the 480volt monitors in the plant

A

True

46
Q

_______ is a machine that converts electric energy into mechanical energy to do work.

a. generator
b. electric motor

A

b. Electric motor

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