Machine Design Refresher Manual

What is the recommended minimum center-to-center distance between sprockets in terms of pitch?

What is considered the maximum center distance between sprockets in terms of pitch to avoid catenary tension?

What material is typically used for the smaller sprockets in a drive?

Which material is commonly used for large sprockets, particularly in drives with large speed ratios?

What is the preferred material for large sprockets under severe service conditions?

Calculate the rpm for machining a cast iron workpiece 10 inches in diameter with a cutting speed of 100 fpm.

How long will it take to weld a 4 ft long seam with an electric arc welding rate of 12 inches per minute?

How long will it take to saw a steel plate with a 4 ft cut length using a power hacksaw at 120 rpm and 0.008 in feed per stroke?

Which machinery operation involves a reciprocating workpiece and a stationary tool head?

What mechanism is usually used for indexing in a machine tool?

Which machine shop equipment is used to flatten surfaces horizontally, vertically, or angularly?

What is the required base area of a foundation for an engine weighing 5000 kg with soil bearing capacity of 45.5 kPa and e=0.11?

By how many millimeters should a foundation be isolated from floor slabs to eliminate vibration?

How many additional days must pass before operating a machine once it has been placed on its foundation?

What is the primary purpose of supporting heavy machinery on solid foundations?

The mass of a foundation should be how many times the weight of the machinery?

A mass of how many times the unbalanced inertial forces should be used to dampen vibration?

Where must the combined center of gravity of the equipment and foundation be kept for stability?

What factor of safety is typically used for soil bearing stress in foundation design?

What is the preferred concrete proportion for building foundations?

Reinforcing steel weight should be what percentage of the foundation weight?

What is the minimum diameter for foundation bolts?

A pipe sleeve for foundation bolts should have a length of at least how many times the bolt diameter?

What is the minimum embedment length for bolts in concrete to prevent pulling out?

For diesel engines, how many days should pass before placement and then before operation on a foundation?

What leaner concrete mixture can be used for large engine foundations in good firm soil?

What is the standard weight of concrete per cubic meter?

What is the practical rule for foundation depth of diesel engines in terms of stroke?

What percentage of the machine load should be added for impact in steam turbine foundation design?

What is the term for the act of cutting out a piece of metal at a desired shape and size?

How many 1/8 inch markings are in a standard foot rule?

Calculate the rpm for machining a 6-inch diameter cast iron workpiece at a cutting speed of 50 fpm.

What is the rpm for a carbide-tipped milling cutter with a 1.5 in diameter at a cutting speed of 200 fpm?

What is the minimum weight of reinforcing steel bars relative to the foundation weight to avoid thermal cracking?

What item should be avoided when operating a lathe machine?

What is the recommended best cutting angle of a drill for work on steel or cast iron?

How long will it take to saw an aluminum plate with an 8-inch cut length using a power hacksaw at 120 rev/min and 0.006 in feed per stroke?

How long will it take to mill a 2-inch keyway with a 24-tooth cutter at 100 rpm and 0.005 in feed per tooth?

How long will it take to weld a 3 ft long seam at an electric arc welding rate of 18 in/min?

What is the minimum required height from floor to ceiling for work rooms?

What is the maximum number of persons allowed per 12 cubic meters of workspace?

Floor opening covers must leave no openings more than what width?

What is the minimum load a wall opening guard must be able to withstand?

What is the standard minimum height for railings from floor level to the top rail surface?

What is the maximum spacing allowed between posts for standard railings?

What is the minimum required height for toeboards?

What factor of safety is required for stairs and platforms carrying a live load of 500 kg?

What is the minimum distance required from the rungs of a fixed ladder to the nearest fixed object on the climbing side?

What is the minimum width for catwalk runways if a railing is omitted on one side?

What is the name of the top surface joining the two sides of a screw thread?

Which surface connects the crest and roots of a screw thread?

What is the theoretical profile of a thread for a length of one pitch on which the design forms are based?

What is the distance measured radially between the major and minor cylinders of a thread called?

What is the term for an incomplete thread that is not fully formed at the root or crest?

What is a continuous and projecting helical ridge on a cylindrical or conical surface called?

Which imaginary cylinder bounds the crests of an external straight thread?

What is the term for the reciprocal of the axial pitch in inches?

What is the radial distance by which mating thread forms overlap each other?

Which branch of mechanics deals only with the motion of bodies without reference to forces?

What is the term for the progression change of position of a body?

On what two factors does frictional force depend?

What is a single force that can replace two or more forces acting together with the same effect?

How is the time rate of doing work defined?

What property of matter causes it to resist any change in its motion or state of rest?

