Series 150 amps 2 - Study guides, Class notes & Summaries

Electrical 2 module 1 Exam Questions And Correct Answers The hertz rating of a ac circuit is __ if the frequency is 20 cycles per 1/2 second - answer40 hertz A circuit has an rms voltage of 120vac, the peak voltage is? - answer170v The turns ratio of a transformer with 200 turns into primary and 100 turns in the secondary is __ - answer2:1 Opening the secondary of a CT (current transformer) underload will cause? - answerDangerously high voltages A circuit has a peak voltage of 275 V the...

CSLB B GENERAL QUESTIONS AND ANSWRERS 100% PASS PTICH rise/span what size of a circuit breaker can be installed on a line with 7 outlets 14 AWG wire? 15 amp; according to code, the conductor ampacity rating for a 14 gauge wire is 15 amps. for 12 gauges wire is 20 amps. the number of outlets does not determine the size of circuit breaker. how many roof squares are in the roof measuring 45' by 50'? 22.5; (45x50) / 100 (roofing squares made of 10'x10'). total drop for a 120' pipe with a 2% ...

A contractor wants to raise the car speed from 100 fpm to 125 fpm, it currently has a 12" sheave. What is required? - ANS 100 fpm/125 fpm= 12"/ X =15 A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance. What should you do? - ANS Replace it with a larger MOV - 630 On a Ward-Leonard circuit the brake is set, but the motor is trying to slip through the brake. What is the issue? - ANS Suicide Circuit - 425 You have an old DC motor and are ad...

What is the voltage found at the TT terminals - ANS 24 volts What are the 8 steps of a no heat call - ANS 1 talk to customer 2 check tt.3 check to make sure an emergency switch is on 4check to make sure there is oil in the tank 5 check to make sure the main power going to the unit is on six check to make sure that tank shut off valve is open 7 know whether the tank is located above or below the burner I know the type and style of the system that is being used on a one or two pipe system ...

Its a box with shaded triangle in lower right hand corner. Which relay do you need to Order 710 Pg, 7 RPM = 60 ∙ ƒ ÷ P÷2 = Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 = Take answer 1 and ÷ by answer 2 = Know the formula for RPM 435 Pg. 5 If you are referring to a megohm meter, it is a test of the insulation properties of such things as electric wiring, motor windings and high power antenna mounts. We use a "megger" or "meg out" electrical wiring and eq...

MECHANICS EXAM NEIEP (2024/2025) QUESTIONS WITH VERIFIED CORRECT ANSWERS || 100% GUARANTEED PASS <UPDATED VERSION> The period of a sine wave is .0083 seconds. What is the frequency? - ANSWER 120 Hz f= 1/t With an effective value of 20.2 amps of AC current, what is the peak value - ANSWER 28.6 A waveform that has unequal rise and fall times with one being instantaneous is called a - ANSWER Sawtooth Like Magnetic Poles - ANSWER Repel Total Resistance is... - ANSWER a...

A Latching relay: Used for call registration,direction selection or as selector relays Two types are: Set/Rest are electrical and Mechanical Latching relays Need to know latching relay symbol, Its a box with shaded triangle in lower right hand corner. Which relay do you need to Order 710 Pg, 7 RPM = 60 ∙ ƒ ÷ P÷2 = Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 = Take answer 1 and ÷ by answer 2 = Know the formula for RPM 435 Pg. 5 If you are referring to a mego...

Lineman Apprentice Test The difference in a 3 wire & 4 wire distribution circuit is? - Answer- the Neutral wire What is the formula for power - Answer- P=VxI Transmission voltage is generally _________ to _________. - Answer- 138,000 to 765,000 volts If the diameter of the pole to be set is 10", the diameter of the hole should be ____ to allow sufficient room for tamping. - Answer- 16", 3" on each side of the pole What are the component parts of a distribution system? - Answer-...

oxidation loss of electrons, positive charge atoms (anode) reduction gain of electrons, negative charged atoms (cathode) forms of corrosion uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Carbonates/bicarbonates) ...

candela - ANSWERS brightness of a fixture as observed at the retina of the observers eye flood lights - ANSWERS What was the fist type of airfield lighting used. Boundary lights - ANSWERS What was the first type of SIGNAL lights used. Transmissometer - ANSWERS A photoelectric system that provides an exact measurement (distance) of visibility. (RVR) ICAO Annex 14 - ANSWERS The basic document that has defined for the world the various types of lighting required and the photometric req...