Papersbylee

The ordinary direct current series motor does not operate satisfactorily with alternating current. One of the main reasons for this is a. excessive heating due to eddy currents in the solid parts of the field structure b. that the armature current and field current are out of phase with each other c. that the field flux lags 120 in time phase with respect to the line voltage d. excessive heating due to the low voltage drop in the series field - ANSWERa. excessive heating due to eddy curre...

1. Disregarding exceptions, dry-type transformers located indoors having a rating of greater than _____ shall be installed in a transformer room of fire-resistant construction. A. 75 KVA B. 87 1/2 KVA C. 112 1/2 KVA D. 50 KVA - ANSWERC- 112 1/2 KVA 450.21(B) pg 335 2. What is the MINIMUM height allowed for a fence enclosing an outdoor installation of 2,400 volt electrical equipment? A. 6 feet B. 7 feet C. 8 feet D. 9 feet - ANSWERB - 60 7 feet 110.31 pg 49 3. Where power for ...

How to calculate breaker size in motors. - ANSWERMultiply FLA by percentage using Table 430.52 How to find wire size in an motor. - ANSWERMultiply FLa by continuous load of 125% then size ampere rating using Table310.16 How to find OCPD in motors - ANSWERMultiply nameplate rating by service factor listed in 430.32 How to find feeder breaker size in motor ? - ANSWERAdd the highest breaker size to the FLA of the remaining motors. How to find the feeder conductor size ? - ANSWERMultiply the FLC...

A 120 volt road sign has #6 copper THWN conductors in a 2" PVC conduit. The sign pulls 8 amps and is on a 30 amp breaker. what is the longest distance that the sign can be located from the sub-panel and still be legal? Use k = 12.9 a. 100-200 feet b. 201-300 feet c. 301-400 feet d 401-500 feet - ANSWERd. 401-500 A 175 KVA, single phase transformer having a primary voltage of 240 and a secondary voltage of 120 has been installed at a multi-family dwelling. The current available at the p...

If two 10-ohm resistors are connected in series, what is the total resistance of these resistors? - ANSWER20 ohms In a split-phase motor, how much greater is the starting current when compared to the full-load current? - ANSWER6 to 8 times The terminals of a motor can be identified using a battery and a ___ - ANSWERvoltmeter A 5-ohm and a 20-ohm resistor are connected in parallel. What is the total resistance of these two resistors? - ANSWER4 ohms The normal location to provide overcurrent p...

At carnivals and fairs, service equipment shall not be installed in a location that is accessible to unqualified persons, UNLESS the equipment ____. A. has a voltage to ground of not more than 125 volts B. is provided with GFCI protection C. is lockable D. is installed at a height of more than 6 feet - ANSWERC. is lockable pg. 463 Where the NEC specifies that one equipment shall be "within sight from" or "within sight of" another equipment, the specified equipment is to be vi...

Recommended basic types of feedback - ANSWERCorrective, confirmatory, motivating A decisive leader is - ANSWERConfident and effective Which of the following is a leadership process competency? (-a. Character, -b. Credibility, -c. Confidence, -d. Cooperation) - ANSWERCharacter Which of the following is not a step in the 6-step Decision-Making process to decisive decision making? (-a. Provide feedback, -b. Implement the decision, -c. Collect internal and external opinions , -d. Pre-plan strateg...

Well-blasted rock has a swell percentage of: (Principles and Practices of Commercial Construction --> Earthwork) - ANSWER20% Lifelines in areas subjected to cutting or abrasion shall be a minimum of ______ inch wire core manila rope (OSHA) - ANSWER7/8 All excavations made in Type B soil 20 feet or less in depth which have vertically sided lower portions shall be shielded or supported to a height _____ inches above the top of the vertical side (OSHA) - ANSWERAt least 18 inches The calcul...

Web accessibility laws tend to fit into what law categories? - ANSWERCivil rights laws, Procurement laws, Industry-specific laws What are civil rights laws? - ANSWERThese are laws that emphasize equal rights for people with disabilities, often making it illegal to discriminate against people with disabilities under certain defined conditions, such as employment, access to buildings, government services, or "places of public accommodation" such as restaurants, retail, entertainment, etc. S...

How do you Secure Shell into another system? - ANSWERssh <user>@<host> How do you execute commands on a remote system via Secure Shell without actually opening a new shell? - ANSWERssh <user>@<host> <command> How do you generate a public key and private key file for SSH authentication? - ANSWERssh-keygen How do you export a public key for SSH authentication on a different machine? - ANSWERssh-copy-id <user>@<host> How do you export a *specific* publi...