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ICSE Class 9 Answered

if a screw moves by 1mm in 2 rotations and its circular scale has 500 dimensions, then find the pitch and LC of the screw  
Asked by ashreetsirsat98.9spicertl | 01 Jun, 2020, 08:24: PM
Expert Answer
distance travelled in 'n' rotations = 1 mm 
n rotations = 2 
 
P i t c h space equals space fraction numerator d i s tan c e space t r a v e l l e d space i n space n space r o t a t i o n s over denominator n space r o t a t i o n s space end fraction equals space fraction numerator 1 space m m over denominator 2 end fraction space equals space 0.5 space m m T h u s comma space P i t c h space o f space s c r e w space g a u g e space equals space 0.5 space m m L e a s t space c o u n t space o f space s c r e w space g a u g e comma space L C thin space equals space fraction numerator P i t c h over denominator N u m b e r space o f space d i v i s i o n s space o n space c i r c u l a r space s c a l e end fraction C i r c u l a r space s c a l e space d i v i s i o n s space equals space space 500 space... left parenthesis G i v e n space d a t a right parenthesis T h u s comma space L e a s t space c o u n t space o f space t h i s space s c r e w space g a u g e space equals space fraction numerator 0.5 space m m over denominator 500 end fraction space equals space 0.001 space m m space equals space 10 to the power of negative 4 end exponent space c m space equals space 0.0001 space c m space
Answered by Shiwani Sawant | 01 Jun, 2020, 09:23: PM

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