Engineering Machine Design Review

Reamers are made of the following part: body, shank and:

Rack gears have identical term/definition as to the ________ of the spur gear.

What is the Nickel steel type AISI or SAE designation?

Compute the tooth circular thickness of the pitch circle of a 14 1/2 degree full depth tooth of 15 diametral pitch. Material used is aluminum bronze.

________ of the parts is the boundary that separates the object from another object or space.

A lathe machine used in manufacturing and with several cutting tools. This is a mass production lathe.

The narrow surface followed along the groove that gives the size of the drill and keeps it straight/aligned.

Different forces that can be combined are called ________.

________ equal in magnitude but opposite in direction and parallel called couple.

The three main parts of a screw driver are: handle, blade and ________.

For easy drilling, a punch is applied to have the indentation. The tip of this tool should always be ground to 90 deg angle and made out of hardened steel material.

SAE 1215 belongs to the ________ steel family.

Pipe color code for water.

Steel is the generic term of variety of:

Working stress in which a machine member is subjected exceeds the ultimate strength of the said member. To avoid this situation, a designer should employ:

Forces acting on a single point are called ________ forces.

For a simply supported steel beam with load at the midpoint, the moment diagram shows in the form of a ________.

This refers to the phenomena of continuous stretch load even if the stress is less than the material yield.

Where laying out, assembly and final fitting work on parts is being worked out specially on handy parts, etc.

Poisson's ratio is the ratio of:

Cutting lubricants used in drilling, reaming and tapping of cast iron parts.

Gear tooth cut inside a cylinder or ring is called ________ gear.

The angle of action to the pitch angle ratio in a gear operation is defined as ________.

Anvil, hammer, burners are useful in shop operation.

Fire of ordinary materials such as cloth, papers, rubber, plastic etc. is a class ________ fire.

A 120 tooth gear meshed with a 36 tooth pinion turning at 300 rpm. Determine the unknown speed of the gear.

A steel rod 3 cm in diameter and 80 cm long has an allowable elongation not to exceed 1.5 mm, find the allowable load in kN.

A horizontal beam 20 ft long is subjected to a load of 1000 lbs located at its center. The dimension of the beam is 3 x 6 inches, respectively and its unit weight is 150 lb/ft. Find the reactions at both ends.

Determine the radius of gyration of a 3x6 inch horizontal beam.

Find the flexural stress of a 3x6 inch horizontal beam subjected to a central 1000 lb load.

The section modulus of 8 cm x 15 cm rectangular beam, in cm^3, is closest to:

What will be the elongation of the 1-inch round steel bar 8 ft long if subjected to a load of 12,250 lbs?

A steel specimen is 3/8 inch diameter at the root of the thread. It is to be stressed to 40,000 psi tension. What load must be applied?

Determine the magnitude of the reaction at the fixed end of a 5 ft cantilever beam loaded with 500 lbs at the end.

Find the radius of gyration of a 2-inch square cantilever beam.

Find the flexural stress of a 5 ft cantilever beam with a 500 lb end load.

Determine the angular deflection in degrees of a SAE 1040 steel shaft in a length of 1/2 meter.

Determine the power developed by the shaft rotating at 1200 rpm and the twisting moment of 1050 in-lb.

Compute the linear speed of a 55 cm diameter pulley mounted on a 6.1 cm shaft transmitting 120 hp.

Compute the working strength of a bolt having a diameter of 1 inch under a tensile stress of 4000 psi.

Compute the lead, in inches, of a double threaded screw with 5 threads per inch.

What pressure is required to punch a hole 1 inch diameter through a 1/4 inch steel plate?

A 100 inches long aluminum bar is subjected to a tensile stress of 25,000 psi. Find the elongation.

Find the average shear stress in a 6 inch diameter rivet undergoing a shear force of 1750 lbs.

A copper column of annular cross section has an outer diameter of 15 ft and is subjected to a force of 45,000 lbs. Determine the wall thickness.

A specimen is subjected to a load. When the load is removed, the strain disappears. What can be deduced?

Find the elongation of an 8 inch diameter, 100 inch long aluminum bar when loaded to its yield point of 37 ksi.

What is the required wall thickness for a cylindrical pressure tank 3 feet in diameter containing 1000 psi pressure?

A car starts from rest and moves with a constant acceleration of 6 m/s^2. What is the speed after 4 seconds?

A ball is thrown vertically upward with an initial speed of 80 ft/sec. How long will it take to return to the thrower?

It is ideal for maximum quietness in sprocket drive operation to choose ________ or more teeth.

Which study deals only with the motion of bodies without reference to the forces that cause them?

