BASIC FITTING 3 FITTINGS - Practice Mode

1) Calculate the rpm for drilling a hole of dia meter 16 mm on cast iron with a cutting speed 30 m / minute?

497 rpm 597 rpm 697 rpm 797 rpm

Correct Answer: 597 rpm

2) What is the function of thumb lever of vernier caliper?

For getting least count To take internal measurement To take external measurement To set vernier slide at any position

Correct Answer: To set vernier slide at any position

3) Why the extreme care should be taken while handling vernier calliper?

Measuring instrument Indirect measuring instrument Precision instrument Semi precision instrument

Correct Answer: Precision instrument

4) What is the least count in a vernier caliper if 9 main scale divisions (9mm) are divided in to 10 equal parts in the vernier scale?

0.02 mm 0.05 mm 0.10 mm 0.20 mm

Correct Answer: 0.10 mm

5) What is the least count of a vernier caliper if 19 main scale divisions (19 mm) are divided into 20 equal parts in the vernier scale?

0.01 mm 0.02 mm 0.05 mm 0.10 mm

Correct Answer: 0.05 mm

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