1 Among the three types of friction which type is governed b

1) Among the three types of friction, which type is governed by a linear mathematical relation?

2) Given a two-gear system with angular displacement t1 and t2, numbers of teeth N1 and N2, and torques T1 and T2, write the mathematical relations between these variables and parameters.

3) How are potentiometers used in control systems?

clear hand writing please

Solution

1.static,kinetic and fluid frictions are represented by linear mathematical relation.

2.N1/N2=T2/T1=t1/t2

3. potentiometers are used in positional control systems,used as error detectors for comparing two variables or one variable with reference value, used in servomechanisms