Metrology 1 sem

Metrology is a branch of science which deals with ___.

• Medical applications
• Aeronautical Applications
• Measurements
• None

SI system established in _________ by the general conference of weights and measures

• 1960
• 1958
• 1968
• None

Least count of Vernier micrometer

• 0.01
• 0.001
• 0.02
• 0.1

Least count of Vernier if vsd 49/50

• 0.02
• 0.05
• 0.5
• 0.002

Least count of steel rule

• 0.05
• 0.5
• 0.02
• 0.1

Non precision instrument

• steel rule
• vernier caliper
• micrometer
• caliper

Vernier caliper works under the principle of _______

• difference in scales
• Option in scale
• Screw and nut
• Sliding scale

Steel tapes are made of ______

• Spring steel
• mild steel
• copper
• carbon steel

SI symbol m is the prefix for ________.

• nano
• milli
• Micro
• mm

Ratchet stop of a micrometer is used to give __________.

• Lock the movement
• Protect the spindle
• Uniform measuring pressure
• Protect the themble