MEASUREMENT and METROLOGY Set 1

allow measurements to be made ✘ transmit the information ✘ change signals ✘ any of the above. ✔

primary signal ✘ measured variable ✘ output ✘ all of the above. ✔

is an act of comparison of an unknown quantity with another quantity ✘ is an act of comparison of an unknown quantity with a known quantity whose accuracy may be known or may not be known ✘ is an act of comparison of an unknown quantity with a predefined acceptable standard which is accurately known ✘ none of the above ✔

direct methods are commonly used ✘ one of direst methods is limited but indirect methods are commonly used ✘ both direct and indirect methods are commonly used ✘ all of the above ✔

output ✘ measured variable ✘ secondary signal ✘ any of the above ✔

primary measurement ✘ secondary measurement ✘ tertiary measurement ✘ any one of above ✔

change the quantity under measurement to an analog signal ✘ change the magnitude of the input signal while retaining its identity ✘ to perform non-linear operation like filtering, chopping and clipping and clamping ✘ non of thee abovee ✔

sense the primary (input) signal ✘ indicate and record the measurement ✘ amplify and transmit the secondary signal ✘ any of thee above ✔

precision ✘ accuracy ✘ least count ✘ error ✔

precision of instrument ✘ precision of method ✘ good planning ✘ all of the above ✔