Nstm 300

Front 1

At what mA is a person unable to let go?

Back 1

10mA

Front 2

Human body resistance is typically

Back 2

500 ohms

Front 3

When skin is damp, body resistance can be as low as

Back 3

300 ohms

Front 4

What mA is when shock is felt

Back 4

1 mA

Front 5

What is the max air pressure used to clean motors and generators?

Back 5

30 psi

Front 6

Do not join extension cords longer than

Back 6

25 ft

Front 7

Never join no more than-----extension cords?

Back 7

2

Front 8

-----extension cords may be used in tandem if ------ft is insufficient.

Back 8

2

25ft

Front 9

Work on energized systems 1000v or higher is prohibited unless approved by

Back 9

NAVSEA

Front 10

Red gloves are rated for

Back 10

1000v

Front 11

White gloves are rated for

Back 11

7500v

Front 12

Yellow gloves are rated for

Back 12

17,000v

Front 13

Green gloves are rated for

Back 13

26,500v

Front 14

Active ground detectors apply ---- voltage between an operating power system and ground.

Back 14

DC

Front 15

Active ground detectors apply ---- voltage between an operating power system and ground.

Back 15

DC

Front 16

A passive ground detector consists of

Back 16

Lights or voltmeter

Front 17

Extension cords do not exceed 25 ft in length with exception of the

Back 17

Repair locker

Front 18

-----is an electronic passive device which is used in order to suppress conducted interference that is present on a signal or power line.

Back 18

EMI filter, electromagnetic interference.

Front 19

What are EMI filters composed of and how are they connected?

Back 19

Capacitors connected from conductors to ground.

Front 20

-------,system provides a limited amount of current when one phase is faulted to ground and thus allows critical equipment to continue operation until steps can be taken to remove the fault.

Back 20

Ungrounded.

Front 21

When the electrical system neutral or phase conductor are not intentionally connected to ground (except through potential measuring devices or other very high impedance devices. The system is to be -----------.

Back 21

Ungrounded

Front 22

The effective resistance of an electrical circuit or component to Alternating current arising from the combined effects of ohmic resistance and reactance.

Back 22

Impedance

Front 23

Intentionally connects the non-current-carrying conductive parts of electrical equipment such as enclosing, frame, or, chassis to ground (ships hull)

Back 23

Equipment ground

Front 24

The resistance ground should be less than

Back 24

.1 ohms

Front 25

F60C 500v 5A S

What does the "S" stand for?

Back 25

Silver plated

Front 26

Never replace a fuse with a ----- current rating.

Back 26

Higher

Front 27

Fatalities have occurred from circuits with voltage as low as------?

Back 27

30v

Front 28

How hot is a ARC Flash?

Back 28

35,000•F

Front 29

What mA is fatal?

Back 29

100 mA

Front 30

Removable fuse holders should be covered with------

Back 30

Insulated fuse plugs.

Front 31

Electrical safety checks of personal electrical and electronic equipment are not required. True or false

Back 31

True

Front 32

Single hearing protection is required for

Back 32

84 continuous

140 impact

Front 33

When double hearing is required?

Back 33

105 dba continuos

Front 34

When equipment has been splashed with saltwater, cleaning with ---- to remove salt.

Back 34

Fresh water