M1 Metrology

What is the principle of the "the johnson mikrokator"___________

• button spinning on the loop of string
• button spinning above the loop of string
• button spinning below the loop of string
• none of the above

From which category "sigma comparator" belongs___________

• Electrical comparators
• Pneumatic Comparators
• mechanical comparator
• none of the above

Which type of comparator uses the friction less reed mechanism for magnifying small motion of spindle___________

• reed type
• Pneumatic Comparators
• Johansson Mikrokator
• Electrical comparators

What is the range of mechanical amplification in reed type comparator___________

• from 500 to 1000
• from 300 to 500
• from 500 to 800
• none of the above

What is the advantage of mechanical comparator over other ___________

• no need of external supply
• Cheaper and portable
• Robust construction and compact design
• all of these

In which principle does mechanical optical comparator works___________

• AC Wheat stone Bridge
• fundamental optical law
• reed type comparator
• none of the above

Which comparators has high range and no parallax___________

• mechanical optical comparator
• pneumatics comparators
• Johansson Mikrokator
• Sigma Comparator

Which comparator works on the principle that depends upon an AC wheatstone bridge circuit ___________

• electrical comaprators
• pneumatics comparators
• mechanical comparator
• Sigma Comparator

Which comparator is used for very high magnification ___________

• electrical comaprators
• pneumatics comparators
• mechanical comparator
• Sigma Comparator

Characteristics of comparators___________

• Robust design and construction
• High magnification
• Quick in results
• all of these