What is considered the measure of the inertia of a body?

What is the definition of acceleration?

What is the term for a quantity that has magnitude only?

What is the term for two equal, parallel forces acting in opposite directions?

What is the point where a body is perfectly balanced if suspended?

What is the name for motion that is decreasing in velocity?

What is the likely consequence of having a flat belt that is too tight?

Pulleys made of _______ are 45 to 55% lighter and have 2.35 to 2.70% less slippage than _______ pulleys.

To what percentage of solid pulley speed should the maximum speed of split pulleys be limited?

What is the general maximum safe speed for solid cast iron pulleys?

If a driven pulley is 4 inches at 800 rpm and the driver is 26 inches, what is the driver's speed?

Find the driver diameter if the driven is 36 inches at 150 rpm and driver speed is 600 rpm.

If a driver is 24 inches at 100 rpm and the driven rotates at 600 rpm, what is the driven diameter?

If a 15-inch driver runs at 180 rpm and the driven is 9 inches, what is the driven speed?

What percentage more power do wood pulleys transmit compared to cast iron pulleys?

How many arms do most cast-iron pulleys typically have?

How many arms are often found on cast-iron pulleys with a diameter of 5 feet or larger?

How many inches more than the belt width should the pulley face be for belts under 12", 12-24", and over 24"?

What can be used to increase the belt contact angle on open drives with short centers?

Which type of belt is suitable for exposure to weather or steam because it resists moisture?

Which belt speed is NOT recommended for flat leather belting?

Which leather belt type is suitable for high-speed motor drives and small pulleys?

What is the term for the stress level where the number of cycles to failure is infinite?

What is another name for the modulus of elasticity in shear?

What is another name for the modulus of elasticity in tension?

What are the primary functions of cutting fluids in machining?

What is the typical oil-to-water ratio for soluble oil cutting fluids?

Which type of cutting fluid is extracted from petroleum products?

Which type of cutting fluid forms emulsions when mixed with water?

What is the term for a failure mode where cyclic stresses and corrosion combine?

What is the primary purpose of a factor of safety in design?

What is the moment of inertia of a square with the axis at the center?

What heat treatment process describes a time-temperature-dependent change in properties?

At what temperature does a change in phase occur in an alloy?

What process involves heating and holding a metal followed by cooling at a suitable rate?

What is the name of the place where metal parts are cut to size and put together to form mechanical machines?

Which machine tool is used mainly for producing holes in metal?

What is the most common cutting tool used in a drilling machine?

Which machine is ordinarily used for finishing flat or partly curved surfaces of metal pieces not usually over a foot or two long?

During which stroke does a shaper perform the actual cut?

Which machine is used for producing flat surfaces on pieces too large or too heavy to hold in a shaper?

What machine removes metal using a revolving cutter with many teeth?

Which machine tool uses an abrasive wheel to obtain a high degree of accuracy and a smooth finish?

What term refers to the process of laying out, assembling, and final fitting of parts in a machine shop?

What is the process of laying out and fitting parts for heavy works called?

Which of the following are considered branches of toolmaking?

What is the primary hazard associated with machine tools used for milling?

What should a milling machine operator wear specifically to avoid eye hazards?

Which of the following is an unsafe operating practice for a milling machine operator?

What is an unsafe practice for a planer and shaper operator regarding machine settings?

What is a good safety practice for protecting oneself while using a lathe machine?

What is the most common type of accident during grinding operations?

What industrial term is used for the safe storage of tools, parts, and items used in manufacturing?

In machine shop safety, you should not attempt to oil, clean, or ________ any machine while it is running.

General safety precautions state you should never try to ________ the machine with your hands or body.

When two students work together, how many should operate the machine or switches?

Which item of clothing or jewelry is specifically mentioned as something that could get caught in moving machinery?

What clothing/safety equipment should be worn when operating any machine?

Housekeeping safety rules state you should not leave tools or work on a machine table even if the machine is ________.

In shaper safety, when should you NEVER remove chips?

Which of the following is NOT used for simple Linear Measurements?

Which linear measurement tool allows the dimension to be read directly from a scale?

What measuring tool is used specifically to transfer measurements?

Tools like steel squares and protractors are used to determine what characteristics?

Which measuring tool makes accurate measurements against shallow shoulders possible?

In rapid production, what gage is commonly used for cylindrical work?

What are the names for the top and bottom of a machinist's hammer head?

What is the main function of a screw driver?

What is the end of the screw driver that fits into the screw slot called?

What is the steel portion of a screwdriver that extends from the handle?

Which instrument is used for exerting a twisting strain when turning bolts and nuts?

