Finding maximum power transmitted neglecting centrifugal tension
Below is a sample problem and its solution to find maximum power transmitted in a scenario where we need to neglect centrifugal tension.
Finding power transmitted by a belt given max tension
Below is the solution to find power transmitted by a belt given maximum permissible tension and rpm of a larger pulley –
Finding maximum power transmitted from maximum belt stress
Here is a problem involving V-belt where we calculate the maximum power transmitted from the maximum belt stress and other attributes in the system –
Finding Velocity and maximum power transmitted
Here is an interesting solution to find velocity and maximum power transmitted –
Finding Torque and power transmitted
Here is an interesting problem and solution to calculate torque and power transmitted of a shaft and pulley system. You can easily extend this to larger systems.
Finding maximum power transmitted and initial tension
Its interesting to use the mechanical formulas to find maximum power transmitted and initial tension given the characteristic features of a flat belt pulley system. Below is an example problem and its solution –
Finding power transmitted by a pulley
Here is a real life mechanical problem to solve – Two parallel shafts whose center lines are 4.8m apart are connected on an open belt drive. The diameter of the larger pullet is 1.5m and that of the smaller pulley is 1.05m. The initial tension in the belt when stationary is 3KN. The mass of…
Finding maximum cross sectional area of a Mechanical belt
Question: A leather belt transmits 30 KW from a pulley 750 mm diameter which runs at 500 rpm. The belt is in contact with the pullry over an arc of 160° and coefficient of friction, μ = 0.3. If the permissible stress in the belt is not to exceed 2 MN / m^2, find the maximum…
Finding Tight side and Slack side tension of a mechanical belt
Question: An electric motor provides 6.6 KW to a belt driven pulley 125 mm in diameter. The speed of the pulley is 1050 rpm. Calculate the tight side and slack side tension of the belt if they are in the ratio 7:2? Ans: Given: Power, P = 6.6KW Diameter, d = 125×10^-3m Speed of the pulley,…
Cut Plier – Wiring man’s freind
Schematic for mighty cut plier – Cut plier in almost indispensible for any wiring work. Pliers are used for gripping or holding small objects by manual operation. Different types of pliers are used while working electrical stuff or other kind of mechanical work. As shown above, the cut plier is used for most of the…
Using Outside Caliper – Physical data gathering
Outside caliper is a two legged precision instrument used for measuring or comparing thickness diameter and outside dimensions. The legs are tapered inwards and their ends are thin to make accurate measurement. The size of this caliper is found by taking the perpendicular distance from the center of the rivets to the leg points. If…
Using a Micrometer – Physical data gathering
Micrometer is a precision instrument which is able to take delicate measurements of all classes of materials. In the classification of sizes, what is known as a one inch micrometer will measure from 0 to 1” and a two inch make from 1” to 2” and three inch make from 2” to 3” and so…
Mechanical Information Tool – Vernier Caliper
Vernier Caliper is a precision instrument which is used to measure and record data such as length, breadth, thickness etc of a body. The principle parts are fixed jaw, movable jaw, beam or blade, fine adjustment screw and fine adjustment clamp. The graduations are marked on the beam. The beam has a fixed jaw at…
Basics of Mechanical Fitting and safety
Fitting is the assembling together of parts and removal of metals to secure necessary fit. Following safety measures need to be taken in fitting workshop – 1. Files must have well fitted handles 2. See that work piece is perfectly clamped or fixed in the vice. 3. Never use hammers with loose heads. 4. Use the…
Using a Steel Rule
Steel Rule is a measuring instrument used as a standard for measuring materials. It is made of stainless steel. The most convenient for the general purpose is a 12 inch rule as shown in below schematic – For small jobs, a pocket rule 6 inch long is very useful. In measuring, the graduation should be…
Hammers
There are various types of hammers in use. The most commonly used hand hammer is Ball-Pane hammer. Other types are Cross Pane hammer and Straight edge hammer. Schematic of a Ball pave hammer is as shown below – Hammers are made of cast steel. A wooden handle is fixed on the hammer to use it…
Pipe Wrench
Pipe Wrench is a type of adjustable spanner which has wide use in tightening or loosening nuts and taps. It has one fixed jaw and one movable jaw and a handle which is a continuation of the movable jaw. The nut or tap to be loosened or tightened is held tightly between the jaws and…
Bench Vice
Vice is a device for holding work. There are various types of vices and the most common one is the Bench Vice. It consists of a movable jaw. Movable jaw has a square or butter threaded spindle. There is a spindle handle also by which the movable jaw can be brought to any desired position. A…
How to use a File
File is another cutting tool and is available in a variety of lengths, grade cuts and shapes. Files are made of high carbon steel and is attached to a handle. The file has a series of teeth set at an angle which cut the work on the forward stroke. Files have generally 3 types of…
How to use a Hack-Saw
Hack-Saw is a cutting tool used for cutting metal pieces, wide grooves etc. It consists of a metal frame fitted with handle made of wood. A blade of suitable size is fitted to the frame as shown below – Usually the blade manufactured are 8inch, 10inch and 12inch, The blade has bent teeth. As the…
How to use a Centre Punch?
Centre Punch is the commonest of all punches and is a steel rod 90 – 150 mm long and 8 – 13 mm in diameter. It is used to make marls at the centers of holes which are to be drilled and to make marks on a line through which a metal is to be…
Try Square
Try Square is used to test the smoothness of surfaces and to test the perpendicularity of a surface with respect to an adjacent one. It consists of a stock and blade fixed together at 90 degree to each other. The stock acts as a fence and the blade as a guide in marking.