Electrical test #2

The following reaction best describes a current of ____ milliamps slight shock felt not painful but disturbing, average individual can Let go, strong involuntary reactions can lead to other injuries

5

What safety label is used to indicate an immediate hazardous situation ?

Danger

What is the correct formula for calculating total voltage in a series circuit?

E1+E2= E3

True or false... a no contact voltage indicator is one of the most dangerous types of testers to use to determine if an AC circuit is energize

False

True or false... a painted wooden ladder is considered a safe condition in the electrical trade?

False

True or false... a test device needs to be checked on a known live circuit, before using it on a questionable circuit. there is no need to check both before and after.

False

True or false... generally it is not desirable to D energize equipment or circuits before working on them

False

True or false... it is clear to most people who have worked in the construction trades that a dirty job site normally indicates a productive job site.

False

True or false... electrical equipment noted in the assured equipment grounding conductor program must be visually inspected for damage or defects weekly.

False, daily

Adjustable wrenches to be pulled so that the force is on the side of the ____ jaw.

Fixed

The kilogram is a unit for measure _____ in the metric system.

Mass

When connecting batteries in a series, the positive terminal of one batteries connected to the _______ terminal of another battery

Negative

True or False... A GFCI will not protect equipment or personnel from line to line contact hazards.

True

True or False... It is the responsibility of each worker on the job to be the final judge of safety.

True

True or False... The maximum thickness of fastened material for a bolt is the length of the threads minus the first 3 threads.

True

True or False... an analog meter is more susceptible to shock damage from dropping than a digital meter

True

True or false the life expectancy of a test instrument could be extended by using it correctly.

True

True or false... manual range mode of a digital meter will help to eliminate picking up ghost voltages caused by electromagnetic interference

True

True or false... the safety requirements for US worker place to threshold voltage of electrical shock at 50 volts AC or Dc

True

What is the smallest size fuse that will prevent the circuit shown from drawing more than it's rated currents. Es= 120v, all resistors are 15 ohms.

120/60= 2 amps

What is the indicated voltage on a digital meter with a reading of 127 and the selector switch in the 1000 dcv position?

127 volts

What symbol does the figure below represents?

3 way switch

What is the maximum recommended length for a single section ladder?

30 feet

If you have 2 resistors in a series with a 120v source and you are reading 4 amps on an ammeter place before both resistors l, what is your total resistance?

30 ohms (E/I)

Bonding friction and keying are the working principles by which a _____ develops it's holding power in Concrete.

Anchor

What type of device will intercept the flow of current with as little as 1/40 of a second to prevent electrocution

GFCI

OSHA rules and regulation two options in regard to providing ground fault protection's to a worksite.

GFCI and Assured equipment grounding conductor program

Which item must be considered when selecting an appropriate fastener to use when anchoring to building steel?

Grade of Steel

Concrete which has cured for less than 28 days is referred to as _______ concrete

Green

If a hotwire contacts a grounded enclosure a ______ to ______ results.

Ground - fault

Dry skin has a fairly ______ resistance to an electric current.

High

As the current through a series circuit increases the total power dissipates in each component... increases or decrease

Increases

What should be lay down or lashed so they cannot fall or be blown down?

Ladders

What symbol is this

Light fixture

To protect electrical workers from electrical shock, NFPA 70e establishes three different shock protection boundaries.

Limited approach boundary restricted approach boundary prohibited approach boundary

What is a valid equation for finding the total power consumed in a circuit?

P= E^2 / R

Which of the following is a preferred combination of test for live conductors in a power panel

Phase to phase phase to ground

What type of resistor

Tapped resistor