If the coefficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails?
A). 0.3
B). 0.26
C). 0.225
D). 0.16
2. Which of the following is a semiconductor material ?
3. Class AB operation is often used in power large signal) amplifiers in order to
6. The frequency response of transformer coupling is ___________
8. Electric field intensity is a quantity
9. In an automatic control system which of the following elements is not used ?