Question

As per BIS, for safe use of threshers

(A) The minimum length of feeding chute should be 90 cm.
(B) The feeding chute should be covered up to a minimum length of 45 cm.
(C) The feeding chute should be inclined to the horizontal at an angle of 5-10 degree.
(D) The feeding chute should be made of stainless steel.
(E) The feeding chute should have an alarming system.

Choose the correct answer from the options given below:

• A. (A), (B) and (C) only.
• B. (B), (C) and (D) only.
• C. (B), (D) and (E) only.
• D. (A), (B) and (E) only.

Hint:

Focus on what actually protects an operator's hand: chute length, guarding, and a warning signal, not the material or the tilt angle.

Answer 1

The Correct Option is D

Every genuine safety requirement in the BIS thresher code exists to stop a hand from reaching the spinning cylinder while feeding crop material.

A long feeding chute, at least 90 cm, physically keeps the feeding hand far from the cylinder. Covering at least 45 cm of that chute blocks fingers from slipping down into the moving mechanism. An alarm system warns anyone nearby that the machine is running and dangerous. All three of these directly reduce the chance of an injury.

A fixed tilt angle or a specific metal like stainless steel does not, by itself, make the chute safer, these are manufacturing or design choices rather than protective safety features, so they are not part of the mandated safety list.

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