16.Pick up the appropriate word for A reading obtained from the motion of a pointer on a scale :

17.Determining moisture in steam by measuring the temperature in a throttling calorimeter is an example of :

18.The closeness with which the reading of an instrument approaches the true value of the variable being measured is called :

19.The ratio of output signal or response of the instrument'" to a change in input or measured variable is called :

20.Which of the following is used to count the number of brass items passing on a conveyor line, when no contact is permitted with the object: