Set 4 Practice Mode

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Q7926
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Calculate the rpm for drilling a hole of dia meter 16 mm on cast iron with a cutting speed 30 m / minute?
Q7927
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What is the function of thumb lever of vernier caliper?
Q7928
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Why the extreme care should be taken while handling vernier calliper?
Q7929
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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?
Q7930
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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?