Millwright stuvia 2023 - Study guides, Class notes & Summaries

The breaking strength of rope is a. force needed to pull rope b. force needed to tear rope c. force needed to break the rope d. force needed to stretch rope - ANSWER c. force needed to break the rope Traction grade wire rope has a breaking load of __________ tons per square inch a. 110-190 b. 50-60 c. 45-90 d. 80-90 - ANSWER d. 80-90 Special improved plow grade wire rope has a breaking load of _________ tons per square inch a. 120-130 b. 50-60 c. 45-90 d. 80-90 - ANSWER a. 120-...

Preventive maintenance - ANSWER is the periodic inspection and maintenance of plant assets and equipment to uncover conditions that may to equipment failure or shortened life This measures the amount of contaminants per litre of fluid. a. ferromagnetic analysis b. total base number c. infrared tests d. gravimetric level analysis - ANSWER d. gravimetric level analysis These tests indicate how much of the oil additives have been depleted a. ferromagnetic analysis b. total base number ...

Compared to fibre core, IWRC tends to be _______ resilient and less capable of absorbing shock loads a. more b. less c. equally d. slightly more - ANSWER b. less What rope is considered to be a standard wire a. Lang lay b. right regular lay c. left regular lay d. performing lay - ANSWER b. right regular lay What safety factor is used for elevators? a. 30-1 b. 10-1 c. 20-1 d. 10-80 - ANSWER ? Google What is the maximum capacity in Kg of a medium duty ladder? a. 136 b. 102 ...

What is pressure defined as? - ANSWER Force per unit area F=(P)(A) What is the pressure of the Earth's atmosphere at sea level? - ANSWER 14.7 psi How is power defined? A. The rate or velocity at which power is done B. The rate or velocity at which work is created C. The speed of the velocity in a power system D. The rate or speed at which work is done. - ANSWER D. The rate or speed at which work is done. What is a watt? A. watt is one newton lifted 1 m in one second. B. Power uni...

What are the principle parts of a friction bearing housing? - ANSWER Base, Base bolt slots, cap and cap bolt holes. What are friction bearing housings made from adn what factors influence the choice of housing? - ANSWER Cast Iron, Cast Steel, Fabricated Steel. Choice depends on the Load, The Rotational Speed, the Direction of Pull and the Support Design How are friction bearing dimensions expressed? - ANSWER In a fraction of their nominal size. Do all new bearings of the same shaft siz...

What are the 2 main categories of screw compressor - ANSWER Oil wet and oil free dry screw comp Witch rotor is the driver on a screw compressor - ANSWER The male rotor What determines the capacity of a screw compressor - ANSWER Rotor length, diameter, lobe flute design and speed What determines the discharge pressure of a screw compressor - ANSWER The location of the inlet port along the rotor, the length of path and the discharge port location What function does the oil in a wet scr...

What controls the servo valve in a hydraulic governor - ANSWER Electrical controller What is the purpose of a sleeve - ANSWER To reduce shaft wear Why are gate valves used on pump inlet and outlets - ANSWER For isolation What does misaligned bearing bores cause - ANSWER Bent shaft an instrument wear What is the purpose of return idlers - ANSWER Support belt on return What would cause low NPSHA? - ANSWER Cavitation What does CMM allow for? - ANSWER Allows pro movement along thre...

saddle - ANSWER the safe working load of a rigging hook is accurate only when the load is suspended from the ______________ of the hook 15 - ANSWER OSHA requires that a hook be replaced if the throat has opened _____ percent or more from it's original size. 40 - ANSWER A hook that is point loaded could theoretically carry about ________ percent of the rated load. Shackels - ANSWER Slings are attached together using ___________. 1 1/2 - ANSWER tapped holes used with screwed-in eye bo...

NCCER was created to - ANSWER Award a college degree for completion of the NCCER Standardized Curricula The purpose of NCCER's Registry is to. - ANSWER Provide industry-wide credential and assure national portability of skills. Two of the more important traits of the professional Millwright are. - ANSWER Honesty and integrity The key to improve your performance at the job site and getting higher wages is. - ANSWER Setting goals and working toward them The best way to deal with unsaf...

Area of Triange - ANSWER A=1/2bh Area of a circle - ANSWER A=πr² Volume of a rectangular solid - ANSWER V=lwh Volume of a cylinder - ANSWER V=πr²h Volume of a sphere - ANSWER V=4/3πr³ Volume of a pyramid - ANSWER V=1/3Bh Volume of a cone - ANSWER V=1/3πr²h Circumference of a circle - ANSWER C=2πr Pythagorean Theorem - ANSWER