1. Among the following which is the smallest unit of angle measurement ?

second

radian

minute

degree

Answer: second

Explanation:


2. The main scale of Vernier height gauge is graduated on ?

Vernier plate

base

beam

fine adjusting unit

Answer: beam

Explanation:


3. Instrument used for measuring specific gravity is called ?

hyetometer

coulombmeter

cyanometer

anemometer

Answer: anemometer

Explanation:


4. In a metric micrometer a complete revolution of thimble advances ?

0.5 mm

0.05 mm

0.01 mm

0.1 mm

Answer: 0.5 mm

Explanation:


5. On which part of the vernier bavel protector, are the main scale divisions graduated ?

disc

blade

dial

stock

Answer: disc

Explanation:


6. The value of one division on bavel edge of the thimble of a metric outside micrometer is ?

0.05 mm

0.50 mm

0.01 mm

0.10 mm

Answer: 0.01 mm

Explanation:


7. Which is the false reading measured from a 0-25 mm metric micrometer ?

20.190 mm

20.023 mm

20.210 mm

20.220 mm

Answer: 20.023 mm

Explanation:


8. The error caused due to particles of dust on the measuring face of instrument is called ___________ ?

contact error

elastic deformation error

random error

parallex error

Answer: contact error

Explanation:


9. Zero error in micrometer means ?

zero mark on the thimble is not visible

there is negligible gap between the spindle and the Anvil

zero on the thimble and datum line on sleeve do not coincide when measuring faces are in contact

micrometer is true

Answer: zero on the thimble and datum line on sleeve do not coincide when measuring faces are in contact

Explanation:


10. Which is not the use of a try square ?

setting workpiece at 90°

measuring right angle

marking straight line at 90° against an edge

checking squareness

Answer: measuring right angle

Explanation: