What is the polar section modulus of a 4-inch solid shaft?

A parallel helical gear-set consists of a 19-tooth pinion driving a 57-tooth gear. The pinion has a left-hand helix of 20^o, a normal pressure angle of 14 1/2 deg . and a normal diametral pitch of 10 tooth/inch. If the pinion is to transmit 50 Hp at a speed of 1750 rpm, determine the center distance of the two gears.

Find the horsepower lost when a collar is loaded with 1000 lb, rotates at 25 rpm, and a coefficient of friction at 0.15. The outside diameter of the collar is 4 inches and the inside diameter is 2 inches.

Three extension springs are hooked in parallel that supports a single weight of 100 kg. The first spring is rated at 4 KN/m and the other two springs are rated at 6 KN/m each. Determine the equivalent stiffness of the three springs

A triple thread worm has a lead angle of 17^o and a pitch diameter of 2.2802 inches. Find the center distance when the worm is mated with a wheel of 48 teeth.

A sleeve bearing has an outside diameter of 38.1 mm and a length of 50.1 mm, the wall thickness is 3/16 inch. The bearing is subjected to radial load of 450 lb, determine the bearing pressure.

A 1.75-inch diameter shaft is supported by two sleeve bearings. The total load on the two bearings is 2800 lb. Find the friction power loss, in Hp, if the coefficient of friction between shaft and bearing is 0.10 and the shaft rotates 200rpm.

A roller chain and sprocket is to drive vertical discharge bucket elevator. The pitch of chain connecting sprockets is 1.75”. The sprocket is rotating at 120 rpm and has 11 teeth while the driven sprocket is rotating at 38 rpm. Determine the number of teeth of driven sprocket.

A vertical steel cylinder water tank is 30 m in diameter and 45 m high. The allowable stress of the steel plate is 120 Mpa. Without reinforcing angle bars and rods, determine the thickness of the steel plate.

If the ultimate shear strength of a steel plate is 42,000 psi, what force is necessary to punch 3/4 inch diameter hole in a 5/8 inch thick plate/

What modulus of elasticity in tension is required to obtain a unit deformation of 0.00105 from a load producing a unit stress of 45,000 psi?

A sleeve bearing has an outside diameter of 38.1 mm and a length of 50.1 mm, the wall thickness is 3/16 inch. The bearing is subjected to radial load of 450 lb, determine the bearing pressure.

A 20^o involute spur gear has a tooth whole depth of 16.95 mm, a tooth thickness of 13.2 mm, and a pitch of 3. Determine the circular pitch of the gear.

A sleeve bearing has an outside diameter of 38.1 mm and a length of 50.1 mm, the wall thickness is 3/16 inch. The bearing is subjected to radial load of 450 lb, determine the bearing pressure.

What is the polar section modulus of a 4-inch solid shaft?

A 1200 mm cast iron pulley is fastened to a 112.5 mm shaft by means of a 28.13 mm square key 175 mm long. The key and the shaft have a shearing stress of 14,000 psi. Determine the force acting at the pulley rim that will shear the key.

A 20^o straight-tooth bevel pinion having 14 teeth and a diametral pitch of 6 tooth/inch drives a 42-tooth gear. The two shafts are at right angles and in the same plane. Find the pitch angle of the pinion.

A line shaft is to transmit 200 Hp at 900 rpm. Find the diameter of the shaft.

An air cylinder has a bore of 25 mm and is operated with shop air at a pressure of 90 psi. Find the push force exerted by the piston rod in N.

The root diameter of a double square thread is 0.55 inch. The screw has a pitch of 0.2 inch. Find the outside diameter and the number of threads per inch.

A roller chain and sprocket is to drive vertical discharge bucket elevator. The pitch of chain connecting sprockets is 1.75”. The sprocket is rotating at 120 rpm and has 11 teeth while the driven sprocket is rotating at 38 rpm. Determine the number of teeth of driven sprocket.

A double thread worm has a pitch diameter of 3 inches. The wheel has 20 teeth and a pitch diameter of 5 inches. Find the gear helix angle.

A 1200 mm cast iron pulley is fastened to a 112.5 mm shaft by means of a 28.13 mm square key 175 mm long. The key and the shaft have a shearing stress of 14,000 psi. Determine the force acting at the pulley rim that will shear the key.

A flywheel has a mean diameter of 4ft and is required to handle 2250 ft-lb of kinetic energy. It has a width of 8 inches, mean operating speed is 300 rpm and the coefficient of fluctuation is to be 0.05. Find the weight of rim, assuming that the arms and hub are equivalent to 10% of the total rim weight. The flywheel is made up of cast iron with specific weight of 0.26 lb per cubic inch.

