haust fan fitted with 900 mm diameter pulley is driven by a flat belt from a 30 kW, 950 r.p.m. squirrel cage motor. The pulley on the motor shaft is 250 mm in diameter and the centre distance between the fan and motor is 2.25 m. The belt is 100 mm wide with a coefficient of friction of 0.25. If the allowable stress in the belt material is not to exceed 2 MPa, determine the necessary thickness of the belt and its total length. Take centrifugal force effect into consideration for density of belt being 950 kg/

Q: (9) A single thread trapezoidal metric thread has a pitch of 4mm &has a mean diameter of 18mm. It is…

A: Given data: p=4 mmd=18 mmdo=37 mmdi=27 mmm=400 kgμ=0.3 Need to determine the required torque.

Q: A single-threaded power screw of square form is to raise a load of 90KN at the rate of 360mm/min.…

A: The given information in the problem are shown in the following attached image:

Q: A power screw has single square threads. It has a major diameter of 38 The coefficient of friction…

A: Given data: Major diamter, d0 = 36 mm pitch (p) = 6 mm co-efficient of friction for the threads =…

Q: (5) A 2½-in square thread steel screw is used in a common jack screw. There are 214TPI. The body of…

A: Answer: (a) The efficiency of the screw only: 27.16% (b) The efficiency of the screw & the…

Q: pitch, the torque required for achieving the tightening force is

A: Given data; tightening force=2200 N Pitch=0.004 m

Q: (b) An automotive clutch driven plate is clamped between a fly- wheel and a sprung pressure plate.…

A: Friction Clutches : Friction clutches are mechanical devices which are used to transmit power from…

Q: A cylindrical pressure vessel with a diameter of 600 mm is to be fabricated from steel plates of…

A:

Q: An ACME-thread power screw is considered. The coefficient of friction of the thread is mu. The…

A: Given: The major diameter, d = 1.75 in The screw lead, l = 0.25 in The coefficient of friction, µ =…

Q: In a flange coupling as shown each shaft is keyed to the both of a flange with a sunk key to…

A:

Q: 4. Determine the efficiency of the riveted butt joint with 20 mm main plate, 12 mm cover plates and…

A: We have to determine efficiency of riveted butt joint

Q: A double-threaded power screw is used to raise a load of 5 kN. The nominal diameter is 60 mm and…

A:

Q: (11) Find the power required to drive a power screw lifting a load of 40001b. A 2½-in double square…

A:

Q: A conical pivot with angle of cone as 100° supports a load of 18 kN. The external radius is 2.5…

A:

Q: (2) A single square thread jackscrew has 2.0TPI. It is to lift 15 tons. The friction radius of the…

A: Given data Thread : Single square thread with 2 Threads per square inch.   Friction radius of the…

Q: on c is 0, what is th

A:

Q: M8x1 SAE 9.8 Bolts A B C P 100 D E F. 150 H I 100 100--100-80 400 A bracket is bolted onto a channel…

A: Given Bolt diameter = 8 mm To find Maximum load For bolt A, C, G, I For all the bolts Verify does…

Q: OA double-threaded ACME screw, with a major diameter of 40 mm and a pitch of 4 mm, is used to lift a…

A: The power screw in this application exhibits self-locking behavior due to the lead angle (3.82°)…

Q: 1. A single-threaded 25-mm power screw is 25-mm in diameter with a pitch of 5mm. A vertical load on…

A:

Q: A trapezoidal-threaded power screw with a crest diam- eter of 30 mm and single thread is used to…

A: Given : crest diameter, dc = 30 mm  load, W = 50 KN collar mean diameter, D = 40 mm  coefficient of…

Q: 5. Design a compression coupling for a shaft to transmit 1300 N-m. The allowable shear stress for…

A:

Q: ghtening force of 2200 N. If the bolt used has metric threads of 4 mm pitch, the torque requi

A: given:tightening force =2200NPitch=4mm

Q: Q.1 Design a compression coupling for a shaft to transmit 2000 N-m. The allowable shear stress for…

A: Answer: Given, T = 2000Nam = 2000 x 103 N - mm         τ= 50 MPa  σ t = 90MPa   No ,of bohts , N = 6…

Q: You have to build a box lifter, this will be made with a square threaded power screw. The power…

A:

Q: Q1) The V thread of a screw jack has a single start with out side diameter 40 mm and 6 mm pitch. The…

A: There are two types of forces that are acting on a circular surface. One type of force is Radial…

Q: In the figure below the clamping force on the pipe is (331.7 lb), knowing that a single threaded…

A: P =331.7lb D=1 inch coefficient of friction (K) =0.2135 for 1030 hot rolled carbon steel tensile…

Q: An automobile single plate ciutch consists of a pair of contacting surtaces. The inneOr and outer…

A:

Q: The following data relate to a screw jack: Pitch of the threaded screw = 8 mm Diameter of the…

A:

Q: Two identical 4 in. major-diameter power screws (single-thread) with modified square threads are…

A: Given:f = 0.1fc = 0.24v = 3ft/min = 36 in /minTo find:Power required to drive each screw when the…

Q: Design a turnbuckle subjected to a load of 50 kN with permissible stresses are in 166.67 Mpa in…

A: Given Data P=50kN σt=166.67MPaτ=83.33MPaσc=166.67MPa

Q: The outside diameter of the coils of a safety valve spring is 120 mm while its wire diameter is 15…

A: Given Data The outside diameter of the coil is:D=120 mm The wire diameter is:d=15 mm The number of…

Q: esign a clamp coupling to transmit ‘35’ kW at ‘120’ r.p.m. The allowable shear stress for the shaft…

A: GivenPower P=35kWN=120rpmτshaft=τkey=50MPanumber of bolts n=6The permissible tensile stress for the…

Q: A circular bar is to carry a fluctuating torque from 25 to 55 N-m. Use AISI C1144 OQT 1000 for the…

A: Given: Torque, T=25 to 55 N-m Factor of safety, n=2 Stress concentration factor, kf=2.5 To find:…

Q: Q2) design a nut, and screw jack (normal series) manufactured from a high grad materials and…

A:

Q: What weight (kg) can be lifted by a double threaded screw that has an efficiency of 85% if it is…

A: Given, No. of threads in one lead = n =2 (For double threaded screw)Efficiency = η = 0.85Applied…

Q: The clutch of a motor car is required to transmit 9 kW at 3500 rpm. It is of single-plate type, with…

A: Given: The power of the motor is 9 kW. The coefficient of friction is 0.25. The maximum pressure is…

Q: Design and draw a protective type of cast iror flange coupling for a steel shaft transmitting ? kW…

A: Machine Design

Q: 2. A cylinder with a nominal 2.5 inch ID, a 4.0 inch OD, and a 3.0 inch length is to be mated with a…

A: To calculate the maximum amount of torque transmission and to determine the yield condition of a…

Q: 4 dia 16 R. 3. The grip strengthener shown in Fig. 1 is composed of a helical spring made of 4 mm…

A: Given: Diameter, dw=4 mmouter diameter, OD=32 mmnumber of turns, Nb=3.5design factor, ns=Syσs=1.1

Q: rpm. contact between the belt and pulley is 144°, the coefficient of friction between belt and…

A:

Q: Q1. Design and draw a protective type of cast iron flange coupling for a steel shaft transmitting 28…

A:

Q: Q4. Two plates have a length (L) and thickness (t), were welded together. Assume these plates have…

A: Q4: Weld joint: A weld joint is a joint which is used to join two or more plates by adding a fusion…

Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.