Which type of wrench allows a machinist to determine how much twisting force is being applied?

Which wrench type uses sockets of different sizes attached to a single handle?

What tool is designed for screws with an internal hexagonal head?

What is the primary instrument used to manually saw metal?

What is the standard range for the number of teeth per inch on hacksaw blades?

Which type of drill press is used for small holes and hand feed?

Which drill press type consists of two to eight units mounted on a single base?

Which part of the drill press holds the drill chuck or socket?

What is the operation of producing a circular hole by removing solid metal?

What is the operation of sizing and finishing a hole using a tool with several cutting edges?

What is the operation of enlarging a hole using an adjustable tool with only one cutting edge?

What is the name for making a cone-shaped enlargement at the end of a hole for a flathead screw?

Which part of a drill helps drive it because the taper hold alone is not enough?

What is the term for the "backbone" of a drill bit, the section located between the flutes?

What is the name of the arc of the pitch circle through which a tooth travels from initial contact to the pitch point?

What is the SAE steel designation for molybdenum-chromium-nickel steel?

What pressure is required for punching a 2-inch diameter hole through a 1/2-inch steel plate?

What is the term for a bearing surface that completely surrounds the journal?

What is the ratio of the pitch diameter in inches to the number of teeth called?

What is the ideal helix angle range for herringbone gears?

Which machine member is used to connect shafts and disconnect them at will?

How is Poisson's ratio defined?

In chain drive design, what is the maximum recommended angle between two tight chain strands?

What is the product of the mass and the linear velocity of a body called?

What is the total weight of 2 steel plates size 3/4" x 3' x 20 ft? (Density = 0.283 lb/in³)

What is a characteristic of a hydrostatic bearing?

A lineshaft at 450 rpm with a 40cm pulley connects to an 18cm pulley. If a 25cm pulley on the same countershaft transmits to a machine at 500 rpm, what is the machine pulley diameter?

Which of the following is considered a common dry lubricant?

What is the nominal shear stress at the surface of a 50mm diameter shaft subjected to a torque of 0.48 KN-m?

An idler of 24 teeth is between a 12-tooth pinion at 800 rpm and a 60-tooth gear. What is the final speed and direction of the driven gear?

What horsepower can a 1-inch diameter short shaft transmit at 380 rpm?

What type of bolt is commonly used in construction and is threaded at both ends?

What is the plane perpendicular to the axial plane and pitch plane in gears?

Find the torsional deflection in degrees per foot for a 1.4375" shaft transmitting 40 hp at 1400 rpm (G = 12x10⁶ psi).

What is considered a reasonable diameter for a steel hub in terms of shaft diameter D?

What is another name for an eccentrically loaded bearing?

In wire rope terminology, what does "Lang lay" mean regarding the twist of wires and strands?

What is the term for continuous stretching under load at stresses less than the yield point?

What is the term for opposite directional forces that are equal in magnitude and parallel?

What is the percentage of nickel in SAE 2340 shafting?

Which of the following is a unit of energy?

A spur pinion at 600 rpm transmits 25 kw with a 100mm pitch diameter. What is the tangential load?

What is the moment of inertia of a rectangle with base "b" and height "h" about its base?

What is the primary function of a clutch in a machine tool?

What happens if two equal and opposite collinear forces are added to a system already in equilibrium?

Which instrument is used to analyze the composition of metals?

When is it necessary to use splines instead of keys?

Which of the following SAE steel designations contains chromium?

A 457kg flywheel with 375mm radius slows from 3.0 to 2.8 rev/sec. How much energy is lost?

What are the potential results of a lack of backlash in spur gear design?

At what temperature (in °F) does ferrous metal typically exhibit maximum strength?

The arc of the pitch circle through which a tooth travels from point of contact to the pitch point is the:

Identify the SAE designation for molybdenum-chromium-nickel steel.

What is a bearing called when it completely surrounds the journal?

What term describes the ratio of pitch diameter in inches to the number of teeth?

Which component allows shafts to be connected or disconnected at will?

What is Poisson's ratio the ratio of?

The product of mass and linear velocity is known as:

In a hydrostatic bearing, the lubricant is:

Which of these is a commonly used dry lubricant?

What is the name of a bolt that is threaded on both ends?

The plane perpendicular to the axial plane and pitch plane in gears is called the:

What is another name for an eccentrically loaded bearing?

Two parallel forces equal in magnitude but opposite in direction are called a:

What is the horsepower required for a punch operation punching a 1-in diameter hole in 1/4-in thick steel every 10 seconds? (Su = 60,000 psi)