used machines

Machine - From times immemorial, man has used machines to help him in his work. Today, we are dependent on machine for almost every task. When we think of machines we always tend to think of big and complicated units with many moving parts like whee..

From times immemorial, man has used machines to help him in his work. Today, we are dependent on machine for almost every task. When we think of machines we always tend to think of big and complicated units with many moving parts like wheels and rollers..

Machine A can do a work in 6 hours. Machine B and C together can do the same work in 4 hours. If the three machines are being used together, how long will it take to complete the job? => 3 hours or 2 hours or 2 hours 24 minutes or 3 hours 30 minutes..

In all the above examples, a machine either multiplies or reduces the effect of the force that is applied. A bicycle is a machine which is used to gain speed. We gain speed by exerting additional force. When we try to ride a bicycle up a steep hill, we soon realize tha..

The transmission of power is made use of in hydraulic machines where a small force applied at one point is made to exert a much larger force at some other point. This principle is made use of in the working of a hydraulic press and hydraulic brake..

Machine - From times immemorial, man has used machines to help him in his work. Today, we are dependent on machine for almost every task. When we think of machines we always tend to think of big and complicated units with many moving parts like whee..

A bottling company uses a filling machine to fill plastic bottles with medicine. The bottles are supposed to contain 250 ml. In fact the contents vary according to a normal distribution with mean μ = 248 ml and standard deviation σ = 3 ml. What is the probability that t..

In the manufacture of soap, paper, viscose rayon (artificial silk), organic dyestuffs, and many other chemicals In the refining of petroleum and vegetable oils In the purification of bauxite for the extraction of aluminium As a cleansing agent and in washing powder for machines, meta..

A factory produces two types of toys A and B with the help of two machines I and II. The two machines I and II can not be used for not more than 1 1 2 hours each to manufacture the toys. The toy A requires 1 minute of machine I and 2 minutes of II, where as a..

1. Graphite is used in making the 'lead' of pencils. 2. It is used in the production of refractory crucibles, which can withstand very high temperature. 3. Graphite being a conductor of electricity finds application in making electrodes. 4. It is used in making polish..