What is a least square line?
A. A line which has sum of errors minimum
B. A line which has sum of difference of errors minimum
C. A line which has sum of squares of errors minimum
D. None of the above
The study of scientific metrology deals with
A. accuracy and methods of measurement
B. standard specifications
C. theories related to nature
D. all of the above
Which of the following processes is used to monitor space signals of a space craft?
A. Stroboscope
B. Telemetry
C. Pyrometer
D. None of the above
Which of the following is not a type of direct measuring instrument?
A. micrometer
B. vernier caliper
C. divider
D. All of the above
Johansson mickrocator is a type of
A. mechanical optical comparator
B. mechanical comparator
C. optical comparator
D. electrical comparator
A. 1 and 2
B. 3 and 4
C. 1 and 3
D. All of the above