A pulley 600 mm in diameter transmits 40 KW at 500 rpm. The arc of contact between the belt and pulley is 144^o , the coefficient of friction between belt and pulley is 0.35 and the safe working stress of the belt is 2.1 Mpa. Determine the belt tension ratio, neglecting the effect of centrifugal force.

A 75 mm diameter shaft is transmitting 300 KW at 600 rpm. A flange coupling is used and has 6 bolts, each 18 mm in diameter. Find the required diameter of the bolt circle based on an average shearing stress of 27.5 Mpa.

A 1.75-inch diameter shaft is supported by two sleeve bearings. The total load on the wo bearings is 2900 lb. Find the friction power loss, in Hp, if the coefficient of friction between shaft and bearing is 0.10 and the shaft rotates 200 rpm.

Determine the bursting steam pressure of a hemispherical steel shell with a diameter of 100 inches and made of 0.0635 m thick steel plate. The joint efficiency is 70% and the tensile strength is 98 psi

a 75 mm diameter shaft is transmitting 300 KW at 600 rpm. A flange coupling is used and has 6 bolts, each 18 mm in diameter. Find the required diameter if the bolt circle based on an average shearing stress of 27.5 Mpa.

A heavy duty shaft coupling is to be secured woth 25 mm bolts at a distance of 150 mm from the shaft center. The shaft transmits 4330 KW of power at a speed of 1200 rp,. If the allowable shearing stress for bolts is 100 Mpa, how many bolts are required?

What is the polar section modulus of a 4-inch solid shaft?

A 20^o involute spur gear has a tooth whole depth of 16.95 mm, a tooth thickness of 13.2 mm, and a pitch of 3. Determine the circular pitch of the gear.

An air cylinder has a bore of 25 mm and is operated with shop air at a pressure of 90 ps. Find the push force extended by the piston rod in N.

A vertical steel cylinder water tank is 30 m in diameter and 45 m high. The allowable stress of the steel plate is 120 Mpa. Without reinforcing angle bars and rods, determine the thickness of the steel plate.

Two shafts 3.6 m between centers carry pulleys 1.2 m in diameter and 0.91 m in diameter respectively, connected by a crossed belt. It is desired to put the belt on as an open belt. How long a piece must be cut of it?

A cylinder having an internal diameter of 508 mm and external diameter of 814.4 mm is subjected to an internal pressure of 69 Mpa and an external of 14 Mpa. Determine the hoop stress at the inner surface of the cylinder

A 4 inches shaft using a flat key, whose width is 1 inch, is transmitting a torque of 53,000 in-lb. If the design shearing stress is 5000 psi, determine the safe length of key.

Determine the bursting steam pressure of a hemispherical steel shell with a diameter of 100 inches and made of 0.0635 m thick steel plate. The joint efficiency is 70% and the tensile strength is 60,000 psi.

A main transmitting shaft transmits 350 KW to drive a generator at 2500 rpm, what is the required diameter of the shaft?

A 75 mm diameter shaft is transmitting 300 KW at 600 rpm. A flange coupling is used and has 6 bolts, each 18 mm in diameter. Find the required diameter of the bolt circle based on an average shearing stress of 27.5 Mpa.

A main transmitting shaft transmits 350 KW to drive a generator at 2500 rpm, what is the required diameter of the shaft?

A vertical steel cylinder water tank is 30 m in diameter and 45 m high. The allowable stress of the steel plate is 120 Mpa. Without reinforcing angle bars and rods, determine the thickness of the steel plate.

An air cylinder has a bore of 25 mm and is operated with shop air at a pressure of 90 psi. Find the push force exerted by the piston rod in N.

Two pulleys, 80 cm apart, carry a belt in an open connection. If the diameter of the pulleys are 40 cm and 15 cm, what is the length of the belt needed?

Three extension springs are hooked in parallel that support a single weight of 100 kg. The springs are rated 4 KN/m, 5 KN/m, and 6 KN/m, respectively. Determine the equivalent spring constant of the three springs.

The root diameter of a double square thread is 0.55 inch. The screw has a pitch of 0.2 inch. Find the outside diameter and the number of threads per inch.

A 4 inches shaft using a flat key, whose width is 1 inch, is transmitting a torque of 63,000 in-lb. If the design shearing stress is 5000 psi, determine the safe length of key.

Two parallel shafts connected by cylinders in pure rolling contact and turning in the same direction having a speed ratio of 2.75. Determine the center distance of the two shafts if the diameter of the smaller cylinder is 22 cm.

