Engineering Metrology- Quiz No-1

What is bilateral tolerance?

• Total tolerance is in 1 direction only

• Total tolerance is in both the directions

• May or may not be in one direction

• Tolerance provided all over the component body

Has to ensure the adequate function of measurement instruments used in industry as well as production and testing process.

• · Scientific Metrology

• · Industrial Metrology

• · Legal Metrology

• · Fundamental Metrology

It is the susceptibility of a measurement device to have its indicators converted into meaningful numbers.

• · Readability

• · Precision

• · Inspection

• · Error

Sine bar is used to measure an angle upto.......... degrees.

• 30

• 45

• 60

• 90

Which of the following causes is/are responsible for systematic errors?

• non linearity

• change in sensitivity

• zero offset

• All of the above

In which of the following length standards, parallax error is observed?

• line standard

• end standard

• both a & b

• none of the above

Which of the following is a characteristic of End standard?

• accuracy of ± 0.2 mm

• accuracy of ± 0.050 mm

• accuracy of ± 0.001 mm

• accuracy of ± 1.00 mm

From which category, sigma comparator belongs?

• Optical comparator

• mechanical comparator

• mechanical-optical comparator

• electric comparator

What is the advantage of mechanical comparator over others?

• Less moving parts

• No need of external supply

• No error due to parallax

• Large range of instrument

Which of the following is not correct about wavelength standard?

• Wavelength of monochromatic light is an invariable unit of length

• Wavelength standard is a physical standard

• It is a reproducible standard

• It is a natural unit of length