Engineering Mechanics - Study Mode
[#66] The velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d 1 and d 2 as the diameters of larger and smaller axles respectively, is
Correct Answer
(D) $$frac{{2{ ext{D}}}}{{{{ ext{d}}_1} - {{ ext{d}}_2}}}$$
[#67] A circular hole of 50 mm diameter is cut out from a circular disc of 100 mm diameter as shown in the below figure. The center of gravity of the section will lie
Correct Answer
(A) In the shaded area
[#68] A framed structure is perfect if it contains members equal to (where, n = number of joints in a frame)
Correct Answer
(A) 2n 3
[#69] The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is
Correct Answer
(D) $$frac{{ ext{D}}}{{ ext{d}}}$$
[#70] A screw jack used for lifting the loads is
Correct Answer
(B) A non-reversible machine