The shaft that is used to connect or disconnect the drive at will is called:

The distance from a point on a screw thread to a corresponding point on the next measure along the axis:

Martensite (stainless steel) contains 4 to 26% Cr and a maximum of ________ % nickel.

Progression change of position of a body is called:

Recommended hardness of pinion for helical/herringbone gear tooth should be ________ BHN point to sustain life.

Fast process of analyzing all elements and chemical components of casting:

In small quantity this alloy is effective for improving strength at temperature.

The ratio of the arc of action to circular pitch or length of action to the base pitch is called:

Which of the following is not a kind of mandrel?

A car travels 120 kph, takes 0.5 sec to apply brakes, then decelerates at 8 m/s^2. Compute the total distance traveled before stopping.

Four compression springs support a 700 kg load in parallel. Each is rated at 0.609 kg/mm. Compute the deflection.

Which of the following is a section in a machine shop operation?

Shear modulus is also known as:

To prevent leakage in dynamic seal, we use:

The frictional force depends on the coefficient of friction and:

Which of the following is NOT part of the headstock?

Two or more forces acting together could be replaced by a single force with the same effect. This is the:

To prevent engine vibration from affecting the surrounding area, isolate the foundation by at least ________ mm.

Grout material use under the machine bed and foundation surface should be:

A gear set with ratio 3 and center distance 16 inches has 80 teeth. What is the circular pitch?

A body weighing 1000 lb falls 6 inches and strikes a 2000 lb/in spring. The deformation is:

For a single universal joint, shaft angle should be ________ degrees maximum.

The recommended lubricant for the chain drive operation.

What pressure is required to punch five holes 3 inches in diameter through a 1/2 inch steel plate?

A flywheel at 220 rpm slows to 65% in 0.75 sec during punching. Compute the angular acceleration in rad/s^2.

Compute the diameter of the shaft receiving 250 kW at 900 rpm.

A flywheel has a 1m diameter and 500kg mass. What torque is needed for 120 rev/s/min angular acceleration?

Compute the load in kN on a 7.62 cm diameter, 150 cm long steel rod if max elongation is 1.5 mm.

Compute the shaft diameter to transmit 30 HP at 300 rpm with torsional deflection of 0.11 deg per ft. length.

Find the tooth thickness of a 20 degree tooth with circular pitch 1.25 in and whole depth 0.75 in.

Determine the speed of a milling cutter with 5 inch diameter and cutting speed of 400 fpm.

Given shear stress 10,000 psi and shear modulus G = 1.15 x 10^7 psi, find the shear strain.

Determine the linear speed of a 100 cm pulley on a 50.8 mm shaft transmitting 100 HP.

What is the working strength of a 3 inch bolt tightened with 12,000 psi allowable stress?

A helical spring with 24 coils and G=89 GPa has OD 12 cm and wire d 0.65 cm. Compute max deflection for 60kg.

How long will it take to weld a 4 ft seam at a rate of 20 inches per minute?

Determine the polar moment of inertia of a hollow shaft with OD 100 mm and wall 15 mm.

Determine the length of a square key for a 60 mm shaft transmitting 40 kW at 300 rpm with stress 70 MPa.

A spur pinion at 1800 rpm transmits 900 kg tangential load. Determine the power if pitch diameter is 4 in.

What power in HP can a 20 ft lineshaft deliver at 360 rpm with 0.08 deg/ft deflection limit?

The 2/5 of 3/16 is equal to:

Two shafts connected by 6 bolts (20mm dia) on 150mm PCD. If 120 N-m torque is applied, find bolt shear stress.

Gears A and B have radii 100 and 500 mm. Shaft A at 800 rpm has 113 N-m torque. Find torque in shaft B.

Find the torsional moment in N-mm when a shaft delivers 40.2 HP at 260 rpm.

Compute the speed of a satellite to orbit Earth at an elevation of 200 km. Earth radius is 6400 km.

A multi-spindle drill press drills six 19mm holes. If 1 kW removes 16,000 mm^3/min, find motor power at 80% efficiency.

If a hollow circular bar has r1 = 3/4 r2, what % of torque can it carry compared to a solid shaft?

A steel collar (199.8mm at 15°C) must be heated to fit a shaft at 200.8mm. Find the required temperature.

Find the tooth thickness on the tooth circle of a 20 degree full depth involute tooth having a circular pitch of 26.6 mm and whole depth of 16 mm.

What pressure is required for punching 6 holes of 2 in diameter thru a 1/2 inch steel plate?

Compute the maximum deflection of a 22 coils helical spring with a 120 kg load, G=80 GPa, OD=8cm, and wire d=8mm.

What is the working strength of a 4 in bolt screwed up tightly in a packed joint with 12,000 psi allowable stress?

