GATE (TF) Textile 2020 Question Paper Solution | GATE/2020/TF/52

Question 52 (Textile Engineering & Fibre Science)

The ‘standard machine rate of loading’ of a tensile tester, working on pendulum lever principle, is 440 N/cm. As the pendulum lever swings from 30o to 45o, the ‘machine rate of loading’ (N/cm), reduces by (rounded off to 2 decimal places) __69.00 to 71.00__.

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Given in the question:
Standard machine rate of loading(\mu_{o})=440 N/cm

Pendulum lever swings from, \theta_1=30o to \theta_2=45o

The machine rate of loading(\mu)=?


\mu=\mu_{o} Cos(\theta_1)-Cos(\theta_2)

\mu=440 *(Cos30o-Cos45o)

\mu=440 *(0.87-0.71)

\mu=440 *0.16

\mu=70.4 N/cm (Answer)

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