Theory of Machine For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve) (m.g + S₁)/(m.g + S₂) = r₁/r₂ S₂/S₁ = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ S₁/S₂ = r₁/r₂ (m.g + S₁)/(m.g + S₂) = r₁/r₂ S₂/S₁ = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ S₁/S₂ = r₁/r₂ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will Become equal to R/4 Become equal to R/2 Become equal to 2R Remain same as before Become equal to R/4 Become equal to R/2 Become equal to 2R Remain same as before ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by ω² × CN ω² × QN ω² × CO ω² × NO ω² × CN ω² × QN ω² × CO ω² × NO ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Flexible coupling is used because It prevents shock transmission and eliminates stress reversals It is easy to engage and disengage It transmits shocks gradually It is easy to disassemble It prevents shock transmission and eliminates stress reversals It is easy to engage and disengage It transmits shocks gradually It is easy to disassemble ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Hooke's joint consists of: Four forks One fork Three forks Two forks Four forks One fork Three forks Two forks ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The brake commonly used in railway trains is Band brake Shoe brake Internal expanding brake Band and block brake Band brake Shoe brake Internal expanding brake Band and block brake ANSWER DOWNLOAD EXAMIANS APP
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