A flat belt is 6 inches wide and 1/3 inch thick and transmits 15 Hp. The center distance is 8 ft. The driving pulley is 6 inches in diameter and rotates at 2000 rpm such that the loose side of the belt is on top. The driven pulley is 18 inches in diameter. The belt material is 0.035 lb/in3 and the coefficient of friction is 0.30. Determine the net belt tension.

It is specified that the angular deformation in a shaft should not to exceed 1” in length of 1.8 m. The allowable shearing stress is 83 Mpa. Determine the diameter of the shaft. The shaft material has G = 77 x 10^8 Mpa.

A right-handed single-thread hardened steel worm has a catalog rating of 2.25 KW at 650 rpm when meshed with a 48-tooth cast-steel gear. The axial pitch of the worm is 25 mm, normal pressure angle is 14.5^o, and the pitch diameter of the worm is 100 mm. The coefficient of friction is 0.085. Determine the shaft center distance.

Determine the bursting steam pressure of a hemispherical steel shell with a diameter of 100 inches and made of 0.0635 m thick steel plate. The joint efficiency is 70% and the tensile strength is 98 psi.

Two pulleys, 80 cm apart, carry a belt in an open connection. If the diameter of the pulleys are 40 cm and 15 cm, what is the length of the belt needed?

A disc clutch has 6 pairs of contacting friction surfaces with an outside diameter of 200 mm and an inside diameter of 100 mm. The coefficient of friction of the clutch materials is 0.4 and the axial force is 1500 N. The shaft speed is 1200 rpm. Find the Hp that can be transmitted by the clutch assuming uniform pressure.

Determine the power capacity of a cone clutch under uniform pressure and assuming the following pressure and assuming the following conditions; major diameter = 250 mm, minor diameter = 200 mm, length of conical elements in contact-125 mm, rotating speed = 870 rpm, coefficient of friction = 0.30, and allowable pressure = 70 kpa

A parallel helical gear-set consists of a 19-tooth pinion driving a 57-tooth gear. The pinion has a left-hand helix of 20o, a normal pressure angle of 14 1/2 deg . and a normal diametral pitch of 10 tooth/inch. If the pinion is to transmit 50 Hp at a speed of 1750 rpm, determine the center distance of the two gears.

A flywheel has a mean diameter of 4ft and is required to handle 2250 ft-lb of kinetic energy. It has a width of 8 inches, mean operating speed is 300 rpm and the coefficient of fluctuation is to be 0.05. Find the weight of rim, assuming that the arms and hub are equivalent to 10% of the total rim weight. The flywheel is made up of cast iron with specific weight of 0.26 lb per cubic inch.

Determine the power capacity of a cone clutch under uniform pressure and assuming the following pressure and assuming the following conditions; major diameter = 250 mm, minor diameter = 200 mm, length of conical elements in contact-125 mm, rotating speed = 870 rpm, coefficient of friction = 0.30, and allowable pressure = 70 kpa.

A thrust washer has an inside diameter of 0.5 inch and an outside diameter of 3 inches. For an allowable bearing pressure of 90 psi, how much axial load can it sustain?

A heavy duty shaft coupling is to be secured with 25 mm bolts at a distance of 150 mm from the shaft center. The shaft transmits 4330 KW of power at a speed of 1200 rpm. If the allowable shearing stress for bolts is 100 Mpa, how many bolts are required?

A cylinder having an internal diameter of 508 mm and external diameter of 914.4 mm is subjected to an internal pressure of 69 Mpa and an external of 14 Mpa. Determine the hoop stress at the side surface of the cylinder.

A triple thread worm has a lead angle of 17^o and a pitch diameter of 2.2802 inches. Find the center distance when the worm is mated with a wheel of 48 teeth.

A right-handed single-thread hardened steel worm has a catalog rating of 2.25 KW at 650 rpm when meshed with a 48-tooth cast-steel gear. The axial pitch of the worm is 25 mm, normal pressure angle is 14.5^o, and the pitch diameter of the worm is 100 mm. The coefficient of friction is 0.085. Determine the shaft center distance.

A hollow shaft carries a torque 3.4 KN-m at a shearing stress Mpa. The outside diameter is 1.25 times that of the inside diameter. Find the inside diameter in mm.

A double thread worm has a pitch diameter of 3 inches. The wheel has 20 teeth and a pitch diameter of 5 inches. Find the gear helix angle.

A disc clutch has 6 pairs of contacting friction surfaces with an outside diameter of 200 mm and an inside diameter of 100 mm. The coefficient of friction of the clutch materials is 0.4 and the axial force is 1500 N. The shaft speed is 1200 rpm. Find the Hp that can be transmitted by the clutch assuming uniform pressure.