Determine the strength of a 1/4 in bolt having a yield stress of 60 ksi and stress area of 0.1134 in^2.

The total weight of steel plate size 1/4 x 4 x 20 is:

If the ultimate shear strength of a steel is 42,000 lb/in^2, the force to punch a 4 in diameter hole in a 1/2 in steel plate is:

Gears A and B have radii 100 and 700 mm. Shaft A at 1200 rpm has 130 N-m torque. Find torque in shaft B.

A prismatic bar (40in long, 4in^2 area) is fixed between walls. If temp rises 50°F, what is the axial force? (k=5x10^-6)

Find the center distance for a 16-tooth pinion and 72-tooth gear with a module of 8.

A 6 kN flywheel at 7 rev/s slows to 4 rev/s. Determine the energy released. Mean diameter is 90 cm.

Find required thickness for a 3ft diameter pressure tank at 1000 psi with FS=2.5 and Sy=30ksi.

A 200 mm shaft with 20 kN load and 0.05 friction coefficient rotates at 600 rpm. Calculate power loss.

What is the maximum allowable load F if FS=1.5, Sy=3000 psi, and area=25 in^2?

A 100 inches long aluminum bar is subjected to 25,000 psi tensile stress. Find the elongation (E=10x10^6).

A 1-ton drop hammer is propelled by a 12in cylinder at 100psi. Find impact velocity if stroke is 28in.

A 2m diameter flywheel (1500kg) needs torque for 150 rpm/sec acceleration. What is the torque?

Determine the linear speed of a 50 cm pulley on a 1 inch shaft transmitting 10 hp.

How long to mill a 3/8" by 2" keyway using a 24-tooth cutter at 1000 rpm and 0.005 feed?

What power in HP can a 20 ft lineshaft deliver at 360 rpm with 0.08 deg/ft deflection limit?

The following pertain to joining of metals except:

Which of the following is considered a semi-solid lubricant?

Which of the following is not a classification of alloy steels in this context?

Which alloy improves the machinability of alloy steels but affects different alloys differently?

Which of the following increases the hardenability of alloy steels?

Which alloy improves hardenability economically, resistance to corrosion, and high temperature strength?

Which alloy improves the ratio of endurance strength to ultimate strength of medium carbon steels?

When steel casting are heat treated, the carbon content generally falls within what range?

Which is the most effective alloy in increasing the toughness of steel?

A very inert plastic that solves many obdurate problems of gaskets and seals.

What is the Molybdenum-chromium-nickel steel designation?

Which alloy steel is used in manufacturing bolts, studs, and tubings subjected to torsional stresses?

What is the standard SAE designation for Molybdenum steel?

Big chain sprocket wheels designed with spokes are generally elliptical with major axis ________ times the minor axis.

The cross sectional area of a flywheel spoke at the rim should not be less than ________ of the area at the hub.

A hollow sphere (radius 10in, thickness 0.1in) has 100 psi internal pressure. What is the max normal stress?

A 30 ft steel rod must transmit 980 lb without stretching more than 1/8 in. What diameter is required? (E=30x10^6)

Determine the stress in a fixed steel bar if the temperature drops 130 deg F. (k = 6.5 x 10^-6).

A 3 in diameter steel shaft twists 5 deg in 20 ft. Determine the maximum shearing stress.

Determine the torque for a 1 in diameter shaft if shear stress is not to exceed 8000 psi.

The top and bottom for gears is similar formed as to crest and ________ screw thread.

What is the Silicon-manganese steel designation?

What is the maximum stress induced in a material when subjected to intermittent or repeated load without failure?

Compute how many 1/4 inch diameter set screws required to transmit 3 HP at 900 rpm. Shaft diameter is 1 1/4 in.

What is the name of the surface connecting the crest and roots of the screw thread?

Which element is a good general purpose deoxidizer and promotes fine grain in steel?

What is the Nickel-chromium-molybdenum steel designation?

The radial distance between top of a tooth and bottom of the mating tooth space is:

Plus or minus tolerance can also be called as:

Which of the following is NOT a viscoelastic material?

A jackhammer consumes air at 0.01 m³/sec at 30°C and 800 kPa. Determine the minimum capacity of the air compressor in m³/sec at 21°C and 100 kPa if 10 jackhammers operate simultaneously.

What maximum output load can a pneumatic cylinder (40 mm diameter) sustain at 500 kPa air pressure, assuming a 15% friction loss?

Compute the bursting pressure of a spherical air tank with diameter of 2 m and wall thickness of 1/8 in if the tensile stress is 460 MPa and joint efficiency is 80%.

