Counterweight - Study guides, Class notes & Summaries

Zener current will decrease - ANSWER-Refer to figure 1. If the load resistance R2 is reduced by half what happens what happens to zener diode? 4v - ANSWER-Refer to figure 1. The zener diode is designed to breakdown at 6VDC what is the voltage drop across R1 with a constant DC supply of 10VDC 30 rpm - ANSWER-An elevators motor rotates at 1200 rpm at contract speed and is geard at a ratio of 40:1. If the motor turns 40 rpm the sheave turns 1 rpm. What is the actual speed of the drive sheave ...

NCCCO Tower Crane Questions and Answers Rated A+ What is the primary function of a tower crane? The primary function of a tower crane is to lift and move heavy materials vertically and horizontally on construction sites. How does a tower crane achieve its height? A tower crane achieves its height through a system of climbing that allows it to add additional sections as the building height increases. What is the role of the operator in a tower crane operation? The operator is ...

ASME - Answer-American Society of Mechanical Engineers DOSH - Answer-Division of Occupational Safety and Health LADBS - Answer-Los Angeles Department of Building and Safety Alteration made to conveyance shall comply with ASME A17.1-204 Section - Answer-8.7 The seismic section of ASME A17.1-2004 and alterations made to conveyances must also comply with this section - Answer-8.4 What must be submitted to the applicable Division Elevator office prior to beginning construction or alterations ...

ELEVATOR MECHANIC 2025 UPDATE EXAM GRADED A+ What should be done about the public when escalator maintenance or repair is being performed? - ANSWER-The public should be completely barricaded from the area A dumbwaiter below 500 lbs capacity shall have a clearance of what between car and counterweight? - ANSWER-0.5 inches A dumbwaiter capacity shall not exceed how many pounds? (Ref: Material handling devices) Title 8 Sec 3009 - ANSWER-500 pounds A dumbwaiter platform area shall not exceed h...

Elevator Mechanic Exam Review Exam | Questions and Answers Graded A+ Latest 2024/2025 Know the formula for RPM - CORRECT ANSWER RPM = 60 ∙ ƒ ÷ P÷2 = Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 = Take answer 1 and ÷ by answer 2 = You are using a Temp Run Box and you get shocked! Why! 520 Pg. 4 - CORRECT ANSWER Bad Ground Scaffolding, You have 32' of rise, you are using 3x5 scaffolding. Where will the tie off points be ? 140 PG. 287-288 - CORRECT ANSWER Scaffolding shou...

NEIEP 200 Final Exam V1(New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Graded A QUESTION What safety precaution is most important when using rollers to move heavy equipment? Answer: Pipe rollers must be picked up by the hollow inner pan QUESTION What are two things a compound mitre saw does best at the same time? Answer: Bevel and mitre cuts can be made at the same time. QUESTION When the pit down final limit switch is actua...

NEIEP 200 Final Exam V2 (New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Graded A QUESTION who can give the command to stop a hoist? Answer: anyone QUESTION which safety feature protects against getting caught under a counterweight? Answer: counterweight guard QUESTION you are installing a 250 fpm freight elevator. what type of buffers should you use? Answer: oil buffers QUESTION you are working in a pit ...

NEIEP 200 Final Review Which lay of wire rope has the strand wires in line with the rope axis? - ANSWER Regular Lay At what speed should the counterweight safeties be set to trip? - ANSWER Up to 10% higher than the car governor Which type of safety uses an oil buffer between the car and safety planks? - ANSWER Type C What is the purpose of the termina...

Tower Crane Exam Prep (2024 / 2025 Update) Questions and Verified Answers | 100% Correct Q: What is axis of rotation? Answer: The vertical line about which a crane swings Q: The condition of a super structure of a Tower Crane necessary for climbing Answer: Needs to be Balance Q: What is ballast? Answer: The weight added to the crane base to create additional stability. It does not rotate when the crane swings. Q: What is base anchor bolts? Answer: A base that is bolted to the footing Q: How many...

Elevator Mechanic Exam Review Exam | Questions and Answers Graded A+ Latest 2024/2025 Know the formula for RPM - CORRECT ANSWER RPM = 60 ∙ ƒ ÷ P÷2 = Step 1. 60 x Frequency (Hz.) = Step 2. Poles ÷ 2 = Take answer 1 and ÷ by answer 2 = You are using a Temp Run Box and you get shocked! Why! 520 Pg. 4 - CORRECT ANSWER Bad Ground Scaffolding, You have 32' of rise, you are using 3x5 scaffolding. Where will the tie off points be ? 140 PG. 287-288 - CORRECT ANSWER Scaffolding shou...