It is specified that the angular deformation in a shaft should not exceed 1” in length of 1.8m. The allowable shearing stress is 53 Mpa. Determine the diameter of the shaft. The shaft material has G = 77 x 10^6 Mpa.

A pulley 600 mm in diameter transmits 40 KW at 500 rpm. The arc of contact between the belt and pulley is 144o , the coefficient of friction between belt and pulley is 0.35 and the safe working stress of the belt is 2.1 Mpa. Determine the belt tension ratio, neglecting the effect of centrifugal force.

A hollow shaft carries a torque 3.4 KN-m at a shearing stress if 55 Mpa. The outside diameter is 1.25 times that of the inside diameter. Find the inside diameter in mm.

A line shaft is to transmit 200 Hp at 900 rpm. Find the diameter of the shaft.

It is specified that the angular deformation in a shaft should not to exceed 1” in length of 1.8 m. The allowable shearing stress is 83 Mpa. Determine the diameter of the shaft. The shaft material has G = 77 x 108 Mpa.

A flat belt is 6 inches wide and 1/3 inch thick and transmits 15 Hp. The center distance is 8 ft. The driving pulley is 6 inches in diameter and rotates at 2000 rpm such that the loose side of the belt is on top. The driven pulley is 18 inches in diameter. The belt material is 0.035 lb/in3 and the coefficient of friction is 0.30. Determine the net belt tension.

A 35-tooth pinion turning at 300 rpm drives a 120-tooth gear of 14.5° involute full depth pressure angle. Determine the rpm of the driven gear.

A line shaft is to transmit 200 Hp at 900 rpm. Find the diameter of the shaft.

A round steel shaft rotates at 200 rpm and is subjected to a torque of 275 N-m and a bending moment of 415 N-m. Determine the equivalent twisting moment.

What modulus of elasticity in tension is required to obtain a unit deformation of 0.00105 from a load producing a unit stress of 45,000 psi?

A thrust washer has an inside diameter of 0.5 inch and an outside diameter of 3 inches. For an allowable bearing pressure of 90 psi, how much axial load can it sustain?

A round steel shaft rotates at 200 rpm and is subjected to a torque of 275 N-m and a bending moment of 415 N-m. Determine the equivalent twisting moment.

Find the horsepower lost when a collar is loaded with 1000 lb, rotates at 25 rpm, and a coefficient of friction at 0.15. The outside diameter of the collar is 4 inches and the inside diameter is 2 inches.

Two extension coil springs are hooked in series that support a single weight of 100 kg. The first spring is rated at 4 KN/m and the other spring is rated at 6 KN/m. Determine the total deflection of the springs.

A 1.75-inch diameter shaft is supported by two sleeve bearings. The total load on the two bearings is 2800 lb. Find the friction power loss, in Hp, if the coefficient of friction between shaft and bearing is 0.10 and the shaft rotates 200rpm.

Two shafts 3.6 m between centers carry pulleys 1.2 m in diameter and 0.91 m in diameter respectively, connected by a crossed belt. It is desired to put the belt on as an open belt. How long a piece must be cut of it?

A heavy duty shaft coupling is to be secured with 25 mm bolts at a distance of 150 mm from the shaft center. The shaft transmits 4330 KW of power at a speed of 1200 rpm. If the allowable shearing stress for bolts is 100 Mpa, how many bolts are required?

A 4 inches shaft using a flat key, whose width is 1 inch, is transmitting a torque of 63,000 in-lb. If the design shearing stress is 5000 psi, determine the safe length of key.

A thrust washer has an inside diameter of 0.5 inch and an outside diameter of 3 inches. For an allowable bearing pressure of 90 psi, how much axial load can it sustain?

A main transmitting shaft transmits 350 KW to drive a generator at 2500 rpm, what is the required diameter of the shaft?

What modulus of elasticity in tension is required to obtain a unit deformation of 0.00105 from a load producing a unit stress of 45,000 psi?

A round steel shaft rotates at 200 rpm and is subjected to a torque of 275 N-m and a bending moment of 415 N-m. Determine the equivalent twisting moment.

A hollow shaft carries a torque 3.4 KN-m at a shearing stress Mpa. The outside diameter is 1.25 times that of the inside diameter. Find the inside diameter in mm.

Find the horsepower lost when a collar is loaded with 1000 lb, rotates at 25 rpm, and a coefficient of friction at 0.15. The outside diameter of the collar is 4 inches and the inside diameter is 2 inches.

A 20^o straight-tooth bevel pinion having 14 teeth and a diametral pitch of 6 tooth/inch drives a 42-tooth gear. The two shafts are at right angles and in the same plane. Find the pitch angle of the pinion.