A steel cylindrical air receiver (6 ft diameter, 220 psi load) has a design stress of 10,000 psi and 90% joint efficiency. Determine the bursting pressure if lap welding tensile strength is 70,000 psi.

A cylindrical tank (2000 mm diameter) is subjected to 3 MPa. If design stress is 170 MPa and joint efficiency is 70%, determine the plate thickness.

Determine the theoretical force in an air cylinder operating at 10 bar with an inside diameter of 100 mm.

What is the size of an air cylinder operating at 10 bar with a required force of 7854 N and a load ratio of 90%?

What is the pressure in an air cylinder producing 5 kN force on an 80 mm diameter piston?

A 60x200mm double acting air compressor works at 8 strokes/min. If it compresses 2 liters per 100mm stroke, find the liters/min.

A cylindrical air receiver (600 mm diameter) handles 4 MPa. If allowable stress is 70 MPa, find the wall thickness.

An air cylinder (50 mm diameter) handles 10 MPa. If allowable stress is 50 MPa, determine the required thickness.

Determine the time in seconds to drill an 8-inch deep hole if feed is 0.0025 in/rev and speed is 200 rpm.

How long will it take to drill through a 10 cm plate with 0.1 mm/rev feed and 750 rpm speed?

How long will it take to cut a 4-in long thread at 100 rpm with a 20 TPI configuration?

Compute the time in seconds to saw a 10-in cut in aluminum if hacksaw speed is 120 strokes/min and feed is 0.127 mm.

How long would it take to oxy-acetylene cut crosswise a 4 ft plate if the machine cuts 10 ft in 12 min?

How long to manually oxy-acetylene cut crosswise a 4x20ft plate into four 4x5ft sheets (3 cuts)? (Rate is 12 min per 10ft length).

How long to manually oxy-acetylene cut lengthwise two 8x20ft plates into four 4x20ft plates? (Rate is 12 min per 13.5ft length).

Determine the economical oxygen consumption to cut lengthwise a 20ft plate if cutting rate is 18 in/min and oxygen rate is 130 ft/hr.

Determine acetylene consumption to manuals cut crosswise a 4x20ft plate into five 4x4ft sheets. (Rate is 12 min per 13.5ft, gas rate is 10 cu.ft/hr).

A gear set has ratio 4, gear with 100 teeth, and pinion with 25 teeth. Find circular pitch if pitch diameter is 6.

A gear (80 teeth) and pinion (20 teeth) has ratio 4. Find circular pitch if center distance is 20.

Find the tooth thickness on the pitch circle of a 14 1/2 degree gear (80 teeth) and pinion (20 teeth) set with center distance 20.

A gear (80 teeth) and pinion (20 teeth) has ratio 4. Find center distance if circular pitch is 0.885.

Find the diametral pitch for a gear (80 teeth) and pinion (20 teeth) set with ratio 4 and center distance 20.

Determine the hoop stress at the inner surface of an air cylinder (16in ID, 32in OD) with 8000 psi internal and 3000 psi external pressure.

A 750 mm pulley transmits 120 hp at 700 RPM. f=0.30, theta=152 deg, stress=2 MPa, thickness=20 mm. Find the belt width.

A flat belt transmits 100 HP. Small sheave 180mm (1200 rpm), large 450 rpm. C = 2*D2. Find belt length and small sheave arc of contact.

Determine the section modulus of a 10 cm x 25 cm beam.

Determine the maximum stress of a 10 cm x 25 cm beam if the maximum moment is 1000 N-m.

What is the radius of gyration of a 10 cm x 25 cm beam?

Determine the moment of inertia of a beam having an area of 150 cm^2 and radius of gyration 5 cm.

The moment of inertia of a circle of radius 5 cm is nearest to:

The section modulus of a circle of radius 5 cm is equal to:

The polar moment of inertia of a shaft of radius 5 cm is equal to:

A fluid power system is one that transmits energy through the use of pressurized:

What component helps keep the line free from dust, water and oil in a pneumatic system?

In the air production system, which device indicates the pressure in the tank?

Which component of the air production system transforms mechanical energy into pneumatic energy?

What transforms electrical energy into mechanical energy to supply power to the compressor?

Which device controls the electric motor by sensing the pressure in the tank?

Which device prevents compressed air from flowing back to the compressor when it is stopped?

Which component drains the water condensing in the tank?

Which device releases compressed air if the pressure in the tank rises above the allowed limit?

Which device is used to avoid having water in the downstream system?

A system that is powered by air is called:

Which device is used as the storage of compressed air?

What are the two main sections of a basic pneumatic system?

What is mainly used to do work by acting on a position or vane?

A machine which is used to increase the pressure of air by decreasing its volume is an: