Question:-
Consider the following statements:
Assertion (A): Shafts supporting helical gears must have only deep groove ball-bearings.
Reason (R): Helical gears produce axial thrusts.
Option (A)
Both A and R are individually true and R is the correct explanation of A
Option (B)
Both A and R are individually true but R is not the correct explanation A
Option(C)
A is true but R is false
Option(D)
A is false but R is true
Correct Option:
(A)
Question Solution:
Helical gears has three force component Ft, Fr, F1 (Tangential, radial and axial) so deep groove ball bearing must be used as it can take radial and thrust force simultaneously.
question-answer-faq-9261