De energized Study guides, Class notes & Summaries

NFPA 10 Exam 71 Questions with Verified Answers When should wheeled fire extinguishers be considered? - CORRECT ANSWER • High hazard areas are present. • Limited available personnel are present. Requiring: High agent flow rate, Increased agent stream range, increased agent capacity NON-DOT low pressure fire extinguisher cylinders that pass a hydrostatic test shall have the following recorded on a label: - CORRECT ANSWER • Month and year test was performed (perforated) • Test pre...

When connecting a 3-phase motor the three lines (T1,T2 and T3) are usually connected to __________. - L1, L2, and L3 Electricians use __________ to prevent damage to electrical wiring running to the machine. - rigid and flexible conduit When the wire or foil strip inside a fuse melts, the fuse is said to be __________. - blown The difference between a fuse and a circuit breaker is __________. - circuit breakers can be reset and used again The amount two electrical...

AMT 2 study guide exam 2024/2025 Amtrak Conductors and Engineer are classified as class ______ employees - CORRECT ANSWER-C. [1.103] Should employees in electrified territory be familiar with the location and operation of radios and telephones? - CORRECT ANSWER-Yes [1.204] When using railroad telephone lines or radios, and you hear the word "EMERGENCY" repeated three times, what must be done? - CORRECT ANSWER-All others using the phone line or radio channel must yield immediately. [1...

Amtrak Conductors and Engineer are classified as class ______ employees - C. [1.103] Should employees in electrified territory be familiar with the location and operation of radios and telephones? - Yes [1.204] When using railroad telephone lines or radios, and you hear the word "EMERGENCY" repeated three times, what must be done? - All others using the phone line or radio channel must yield immediately. [1.205] All occurrences or conditions which are likely to affect electric Operations...

NCCCO/ CCO Crane Exams BUNDLED TOGETHER (Latest 2023/ 2024 Update) Questions and 100% Correct Verified Answers| Grade A Q: Side loading may be caused by: Answer: Starting and stopping the swing rapidly Q: What is the best procedure to follow when underground utilities may be present? Answer: Contact local utility company Q: eccentric main boom tip reeving causes: Answer: Twisting of the boom Q: How many randomly broken wires in one lay, must there be t...

True or False: A mandatory rule can have exceptions. False True or False: Permissive rules are allowed but not required to be performed true What does NEC stand for? National Electrical Code What do chapters 1-4 of the NEC cover General electric installations What do chapters 5-7 of the NEC cover Special equipment and loctations What does chapter 8 of the NEC cover Communication systems What does chapter 9 of the NEC cover tables What is an...

1. What action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up? a. Boom down b. Swing c. Boom up d. Extend boom - Answer c. 2. When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? a. 1% b. 2% c. 5% d. 8% - Answer a. 3. The load line of the crane you're operating contacts ...

Seeding of BOD samples is necessary when samples - (All of the above) have a chlorine residual, have a previously been chlorinated, have been subjected to high temperatures, contain high or low pH industrial wastes When is blue-green algae the most dominant on a pond treatment system? - Summer A 30-inch diameter wastewater interceptor is observed to be flowing half-full at about two fps. The approximate volume of wastewater flowing through the pipe is 3.14x1.25 x 1.25 x 2 = 4.9 cfs x 449 =...

under strict safety guidelines, which of the following should be used to discharge capacitors before working on de-energized circuits. - safety shorting probe for safety, assume that any facility constructed before 1980 has? - asbestos with of the following is the threshold at which a power source is considered high voltage in the context of safety? - over 600V- 600Volts insulated gloves must be inspected by the user? - always and field checked the normal beating of a heart can be upset by...

Boom up What action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up? 1% When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? Stay in the cab until the lines are de-energized The load line of the crane you're operating contacts an energized power line. There's no sign of any ot...

Seeding of BOD samples is necessary when samples - Correct Answer (All of the above) have a chlorine residual, have a previously been chlorinated, have been subjected to high temperatures, contain high or low pH industrial wastes When is blue-green algae the most dominant on a pond treatment system? - Correct Answer Summer A 30-inch diameter wastewater interceptor is observed to be flowing half-full at about two fps. The approximate volume of wastewater flowing through the pipe is 3.14x1.2...